#include "blas_extended.h"
#include "blas_extended_private.h"
void BLAS_chemv_x(enum blas_order_type order, enum blas_uplo_type uplo,
		  int n, const void *alpha, const void *a, int lda,
		  const void *x, int incx, const void *beta,
		  void *y, int incy, enum blas_prec_type prec)

/* 
 * Purpose
 * =======
 *
 * This routines computes the matrix product:
 *
 *     y  <-  alpha * A * x  +  beta * y
 * 
 * where A is a Hermitian matrix.
 *
 * Arguments
 * =========
 *
 * order   (input) enum blas_order_type
 *         Storage format of input hermitian matrix A.
 * 
 * uplo    (input) enum blas_uplo_type
 *         Determines which half of matrix A (upper or lower triangle)
 *         is accessed.
 *
 * n       (input) int
 *         Dimension of A and size of vectors x, y.
 *
 * alpha   (input) const void*
 * 
 * a       (input) void*
 *         Matrix A.
 *
 * lda     (input) int
 *         Leading dimension of matrix A.
 *
 * x       (input) void*
 *         Vector x.
 *   
 * incx    (input) int
 *         Stride for vector x.
 *
 * beta    (input) const void*
 * 
 * y       (input/output) void*
 *         Vector y.
 *
 * incy    (input) int
 *         Stride for vector y. 
 *
 * prec   (input) enum blas_prec_type
 *        Specifies the internal precision to be used.
 *        = blas_prec_single: single precision.
 *        = blas_prec_double: double precision.
 *        = blas_prec_extra : anything at least 1.5 times as accurate
 *                            than double, and wider than 80-bits.
 *                            We use double-double in our implementation.
 *
 */
{
  /* Routine name */
  static const char routine_name[] = "BLAS_chemv";
  switch (prec) {

  case blas_prec_single:{

      /* Integer Index Variables */
      int i, k;

      int xi, yi;
      int aik, astarti, x_starti, y_starti;

      int incai;
      int incaik, incaik2;

      int n_i;

      /* Input Matrices */
      const float *a_i = (float *) a;
      const float *x_i = (float *) x;

      /* Output Vector */
      float *y_i = (float *) y;

      /* Input Scalars */
      float *alpha_i = (float *) alpha;
      float *beta_i = (float *) beta;

      /* Temporary Floating-Point Variables */
      float a_elem[2];
      float x_elem[2];
      float y_elem[2];
      float prod[2];
      float sum[2];
      float tmp1[2];
      float tmp2[2];



      /* Test for no-op */
      if (n <= 0) {
	return;
      }
      if (alpha_i[0] == 0.0 && alpha_i[1] == 0.0
	  && (beta_i[0] == 1.0 && beta_i[1] == 0.0)) {
	return;
      }

      /* Check for error conditions. */
      if (order != blas_colmajor && order != blas_rowmajor) {
	BLAS_error(routine_name, -1, order, NULL);
      }
      if (uplo != blas_upper && uplo != blas_lower) {
	BLAS_error(routine_name, -2, uplo, NULL);
      }
      if (lda < n) {
	BLAS_error(routine_name, -3, n, NULL);
      }
      if (incx == 0) {
	BLAS_error(routine_name, -8, incx, NULL);
      }
      if (incy == 0) {
	BLAS_error(routine_name, -11, incy, NULL);
      }

      /* Set Index Parameters */
      n_i = n;

      if ((order == blas_colmajor && uplo == blas_upper) ||
	  (order == blas_rowmajor && uplo == blas_lower)) {
	incai = lda;
	incaik = 1;
	incaik2 = lda;
      } else {
	incai = 1;
	incaik = lda;
	incaik2 = 1;
      }
      /* Adjustment to increments (if any) */
      incx *= 2;
      incy *= 2;
      incai *= 2;
      incaik *= 2;
      incaik2 *= 2;
      if (incx < 0) {
	x_starti = (-n_i + 1) * incx;
      } else {
	x_starti = 0;
      }
      if (incy < 0) {
	y_starti = (-n_i + 1) * incy;
      } else {
	y_starti = 0;
      }



      /* alpha = 0.  In this case, just return beta * y */
      if (alpha_i[0] == 0.0 && alpha_i[1] == 0.0) {
	for (i = 0, yi = y_starti; i < n_i; i++, yi += incy) {
	  y_elem[0] = y_i[yi];
	  y_elem[1] = y_i[yi + 1];
	  {
	    tmp1[0] = y_elem[0] * beta_i[0] - y_elem[1] * beta_i[1];
	    tmp1[1] = y_elem[0] * beta_i[1] + y_elem[1] * beta_i[0];
	  }

	  y_i[yi] = tmp1[0];
	  y_i[yi + 1] = tmp1[1];
	}
      } else {
	/*  determine whether we conjugate in first loop or second loop */

	if (uplo == blas_lower) {
	  /*  conjugate second */

	  /* Case alpha == 1. */
	  if ((alpha_i[0] == 1.0 && alpha_i[1] == 0.0)) {

	    if (beta_i[0] == 0.0 && beta_i[1] == 0.0) {
	      /* Case alpha = 1, beta = 0.  We compute  y <--- A * x */
	      for (i = 0, yi = y_starti, astarti = 0;
		   i < n_i; i++, yi += incy, astarti += incaik2) {
		sum[0] = sum[1] = 0.0;
		for (k = 0, aik = astarti, xi = x_starti;
		     k < i; k++, aik += incaik, xi += incx) {
		  a_elem[0] = a_i[aik];
		  a_elem[1] = a_i[aik + 1];

		  x_elem[0] = x_i[xi];
		  x_elem[1] = x_i[xi + 1];
		  {
		    prod[0] = a_elem[0] * x_elem[0] - a_elem[1] * x_elem[1];
		    prod[1] = a_elem[0] * x_elem[1] + a_elem[1] * x_elem[0];
		  }

		  sum[0] = sum[0] + prod[0];
		  sum[1] = sum[1] + prod[1];
		}
		a_elem[0] = a_i[aik];
		x_elem[0] = x_i[xi];
		x_elem[1] = x_i[xi + 1];
		{
		  prod[0] = x_elem[0] * a_elem[0];
		  prod[1] = x_elem[1] * a_elem[0];
		}
		sum[0] = sum[0] + prod[0];
		sum[1] = sum[1] + prod[1];
		k++;
		aik += incaik2;
		xi += incx;
		for (; k < n_i; k++, aik += incaik2, xi += incx) {
		  a_elem[0] = a_i[aik];
		  a_elem[1] = a_i[aik + 1];
		  a_elem[1] = -a_elem[1];
		  x_elem[0] = x_i[xi];
		  x_elem[1] = x_i[xi + 1];
		  {
		    prod[0] = a_elem[0] * x_elem[0] - a_elem[1] * x_elem[1];
		    prod[1] = a_elem[0] * x_elem[1] + a_elem[1] * x_elem[0];
		  }

		  sum[0] = sum[0] + prod[0];
		  sum[1] = sum[1] + prod[1];
		}
		y_i[yi] = sum[0];
		y_i[yi + 1] = sum[1];
	      }
	    } else {
	      /* Case alpha = 1, but beta != 0. 
	         We compute  y  <--- A * x + beta * y */
	      for (i = 0, yi = y_starti, astarti = 0;
		   i < n_i; i++, yi += incy, astarti += incaik2) {
		sum[0] = sum[1] = 0.0;

		for (k = 0, aik = astarti, xi = x_starti;
		     k < i; k++, aik += incaik, xi += incx) {
		  a_elem[0] = a_i[aik];
		  a_elem[1] = a_i[aik + 1];

		  x_elem[0] = x_i[xi];
		  x_elem[1] = x_i[xi + 1];
		  {
		    prod[0] = a_elem[0] * x_elem[0] - a_elem[1] * x_elem[1];
		    prod[1] = a_elem[0] * x_elem[1] + a_elem[1] * x_elem[0];
		  }

		  sum[0] = sum[0] + prod[0];
		  sum[1] = sum[1] + prod[1];
		}
		a_elem[0] = a_i[aik];
		x_elem[0] = x_i[xi];
		x_elem[1] = x_i[xi + 1];
		{
		  prod[0] = x_elem[0] * a_elem[0];
		  prod[1] = x_elem[1] * a_elem[0];
		}
		sum[0] = sum[0] + prod[0];
		sum[1] = sum[1] + prod[1];
		k++;
		aik += incaik2;
		xi += incx;
		for (; k < n_i; k++, aik += incaik2, xi += incx) {
		  a_elem[0] = a_i[aik];
		  a_elem[1] = a_i[aik + 1];
		  a_elem[1] = -a_elem[1];
		  x_elem[0] = x_i[xi];
		  x_elem[1] = x_i[xi + 1];
		  {
		    prod[0] = a_elem[0] * x_elem[0] - a_elem[1] * x_elem[1];
		    prod[1] = a_elem[0] * x_elem[1] + a_elem[1] * x_elem[0];
		  }

		  sum[0] = sum[0] + prod[0];
		  sum[1] = sum[1] + prod[1];
		}
		y_elem[0] = y_i[yi];
		y_elem[1] = y_i[yi + 1];
		{
		  tmp2[0] = y_elem[0] * beta_i[0] - y_elem[1] * beta_i[1];
		  tmp2[1] = y_elem[0] * beta_i[1] + y_elem[1] * beta_i[0];
		}

		tmp1[0] = sum[0];
		tmp1[1] = sum[1];
		tmp1[0] = tmp2[0] + tmp1[0];
		tmp1[1] = tmp2[1] + tmp1[1];
		y_i[yi] = tmp1[0];
		y_i[yi + 1] = tmp1[1];
	      }
	    }
	  } else {
	    /* The most general form,   y <--- alpha * A * x + beta * y */
	    for (i = 0, yi = y_starti, astarti = 0;
		 i < n_i; i++, yi += incy, astarti += incaik2) {
	      sum[0] = sum[1] = 0.0;

	      for (k = 0, aik = astarti, xi = x_starti;
		   k < i; k++, aik += incaik, xi += incx) {
		a_elem[0] = a_i[aik];
		a_elem[1] = a_i[aik + 1];

		x_elem[0] = x_i[xi];
		x_elem[1] = x_i[xi + 1];
		{
		  prod[0] = a_elem[0] * x_elem[0] - a_elem[1] * x_elem[1];
		  prod[1] = a_elem[0] * x_elem[1] + a_elem[1] * x_elem[0];
		}

		sum[0] = sum[0] + prod[0];
		sum[1] = sum[1] + prod[1];
	      }
	      a_elem[0] = a_i[aik];
	      x_elem[0] = x_i[xi];
	      x_elem[1] = x_i[xi + 1];
	      {
		prod[0] = x_elem[0] * a_elem[0];
		prod[1] = x_elem[1] * a_elem[0];
	      }
	      sum[0] = sum[0] + prod[0];
	      sum[1] = sum[1] + prod[1];
	      k++;
	      aik += incaik2;
	      xi += incx;
	      for (; k < n_i; k++, aik += incaik2, xi += incx) {
		a_elem[0] = a_i[aik];
		a_elem[1] = a_i[aik + 1];
		a_elem[1] = -a_elem[1];
		x_elem[0] = x_i[xi];
		x_elem[1] = x_i[xi + 1];
		{
		  prod[0] = a_elem[0] * x_elem[0] - a_elem[1] * x_elem[1];
		  prod[1] = a_elem[0] * x_elem[1] + a_elem[1] * x_elem[0];
		}

		sum[0] = sum[0] + prod[0];
		sum[1] = sum[1] + prod[1];
	      }
	      y_elem[0] = y_i[yi];
	      y_elem[1] = y_i[yi + 1];
	      {
		tmp2[0] = y_elem[0] * beta_i[0] - y_elem[1] * beta_i[1];
		tmp2[1] = y_elem[0] * beta_i[1] + y_elem[1] * beta_i[0];
	      }

	      {
		tmp1[0] = sum[0] * alpha_i[0] - sum[1] * alpha_i[1];
		tmp1[1] = sum[0] * alpha_i[1] + sum[1] * alpha_i[0];
	      }

	      tmp1[0] = tmp2[0] + tmp1[0];
	      tmp1[1] = tmp2[1] + tmp1[1];
	      y_i[yi] = tmp1[0];
	      y_i[yi + 1] = tmp1[1];
	    }
	  }
	} else {
	  /*  conjugate first loop */

	  /* Case alpha == 1. */
	  if ((alpha_i[0] == 1.0 && alpha_i[1] == 0.0)) {

	    if (beta_i[0] == 0.0 && beta_i[1] == 0.0) {
	      /* Case alpha = 1, beta = 0.  We compute  y <--- A * x */
	      for (i = 0, yi = y_starti, astarti = 0;
		   i < n_i; i++, yi += incy, astarti += incaik2) {
		sum[0] = sum[1] = 0.0;
		for (k = 0, aik = astarti, xi = x_starti;
		     k < i; k++, aik += incaik, xi += incx) {
		  a_elem[0] = a_i[aik];
		  a_elem[1] = a_i[aik + 1];
		  a_elem[1] = -a_elem[1];
		  x_elem[0] = x_i[xi];
		  x_elem[1] = x_i[xi + 1];
		  {
		    prod[0] = a_elem[0] * x_elem[0] - a_elem[1] * x_elem[1];
		    prod[1] = a_elem[0] * x_elem[1] + a_elem[1] * x_elem[0];
		  }

		  sum[0] = sum[0] + prod[0];
		  sum[1] = sum[1] + prod[1];
		}
		a_elem[0] = a_i[aik];
		x_elem[0] = x_i[xi];
		x_elem[1] = x_i[xi + 1];
		{
		  prod[0] = x_elem[0] * a_elem[0];
		  prod[1] = x_elem[1] * a_elem[0];
		}
		sum[0] = sum[0] + prod[0];
		sum[1] = sum[1] + prod[1];
		k++;
		aik += incaik2;
		xi += incx;
		for (; k < n_i; k++, aik += incaik2, xi += incx) {
		  a_elem[0] = a_i[aik];
		  a_elem[1] = a_i[aik + 1];

		  x_elem[0] = x_i[xi];
		  x_elem[1] = x_i[xi + 1];
		  {
		    prod[0] = a_elem[0] * x_elem[0] - a_elem[1] * x_elem[1];
		    prod[1] = a_elem[0] * x_elem[1] + a_elem[1] * x_elem[0];
		  }

		  sum[0] = sum[0] + prod[0];
		  sum[1] = sum[1] + prod[1];
		}
		y_i[yi] = sum[0];
		y_i[yi + 1] = sum[1];
	      }
	    } else {
	      /* Case alpha = 1, but beta != 0. 
	         We compute  y  <--- A * x + beta * y */
	      for (i = 0, yi = y_starti, astarti = 0;
		   i < n_i; i++, yi += incy, astarti += incaik2) {
		sum[0] = sum[1] = 0.0;

		for (k = 0, aik = astarti, xi = x_starti;
		     k < i; k++, aik += incaik, xi += incx) {
		  a_elem[0] = a_i[aik];
		  a_elem[1] = a_i[aik + 1];
		  a_elem[1] = -a_elem[1];
		  x_elem[0] = x_i[xi];
		  x_elem[1] = x_i[xi + 1];
		  {
		    prod[0] = a_elem[0] * x_elem[0] - a_elem[1] * x_elem[1];
		    prod[1] = a_elem[0] * x_elem[1] + a_elem[1] * x_elem[0];
		  }

		  sum[0] = sum[0] + prod[0];
		  sum[1] = sum[1] + prod[1];
		}
		a_elem[0] = a_i[aik];
		x_elem[0] = x_i[xi];
		x_elem[1] = x_i[xi + 1];
		{
		  prod[0] = x_elem[0] * a_elem[0];
		  prod[1] = x_elem[1] * a_elem[0];
		}
		sum[0] = sum[0] + prod[0];
		sum[1] = sum[1] + prod[1];
		k++;
		aik += incaik2;
		xi += incx;
		for (; k < n_i; k++, aik += incaik2, xi += incx) {
		  a_elem[0] = a_i[aik];
		  a_elem[1] = a_i[aik + 1];

		  x_elem[0] = x_i[xi];
		  x_elem[1] = x_i[xi + 1];
		  {
		    prod[0] = a_elem[0] * x_elem[0] - a_elem[1] * x_elem[1];
		    prod[1] = a_elem[0] * x_elem[1] + a_elem[1] * x_elem[0];
		  }

		  sum[0] = sum[0] + prod[0];
		  sum[1] = sum[1] + prod[1];
		}
		y_elem[0] = y_i[yi];
		y_elem[1] = y_i[yi + 1];
		{
		  tmp2[0] = y_elem[0] * beta_i[0] - y_elem[1] * beta_i[1];
		  tmp2[1] = y_elem[0] * beta_i[1] + y_elem[1] * beta_i[0];
		}

		tmp1[0] = sum[0];
		tmp1[1] = sum[1];
		tmp1[0] = tmp2[0] + tmp1[0];
		tmp1[1] = tmp2[1] + tmp1[1];
		y_i[yi] = tmp1[0];
		y_i[yi + 1] = tmp1[1];
	      }
	    }
	  } else {
	    /* The most general form,   y <--- alpha * A * x + beta * y */
	    for (i = 0, yi = y_starti, astarti = 0;
		 i < n_i; i++, yi += incy, astarti += incaik2) {
	      sum[0] = sum[1] = 0.0;

	      for (k = 0, aik = astarti, xi = x_starti;
		   k < i; k++, aik += incaik, xi += incx) {
		a_elem[0] = a_i[aik];
		a_elem[1] = a_i[aik + 1];
		a_elem[1] = -a_elem[1];
		x_elem[0] = x_i[xi];
		x_elem[1] = x_i[xi + 1];
		{
		  prod[0] = a_elem[0] * x_elem[0] - a_elem[1] * x_elem[1];
		  prod[1] = a_elem[0] * x_elem[1] + a_elem[1] * x_elem[0];
		}

		sum[0] = sum[0] + prod[0];
		sum[1] = sum[1] + prod[1];
	      }
	      a_elem[0] = a_i[aik];
	      x_elem[0] = x_i[xi];
	      x_elem[1] = x_i[xi + 1];
	      {
		prod[0] = x_elem[0] * a_elem[0];
		prod[1] = x_elem[1] * a_elem[0];
	      }
	      sum[0] = sum[0] + prod[0];
	      sum[1] = sum[1] + prod[1];
	      k++;
	      aik += incaik2;
	      xi += incx;
	      for (; k < n_i; k++, aik += incaik2, xi += incx) {
		a_elem[0] = a_i[aik];
		a_elem[1] = a_i[aik + 1];

		x_elem[0] = x_i[xi];
		x_elem[1] = x_i[xi + 1];
		{
		  prod[0] = a_elem[0] * x_elem[0] - a_elem[1] * x_elem[1];
		  prod[1] = a_elem[0] * x_elem[1] + a_elem[1] * x_elem[0];
		}

		sum[0] = sum[0] + prod[0];
		sum[1] = sum[1] + prod[1];
	      }
	      y_elem[0] = y_i[yi];
	      y_elem[1] = y_i[yi + 1];
	      {
		tmp2[0] = y_elem[0] * beta_i[0] - y_elem[1] * beta_i[1];
		tmp2[1] = y_elem[0] * beta_i[1] + y_elem[1] * beta_i[0];
	      }

	      {
		tmp1[0] = sum[0] * alpha_i[0] - sum[1] * alpha_i[1];
		tmp1[1] = sum[0] * alpha_i[1] + sum[1] * alpha_i[0];
	      }

	      tmp1[0] = tmp2[0] + tmp1[0];
	      tmp1[1] = tmp2[1] + tmp1[1];
	      y_i[yi] = tmp1[0];
	      y_i[yi + 1] = tmp1[1];
	    }
	  }
	}
      }


      break;
    }
  case blas_prec_indigenous:
  case blas_prec_double:{

      /* Integer Index Variables */
      int i, k;

      int xi, yi;
      int aik, astarti, x_starti, y_starti;

      int incai;
      int incaik, incaik2;

      int n_i;

      /* Input Matrices */
      const float *a_i = (float *) a;
      const float *x_i = (float *) x;

      /* Output Vector */
      float *y_i = (float *) y;

      /* Input Scalars */
      float *alpha_i = (float *) alpha;
      float *beta_i = (float *) beta;

      /* Temporary Floating-Point Variables */
      float a_elem[2];
      float x_elem[2];
      float y_elem[2];
      double prod[2];
      double sum[2];
      double tmp1[2];
      double tmp2[2];



      /* Test for no-op */
      if (n <= 0) {
	return;
      }
      if (alpha_i[0] == 0.0 && alpha_i[1] == 0.0
	  && (beta_i[0] == 1.0 && beta_i[1] == 0.0)) {
	return;
      }

      /* Check for error conditions. */
      if (order != blas_colmajor && order != blas_rowmajor) {
	BLAS_error(routine_name, -1, order, NULL);
      }
      if (uplo != blas_upper && uplo != blas_lower) {
	BLAS_error(routine_name, -2, uplo, NULL);
      }
      if (lda < n) {
	BLAS_error(routine_name, -3, n, NULL);
      }
      if (incx == 0) {
	BLAS_error(routine_name, -8, incx, NULL);
      }
      if (incy == 0) {
	BLAS_error(routine_name, -11, incy, NULL);
      }

      /* Set Index Parameters */
      n_i = n;

      if ((order == blas_colmajor && uplo == blas_upper) ||
	  (order == blas_rowmajor && uplo == blas_lower)) {
	incai = lda;
	incaik = 1;
	incaik2 = lda;
      } else {
	incai = 1;
	incaik = lda;
	incaik2 = 1;
      }
      /* Adjustment to increments (if any) */
      incx *= 2;
      incy *= 2;
      incai *= 2;
      incaik *= 2;
      incaik2 *= 2;
      if (incx < 0) {
	x_starti = (-n_i + 1) * incx;
      } else {
	x_starti = 0;
      }
      if (incy < 0) {
	y_starti = (-n_i + 1) * incy;
      } else {
	y_starti = 0;
      }



      /* alpha = 0.  In this case, just return beta * y */
      if (alpha_i[0] == 0.0 && alpha_i[1] == 0.0) {
	for (i = 0, yi = y_starti; i < n_i; i++, yi += incy) {
	  y_elem[0] = y_i[yi];
	  y_elem[1] = y_i[yi + 1];
	  {
	    tmp1[0] =
	      (double) y_elem[0] * beta_i[0] - (double) y_elem[1] * beta_i[1];
	    tmp1[1] =
	      (double) y_elem[0] * beta_i[1] + (double) y_elem[1] * beta_i[0];
	  }
	  y_i[yi] = tmp1[0];
	  y_i[yi + 1] = tmp1[1];
	}
      } else {
	/*  determine whether we conjugate in first loop or second loop */

	if (uplo == blas_lower) {
	  /*  conjugate second */

	  /* Case alpha == 1. */
	  if ((alpha_i[0] == 1.0 && alpha_i[1] == 0.0)) {

	    if (beta_i[0] == 0.0 && beta_i[1] == 0.0) {
	      /* Case alpha = 1, beta = 0.  We compute  y <--- A * x */
	      for (i = 0, yi = y_starti, astarti = 0;
		   i < n_i; i++, yi += incy, astarti += incaik2) {
		sum[0] = sum[1] = 0.0;
		for (k = 0, aik = astarti, xi = x_starti;
		     k < i; k++, aik += incaik, xi += incx) {
		  a_elem[0] = a_i[aik];
		  a_elem[1] = a_i[aik + 1];

		  x_elem[0] = x_i[xi];
		  x_elem[1] = x_i[xi + 1];
		  {
		    prod[0] =
		      (double) a_elem[0] * x_elem[0] -
		      (double) a_elem[1] * x_elem[1];
		    prod[1] =
		      (double) a_elem[0] * x_elem[1] +
		      (double) a_elem[1] * x_elem[0];
		  }
		  sum[0] = sum[0] + prod[0];
		  sum[1] = sum[1] + prod[1];
		}
		a_elem[0] = a_i[aik];
		x_elem[0] = x_i[xi];
		x_elem[1] = x_i[xi + 1];
		{
		  prod[0] = (double) x_elem[0] * a_elem[0];
		  prod[1] = (double) x_elem[1] * a_elem[0];
		}
		sum[0] = sum[0] + prod[0];
		sum[1] = sum[1] + prod[1];
		k++;
		aik += incaik2;
		xi += incx;
		for (; k < n_i; k++, aik += incaik2, xi += incx) {
		  a_elem[0] = a_i[aik];
		  a_elem[1] = a_i[aik + 1];
		  a_elem[1] = -a_elem[1];
		  x_elem[0] = x_i[xi];
		  x_elem[1] = x_i[xi + 1];
		  {
		    prod[0] =
		      (double) a_elem[0] * x_elem[0] -
		      (double) a_elem[1] * x_elem[1];
		    prod[1] =
		      (double) a_elem[0] * x_elem[1] +
		      (double) a_elem[1] * x_elem[0];
		  }
		  sum[0] = sum[0] + prod[0];
		  sum[1] = sum[1] + prod[1];
		}
		y_i[yi] = sum[0];
		y_i[yi + 1] = sum[1];
	      }
	    } else {
	      /* Case alpha = 1, but beta != 0. 
	         We compute  y  <--- A * x + beta * y */
	      for (i = 0, yi = y_starti, astarti = 0;
		   i < n_i; i++, yi += incy, astarti += incaik2) {
		sum[0] = sum[1] = 0.0;

		for (k = 0, aik = astarti, xi = x_starti;
		     k < i; k++, aik += incaik, xi += incx) {
		  a_elem[0] = a_i[aik];
		  a_elem[1] = a_i[aik + 1];

		  x_elem[0] = x_i[xi];
		  x_elem[1] = x_i[xi + 1];
		  {
		    prod[0] =
		      (double) a_elem[0] * x_elem[0] -
		      (double) a_elem[1] * x_elem[1];
		    prod[1] =
		      (double) a_elem[0] * x_elem[1] +
		      (double) a_elem[1] * x_elem[0];
		  }
		  sum[0] = sum[0] + prod[0];
		  sum[1] = sum[1] + prod[1];
		}
		a_elem[0] = a_i[aik];
		x_elem[0] = x_i[xi];
		x_elem[1] = x_i[xi + 1];
		{
		  prod[0] = (double) x_elem[0] * a_elem[0];
		  prod[1] = (double) x_elem[1] * a_elem[0];
		}
		sum[0] = sum[0] + prod[0];
		sum[1] = sum[1] + prod[1];
		k++;
		aik += incaik2;
		xi += incx;
		for (; k < n_i; k++, aik += incaik2, xi += incx) {
		  a_elem[0] = a_i[aik];
		  a_elem[1] = a_i[aik + 1];
		  a_elem[1] = -a_elem[1];
		  x_elem[0] = x_i[xi];
		  x_elem[1] = x_i[xi + 1];
		  {
		    prod[0] =
		      (double) a_elem[0] * x_elem[0] -
		      (double) a_elem[1] * x_elem[1];
		    prod[1] =
		      (double) a_elem[0] * x_elem[1] +
		      (double) a_elem[1] * x_elem[0];
		  }
		  sum[0] = sum[0] + prod[0];
		  sum[1] = sum[1] + prod[1];
		}
		y_elem[0] = y_i[yi];
		y_elem[1] = y_i[yi + 1];
		{
		  tmp2[0] =
		    (double) y_elem[0] * beta_i[0] -
		    (double) y_elem[1] * beta_i[1];
		  tmp2[1] =
		    (double) y_elem[0] * beta_i[1] +
		    (double) y_elem[1] * beta_i[0];
		}
		tmp1[0] = sum[0];
		tmp1[1] = sum[1];
		tmp1[0] = tmp2[0] + tmp1[0];
		tmp1[1] = tmp2[1] + tmp1[1];
		y_i[yi] = tmp1[0];
		y_i[yi + 1] = tmp1[1];
	      }
	    }
	  } else {
	    /* The most general form,   y <--- alpha * A * x + beta * y */
	    for (i = 0, yi = y_starti, astarti = 0;
		 i < n_i; i++, yi += incy, astarti += incaik2) {
	      sum[0] = sum[1] = 0.0;

	      for (k = 0, aik = astarti, xi = x_starti;
		   k < i; k++, aik += incaik, xi += incx) {
		a_elem[0] = a_i[aik];
		a_elem[1] = a_i[aik + 1];

		x_elem[0] = x_i[xi];
		x_elem[1] = x_i[xi + 1];
		{
		  prod[0] =
		    (double) a_elem[0] * x_elem[0] -
		    (double) a_elem[1] * x_elem[1];
		  prod[1] =
		    (double) a_elem[0] * x_elem[1] +
		    (double) a_elem[1] * x_elem[0];
		}
		sum[0] = sum[0] + prod[0];
		sum[1] = sum[1] + prod[1];
	      }
	      a_elem[0] = a_i[aik];
	      x_elem[0] = x_i[xi];
	      x_elem[1] = x_i[xi + 1];
	      {
		prod[0] = (double) x_elem[0] * a_elem[0];
		prod[1] = (double) x_elem[1] * a_elem[0];
	      }
	      sum[0] = sum[0] + prod[0];
	      sum[1] = sum[1] + prod[1];
	      k++;
	      aik += incaik2;
	      xi += incx;
	      for (; k < n_i; k++, aik += incaik2, xi += incx) {
		a_elem[0] = a_i[aik];
		a_elem[1] = a_i[aik + 1];
		a_elem[1] = -a_elem[1];
		x_elem[0] = x_i[xi];
		x_elem[1] = x_i[xi + 1];
		{
		  prod[0] =
		    (double) a_elem[0] * x_elem[0] -
		    (double) a_elem[1] * x_elem[1];
		  prod[1] =
		    (double) a_elem[0] * x_elem[1] +
		    (double) a_elem[1] * x_elem[0];
		}
		sum[0] = sum[0] + prod[0];
		sum[1] = sum[1] + prod[1];
	      }
	      y_elem[0] = y_i[yi];
	      y_elem[1] = y_i[yi + 1];
	      {
		tmp2[0] =
		  (double) y_elem[0] * beta_i[0] -
		  (double) y_elem[1] * beta_i[1];
		tmp2[1] =
		  (double) y_elem[0] * beta_i[1] +
		  (double) y_elem[1] * beta_i[0];
	      }
	      {
		tmp1[0] =
		  (double) sum[0] * alpha_i[0] - (double) sum[1] * alpha_i[1];
		tmp1[1] =
		  (double) sum[0] * alpha_i[1] + (double) sum[1] * alpha_i[0];
	      }
	      tmp1[0] = tmp2[0] + tmp1[0];
	      tmp1[1] = tmp2[1] + tmp1[1];
	      y_i[yi] = tmp1[0];
	      y_i[yi + 1] = tmp1[1];
	    }
	  }
	} else {
	  /*  conjugate first loop */

	  /* Case alpha == 1. */
	  if ((alpha_i[0] == 1.0 && alpha_i[1] == 0.0)) {

	    if (beta_i[0] == 0.0 && beta_i[1] == 0.0) {
	      /* Case alpha = 1, beta = 0.  We compute  y <--- A * x */
	      for (i = 0, yi = y_starti, astarti = 0;
		   i < n_i; i++, yi += incy, astarti += incaik2) {
		sum[0] = sum[1] = 0.0;
		for (k = 0, aik = astarti, xi = x_starti;
		     k < i; k++, aik += incaik, xi += incx) {
		  a_elem[0] = a_i[aik];
		  a_elem[1] = a_i[aik + 1];
		  a_elem[1] = -a_elem[1];
		  x_elem[0] = x_i[xi];
		  x_elem[1] = x_i[xi + 1];
		  {
		    prod[0] =
		      (double) a_elem[0] * x_elem[0] -
		      (double) a_elem[1] * x_elem[1];
		    prod[1] =
		      (double) a_elem[0] * x_elem[1] +
		      (double) a_elem[1] * x_elem[0];
		  }
		  sum[0] = sum[0] + prod[0];
		  sum[1] = sum[1] + prod[1];
		}
		a_elem[0] = a_i[aik];
		x_elem[0] = x_i[xi];
		x_elem[1] = x_i[xi + 1];
		{
		  prod[0] = (double) x_elem[0] * a_elem[0];
		  prod[1] = (double) x_elem[1] * a_elem[0];
		}
		sum[0] = sum[0] + prod[0];
		sum[1] = sum[1] + prod[1];
		k++;
		aik += incaik2;
		xi += incx;
		for (; k < n_i; k++, aik += incaik2, xi += incx) {
		  a_elem[0] = a_i[aik];
		  a_elem[1] = a_i[aik + 1];

		  x_elem[0] = x_i[xi];
		  x_elem[1] = x_i[xi + 1];
		  {
		    prod[0] =
		      (double) a_elem[0] * x_elem[0] -
		      (double) a_elem[1] * x_elem[1];
		    prod[1] =
		      (double) a_elem[0] * x_elem[1] +
		      (double) a_elem[1] * x_elem[0];
		  }
		  sum[0] = sum[0] + prod[0];
		  sum[1] = sum[1] + prod[1];
		}
		y_i[yi] = sum[0];
		y_i[yi + 1] = sum[1];
	      }
	    } else {
	      /* Case alpha = 1, but beta != 0. 
	         We compute  y  <--- A * x + beta * y */
	      for (i = 0, yi = y_starti, astarti = 0;
		   i < n_i; i++, yi += incy, astarti += incaik2) {
		sum[0] = sum[1] = 0.0;

		for (k = 0, aik = astarti, xi = x_starti;
		     k < i; k++, aik += incaik, xi += incx) {
		  a_elem[0] = a_i[aik];
		  a_elem[1] = a_i[aik + 1];
		  a_elem[1] = -a_elem[1];
		  x_elem[0] = x_i[xi];
		  x_elem[1] = x_i[xi + 1];
		  {
		    prod[0] =
		      (double) a_elem[0] * x_elem[0] -
		      (double) a_elem[1] * x_elem[1];
		    prod[1] =
		      (double) a_elem[0] * x_elem[1] +
		      (double) a_elem[1] * x_elem[0];
		  }
		  sum[0] = sum[0] + prod[0];
		  sum[1] = sum[1] + prod[1];
		}
		a_elem[0] = a_i[aik];
		x_elem[0] = x_i[xi];
		x_elem[1] = x_i[xi + 1];
		{
		  prod[0] = (double) x_elem[0] * a_elem[0];
		  prod[1] = (double) x_elem[1] * a_elem[0];
		}
		sum[0] = sum[0] + prod[0];
		sum[1] = sum[1] + prod[1];
		k++;
		aik += incaik2;
		xi += incx;
		for (; k < n_i; k++, aik += incaik2, xi += incx) {
		  a_elem[0] = a_i[aik];
		  a_elem[1] = a_i[aik + 1];

		  x_elem[0] = x_i[xi];
		  x_elem[1] = x_i[xi + 1];
		  {
		    prod[0] =
		      (double) a_elem[0] * x_elem[0] -
		      (double) a_elem[1] * x_elem[1];
		    prod[1] =
		      (double) a_elem[0] * x_elem[1] +
		      (double) a_elem[1] * x_elem[0];
		  }
		  sum[0] = sum[0] + prod[0];
		  sum[1] = sum[1] + prod[1];
		}
		y_elem[0] = y_i[yi];
		y_elem[1] = y_i[yi + 1];
		{
		  tmp2[0] =
		    (double) y_elem[0] * beta_i[0] -
		    (double) y_elem[1] * beta_i[1];
		  tmp2[1] =
		    (double) y_elem[0] * beta_i[1] +
		    (double) y_elem[1] * beta_i[0];
		}
		tmp1[0] = sum[0];
		tmp1[1] = sum[1];
		tmp1[0] = tmp2[0] + tmp1[0];
		tmp1[1] = tmp2[1] + tmp1[1];
		y_i[yi] = tmp1[0];
		y_i[yi + 1] = tmp1[1];
	      }
	    }
	  } else {
	    /* The most general form,   y <--- alpha * A * x + beta * y */
	    for (i = 0, yi = y_starti, astarti = 0;
		 i < n_i; i++, yi += incy, astarti += incaik2) {
	      sum[0] = sum[1] = 0.0;

	      for (k = 0, aik = astarti, xi = x_starti;
		   k < i; k++, aik += incaik, xi += incx) {
		a_elem[0] = a_i[aik];
		a_elem[1] = a_i[aik + 1];
		a_elem[1] = -a_elem[1];
		x_elem[0] = x_i[xi];
		x_elem[1] = x_i[xi + 1];
		{
		  prod[0] =
		    (double) a_elem[0] * x_elem[0] -
		    (double) a_elem[1] * x_elem[1];
		  prod[1] =
		    (double) a_elem[0] * x_elem[1] +
		    (double) a_elem[1] * x_elem[0];
		}
		sum[0] = sum[0] + prod[0];
		sum[1] = sum[1] + prod[1];
	      }
	      a_elem[0] = a_i[aik];
	      x_elem[0] = x_i[xi];
	      x_elem[1] = x_i[xi + 1];
	      {
		prod[0] = (double) x_elem[0] * a_elem[0];
		prod[1] = (double) x_elem[1] * a_elem[0];
	      }
	      sum[0] = sum[0] + prod[0];
	      sum[1] = sum[1] + prod[1];
	      k++;
	      aik += incaik2;
	      xi += incx;
	      for (; k < n_i; k++, aik += incaik2, xi += incx) {
		a_elem[0] = a_i[aik];
		a_elem[1] = a_i[aik + 1];

		x_elem[0] = x_i[xi];
		x_elem[1] = x_i[xi + 1];
		{
		  prod[0] =
		    (double) a_elem[0] * x_elem[0] -
		    (double) a_elem[1] * x_elem[1];
		  prod[1] =
		    (double) a_elem[0] * x_elem[1] +
		    (double) a_elem[1] * x_elem[0];
		}
		sum[0] = sum[0] + prod[0];
		sum[1] = sum[1] + prod[1];
	      }
	      y_elem[0] = y_i[yi];
	      y_elem[1] = y_i[yi + 1];
	      {
		tmp2[0] =
		  (double) y_elem[0] * beta_i[0] -
		  (double) y_elem[1] * beta_i[1];
		tmp2[1] =
		  (double) y_elem[0] * beta_i[1] +
		  (double) y_elem[1] * beta_i[0];
	      }
	      {
		tmp1[0] =
		  (double) sum[0] * alpha_i[0] - (double) sum[1] * alpha_i[1];
		tmp1[1] =
		  (double) sum[0] * alpha_i[1] + (double) sum[1] * alpha_i[0];
	      }
	      tmp1[0] = tmp2[0] + tmp1[0];
	      tmp1[1] = tmp2[1] + tmp1[1];
	      y_i[yi] = tmp1[0];
	      y_i[yi + 1] = tmp1[1];
	    }
	  }
	}
      }


      break;
    }

  case blas_prec_extra:{

      /* Integer Index Variables */
      int i, k;

      int xi, yi;
      int aik, astarti, x_starti, y_starti;

      int incai;
      int incaik, incaik2;

      int n_i;

      /* Input Matrices */
      const float *a_i = (float *) a;
      const float *x_i = (float *) x;

      /* Output Vector */
      float *y_i = (float *) y;

      /* Input Scalars */
      float *alpha_i = (float *) alpha;
      float *beta_i = (float *) beta;

      /* Temporary Floating-Point Variables */
      float a_elem[2];
      float x_elem[2];
      float y_elem[2];
      double head_prod[2], tail_prod[2];
      double head_sum[2], tail_sum[2];
      double head_tmp1[2], tail_tmp1[2];
      double head_tmp2[2], tail_tmp2[2];
      FPU_FIX_DECL;


      /* Test for no-op */
      if (n <= 0) {
	return;
      }
      if (alpha_i[0] == 0.0 && alpha_i[1] == 0.0
	  && (beta_i[0] == 1.0 && beta_i[1] == 0.0)) {
	return;
      }

      /* Check for error conditions. */
      if (order != blas_colmajor && order != blas_rowmajor) {
	BLAS_error(routine_name, -1, order, NULL);
      }
      if (uplo != blas_upper && uplo != blas_lower) {
	BLAS_error(routine_name, -2, uplo, NULL);
      }
      if (lda < n) {
	BLAS_error(routine_name, -3, n, NULL);
      }
      if (incx == 0) {
	BLAS_error(routine_name, -8, incx, NULL);
      }
      if (incy == 0) {
	BLAS_error(routine_name, -11, incy, NULL);
      }

      /* Set Index Parameters */
      n_i = n;

      if ((order == blas_colmajor && uplo == blas_upper) ||
	  (order == blas_rowmajor && uplo == blas_lower)) {
	incai = lda;
	incaik = 1;
	incaik2 = lda;
      } else {
	incai = 1;
	incaik = lda;
	incaik2 = 1;
      }
      /* Adjustment to increments (if any) */
      incx *= 2;
      incy *= 2;
      incai *= 2;
      incaik *= 2;
      incaik2 *= 2;
      if (incx < 0) {
	x_starti = (-n_i + 1) * incx;
      } else {
	x_starti = 0;
      }
      if (incy < 0) {
	y_starti = (-n_i + 1) * incy;
      } else {
	y_starti = 0;
      }

      FPU_FIX_START;

      /* alpha = 0.  In this case, just return beta * y */
      if (alpha_i[0] == 0.0 && alpha_i[1] == 0.0) {
	for (i = 0, yi = y_starti; i < n_i; i++, yi += incy) {
	  y_elem[0] = y_i[yi];
	  y_elem[1] = y_i[yi + 1];
	  {
	    double head_e1, tail_e1;
	    double d1;
	    double d2;
	    /* Real part */
	    d1 = (double) y_elem[0] * beta_i[0];
	    d2 = (double) -y_elem[1] * beta_i[1];
	    {
	      /* Compute double-double = double + double. */
	      double e, t1, t2;

	      /* Knuth trick. */
	      t1 = d1 + d2;
	      e = t1 - d1;
	      t2 = ((d2 - e) + (d1 - (t1 - e)));

	      /* The result is t1 + t2, after normalization. */
	      head_e1 = t1 + t2;
	      tail_e1 = t2 - (head_e1 - t1);
	    }
	    head_tmp1[0] = head_e1;
	    tail_tmp1[0] = tail_e1;
	    /* imaginary part */
	    d1 = (double) y_elem[0] * beta_i[1];
	    d2 = (double) y_elem[1] * beta_i[0];
	    {
	      /* Compute double-double = double + double. */
	      double e, t1, t2;

	      /* Knuth trick. */
	      t1 = d1 + d2;
	      e = t1 - d1;
	      t2 = ((d2 - e) + (d1 - (t1 - e)));

	      /* The result is t1 + t2, after normalization. */
	      head_e1 = t1 + t2;
	      tail_e1 = t2 - (head_e1 - t1);
	    }
	    head_tmp1[1] = head_e1;
	    tail_tmp1[1] = tail_e1;
	  }
	  y_i[yi] = head_tmp1[0];
	  y_i[yi + 1] = head_tmp1[1];
	}
      } else {
	/*  determine whether we conjugate in first loop or second loop */

	if (uplo == blas_lower) {
	  /*  conjugate second */

	  /* Case alpha == 1. */
	  if ((alpha_i[0] == 1.0 && alpha_i[1] == 0.0)) {

	    if (beta_i[0] == 0.0 && beta_i[1] == 0.0) {
	      /* Case alpha = 1, beta = 0.  We compute  y <--- A * x */
	      for (i = 0, yi = y_starti, astarti = 0;
		   i < n_i; i++, yi += incy, astarti += incaik2) {
		head_sum[0] = head_sum[1] = tail_sum[0] = tail_sum[1] = 0.0;
		for (k = 0, aik = astarti, xi = x_starti;
		     k < i; k++, aik += incaik, xi += incx) {
		  a_elem[0] = a_i[aik];
		  a_elem[1] = a_i[aik + 1];

		  x_elem[0] = x_i[xi];
		  x_elem[1] = x_i[xi + 1];
		  {
		    double head_e1, tail_e1;
		    double d1;
		    double d2;
		    /* Real part */
		    d1 = (double) a_elem[0] * x_elem[0];
		    d2 = (double) -a_elem[1] * x_elem[1];
		    {
		      /* Compute double-double = double + double. */
		      double e, t1, t2;

		      /* Knuth trick. */
		      t1 = d1 + d2;
		      e = t1 - d1;
		      t2 = ((d2 - e) + (d1 - (t1 - e)));

		      /* The result is t1 + t2, after normalization. */
		      head_e1 = t1 + t2;
		      tail_e1 = t2 - (head_e1 - t1);
		    }
		    head_prod[0] = head_e1;
		    tail_prod[0] = tail_e1;
		    /* imaginary part */
		    d1 = (double) a_elem[0] * x_elem[1];
		    d2 = (double) a_elem[1] * x_elem[0];
		    {
		      /* Compute double-double = double + double. */
		      double e, t1, t2;

		      /* Knuth trick. */
		      t1 = d1 + d2;
		      e = t1 - d1;
		      t2 = ((d2 - e) + (d1 - (t1 - e)));

		      /* The result is t1 + t2, after normalization. */
		      head_e1 = t1 + t2;
		      tail_e1 = t2 - (head_e1 - t1);
		    }
		    head_prod[1] = head_e1;
		    tail_prod[1] = tail_e1;
		  }
		  {
		    double head_t, tail_t;
		    double head_a, tail_a;
		    double head_b, tail_b;
		    /* Real part */
		    head_a = head_sum[0];
		    tail_a = tail_sum[0];
		    head_b = head_prod[0];
		    tail_b = tail_prod[0];
		    {
		      /* Compute double-double = double-double + double-double. */
		      double bv;
		      double s1, s2, t1, t2;

		      /* Add two hi words. */
		      s1 = head_a + head_b;
		      bv = s1 - head_a;
		      s2 = ((head_b - bv) + (head_a - (s1 - bv)));

		      /* Add two lo words. */
		      t1 = tail_a + tail_b;
		      bv = t1 - tail_a;
		      t2 = ((tail_b - bv) + (tail_a - (t1 - bv)));

		      s2 += t1;

		      /* Renormalize (s1, s2)  to  (t1, s2) */
		      t1 = s1 + s2;
		      s2 = s2 - (t1 - s1);

		      t2 += s2;

		      /* Renormalize (t1, t2)  */
		      head_t = t1 + t2;
		      tail_t = t2 - (head_t - t1);
		    }
		    head_sum[0] = head_t;
		    tail_sum[0] = tail_t;
		    /* Imaginary part */
		    head_a = head_sum[1];
		    tail_a = tail_sum[1];
		    head_b = head_prod[1];
		    tail_b = tail_prod[1];
		    {
		      /* Compute double-double = double-double + double-double. */
		      double bv;
		      double s1, s2, t1, t2;

		      /* Add two hi words. */
		      s1 = head_a + head_b;
		      bv = s1 - head_a;
		      s2 = ((head_b - bv) + (head_a - (s1 - bv)));

		      /* Add two lo words. */
		      t1 = tail_a + tail_b;
		      bv = t1 - tail_a;
		      t2 = ((tail_b - bv) + (tail_a - (t1 - bv)));

		      s2 += t1;

		      /* Renormalize (s1, s2)  to  (t1, s2) */
		      t1 = s1 + s2;
		      s2 = s2 - (t1 - s1);

		      t2 += s2;

		      /* Renormalize (t1, t2)  */
		      head_t = t1 + t2;
		      tail_t = t2 - (head_t - t1);
		    }
		    head_sum[1] = head_t;
		    tail_sum[1] = tail_t;
		  }
		}
		a_elem[0] = a_i[aik];
		x_elem[0] = x_i[xi];
		x_elem[1] = x_i[xi + 1];
		{
		  head_prod[0] = (double) x_elem[0] * a_elem[0];
		  tail_prod[0] = 0.0;
		  head_prod[1] = (double) x_elem[1] * a_elem[0];
		  tail_prod[1] = 0.0;
		}
		{
		  double head_t, tail_t;
		  double head_a, tail_a;
		  double head_b, tail_b;
		  /* Real part */
		  head_a = head_sum[0];
		  tail_a = tail_sum[0];
		  head_b = head_prod[0];
		  tail_b = tail_prod[0];
		  {
		    /* Compute double-double = double-double + double-double. */
		    double bv;
		    double s1, s2, t1, t2;

		    /* Add two hi words. */
		    s1 = head_a + head_b;
		    bv = s1 - head_a;
		    s2 = ((head_b - bv) + (head_a - (s1 - bv)));

		    /* Add two lo words. */
		    t1 = tail_a + tail_b;
		    bv = t1 - tail_a;
		    t2 = ((tail_b - bv) + (tail_a - (t1 - bv)));

		    s2 += t1;

		    /* Renormalize (s1, s2)  to  (t1, s2) */
		    t1 = s1 + s2;
		    s2 = s2 - (t1 - s1);

		    t2 += s2;

		    /* Renormalize (t1, t2)  */
		    head_t = t1 + t2;
		    tail_t = t2 - (head_t - t1);
		  }
		  head_sum[0] = head_t;
		  tail_sum[0] = tail_t;
		  /* Imaginary part */
		  head_a = head_sum[1];
		  tail_a = tail_sum[1];
		  head_b = head_prod[1];
		  tail_b = tail_prod[1];
		  {
		    /* Compute double-double = double-double + double-double. */
		    double bv;
		    double s1, s2, t1, t2;

		    /* Add two hi words. */
		    s1 = head_a + head_b;
		    bv = s1 - head_a;
		    s2 = ((head_b - bv) + (head_a - (s1 - bv)));

		    /* Add two lo words. */
		    t1 = tail_a + tail_b;
		    bv = t1 - tail_a;
		    t2 = ((tail_b - bv) + (tail_a - (t1 - bv)));

		    s2 += t1;

		    /* Renormalize (s1, s2)  to  (t1, s2) */
		    t1 = s1 + s2;
		    s2 = s2 - (t1 - s1);

		    t2 += s2;

		    /* Renormalize (t1, t2)  */
		    head_t = t1 + t2;
		    tail_t = t2 - (head_t - t1);
		  }
		  head_sum[1] = head_t;
		  tail_sum[1] = tail_t;
		}
		k++;
		aik += incaik2;
		xi += incx;
		for (; k < n_i; k++, aik += incaik2, xi += incx) {
		  a_elem[0] = a_i[aik];
		  a_elem[1] = a_i[aik + 1];
		  a_elem[1] = -a_elem[1];
		  x_elem[0] = x_i[xi];
		  x_elem[1] = x_i[xi + 1];
		  {
		    double head_e1, tail_e1;
		    double d1;
		    double d2;
		    /* Real part */
		    d1 = (double) a_elem[0] * x_elem[0];
		    d2 = (double) -a_elem[1] * x_elem[1];
		    {
		      /* Compute double-double = double + double. */
		      double e, t1, t2;

		      /* Knuth trick. */
		      t1 = d1 + d2;
		      e = t1 - d1;
		      t2 = ((d2 - e) + (d1 - (t1 - e)));

		      /* The result is t1 + t2, after normalization. */
		      head_e1 = t1 + t2;
		      tail_e1 = t2 - (head_e1 - t1);
		    }
		    head_prod[0] = head_e1;
		    tail_prod[0] = tail_e1;
		    /* imaginary part */
		    d1 = (double) a_elem[0] * x_elem[1];
		    d2 = (double) a_elem[1] * x_elem[0];
		    {
		      /* Compute double-double = double + double. */
		      double e, t1, t2;

		      /* Knuth trick. */
		      t1 = d1 + d2;
		      e = t1 - d1;
		      t2 = ((d2 - e) + (d1 - (t1 - e)));

		      /* The result is t1 + t2, after normalization. */
		      head_e1 = t1 + t2;
		      tail_e1 = t2 - (head_e1 - t1);
		    }
		    head_prod[1] = head_e1;
		    tail_prod[1] = tail_e1;
		  }
		  {
		    double head_t, tail_t;
		    double head_a, tail_a;
		    double head_b, tail_b;
		    /* Real part */
		    head_a = head_sum[0];
		    tail_a = tail_sum[0];
		    head_b = head_prod[0];
		    tail_b = tail_prod[0];
		    {
		      /* Compute double-double = double-double + double-double. */
		      double bv;
		      double s1, s2, t1, t2;

		      /* Add two hi words. */
		      s1 = head_a + head_b;
		      bv = s1 - head_a;
		      s2 = ((head_b - bv) + (head_a - (s1 - bv)));

		      /* Add two lo words. */
		      t1 = tail_a + tail_b;
		      bv = t1 - tail_a;
		      t2 = ((tail_b - bv) + (tail_a - (t1 - bv)));

		      s2 += t1;

		      /* Renormalize (s1, s2)  to  (t1, s2) */
		      t1 = s1 + s2;
		      s2 = s2 - (t1 - s1);

		      t2 += s2;

		      /* Renormalize (t1, t2)  */
		      head_t = t1 + t2;
		      tail_t = t2 - (head_t - t1);
		    }
		    head_sum[0] = head_t;
		    tail_sum[0] = tail_t;
		    /* Imaginary part */
		    head_a = head_sum[1];
		    tail_a = tail_sum[1];
		    head_b = head_prod[1];
		    tail_b = tail_prod[1];
		    {
		      /* Compute double-double = double-double + double-double. */
		      double bv;
		      double s1, s2, t1, t2;

		      /* Add two hi words. */
		      s1 = head_a + head_b;
		      bv = s1 - head_a;
		      s2 = ((head_b - bv) + (head_a - (s1 - bv)));

		      /* Add two lo words. */
		      t1 = tail_a + tail_b;
		      bv = t1 - tail_a;
		      t2 = ((tail_b - bv) + (tail_a - (t1 - bv)));

		      s2 += t1;

		      /* Renormalize (s1, s2)  to  (t1, s2) */
		      t1 = s1 + s2;
		      s2 = s2 - (t1 - s1);

		      t2 += s2;

		      /* Renormalize (t1, t2)  */
		      head_t = t1 + t2;
		      tail_t = t2 - (head_t - t1);
		    }
		    head_sum[1] = head_t;
		    tail_sum[1] = tail_t;
		  }
		}
		y_i[yi] = head_sum[0];
		y_i[yi + 1] = head_sum[1];
	      }
	    } else {
	      /* Case alpha = 1, but beta != 0. 
	         We compute  y  <--- A * x + beta * y */
	      for (i = 0, yi = y_starti, astarti = 0;
		   i < n_i; i++, yi += incy, astarti += incaik2) {
		head_sum[0] = head_sum[1] = tail_sum[0] = tail_sum[1] = 0.0;

		for (k = 0, aik = astarti, xi = x_starti;
		     k < i; k++, aik += incaik, xi += incx) {
		  a_elem[0] = a_i[aik];
		  a_elem[1] = a_i[aik + 1];

		  x_elem[0] = x_i[xi];
		  x_elem[1] = x_i[xi + 1];
		  {
		    double head_e1, tail_e1;
		    double d1;
		    double d2;
		    /* Real part */
		    d1 = (double) a_elem[0] * x_elem[0];
		    d2 = (double) -a_elem[1] * x_elem[1];
		    {
		      /* Compute double-double = double + double. */
		      double e, t1, t2;

		      /* Knuth trick. */
		      t1 = d1 + d2;
		      e = t1 - d1;
		      t2 = ((d2 - e) + (d1 - (t1 - e)));

		      /* The result is t1 + t2, after normalization. */
		      head_e1 = t1 + t2;
		      tail_e1 = t2 - (head_e1 - t1);
		    }
		    head_prod[0] = head_e1;
		    tail_prod[0] = tail_e1;
		    /* imaginary part */
		    d1 = (double) a_elem[0] * x_elem[1];
		    d2 = (double) a_elem[1] * x_elem[0];
		    {
		      /* Compute double-double = double + double. */
		      double e, t1, t2;

		      /* Knuth trick. */
		      t1 = d1 + d2;
		      e = t1 - d1;
		      t2 = ((d2 - e) + (d1 - (t1 - e)));

		      /* The result is t1 + t2, after normalization. */
		      head_e1 = t1 + t2;
		      tail_e1 = t2 - (head_e1 - t1);
		    }
		    head_prod[1] = head_e1;
		    tail_prod[1] = tail_e1;
		  }
		  {
		    double head_t, tail_t;
		    double head_a, tail_a;
		    double head_b, tail_b;
		    /* Real part */
		    head_a = head_sum[0];
		    tail_a = tail_sum[0];
		    head_b = head_prod[0];
		    tail_b = tail_prod[0];
		    {
		      /* Compute double-double = double-double + double-double. */
		      double bv;
		      double s1, s2, t1, t2;

		      /* Add two hi words. */
		      s1 = head_a + head_b;
		      bv = s1 - head_a;
		      s2 = ((head_b - bv) + (head_a - (s1 - bv)));

		      /* Add two lo words. */
		      t1 = tail_a + tail_b;
		      bv = t1 - tail_a;
		      t2 = ((tail_b - bv) + (tail_a - (t1 - bv)));

		      s2 += t1;

		      /* Renormalize (s1, s2)  to  (t1, s2) */
		      t1 = s1 + s2;
		      s2 = s2 - (t1 - s1);

		      t2 += s2;

		      /* Renormalize (t1, t2)  */
		      head_t = t1 + t2;
		      tail_t = t2 - (head_t - t1);
		    }
		    head_sum[0] = head_t;
		    tail_sum[0] = tail_t;
		    /* Imaginary part */
		    head_a = head_sum[1];
		    tail_a = tail_sum[1];
		    head_b = head_prod[1];
		    tail_b = tail_prod[1];
		    {
		      /* Compute double-double = double-double + double-double. */
		      double bv;
		      double s1, s2, t1, t2;

		      /* Add two hi words. */
		      s1 = head_a + head_b;
		      bv = s1 - head_a;
		      s2 = ((head_b - bv) + (head_a - (s1 - bv)));

		      /* Add two lo words. */
		      t1 = tail_a + tail_b;
		      bv = t1 - tail_a;
		      t2 = ((tail_b - bv) + (tail_a - (t1 - bv)));

		      s2 += t1;

		      /* Renormalize (s1, s2)  to  (t1, s2) */
		      t1 = s1 + s2;
		      s2 = s2 - (t1 - s1);

		      t2 += s2;

		      /* Renormalize (t1, t2)  */
		      head_t = t1 + t2;
		      tail_t = t2 - (head_t - t1);
		    }
		    head_sum[1] = head_t;
		    tail_sum[1] = tail_t;
		  }
		}
		a_elem[0] = a_i[aik];
		x_elem[0] = x_i[xi];
		x_elem[1] = x_i[xi + 1];
		{
		  head_prod[0] = (double) x_elem[0] * a_elem[0];
		  tail_prod[0] = 0.0;
		  head_prod[1] = (double) x_elem[1] * a_elem[0];
		  tail_prod[1] = 0.0;
		}
		{
		  double head_t, tail_t;
		  double head_a, tail_a;
		  double head_b, tail_b;
		  /* Real part */
		  head_a = head_sum[0];
		  tail_a = tail_sum[0];
		  head_b = head_prod[0];
		  tail_b = tail_prod[0];
		  {
		    /* Compute double-double = double-double + double-double. */
		    double bv;
		    double s1, s2, t1, t2;

		    /* Add two hi words. */
		    s1 = head_a + head_b;
		    bv = s1 - head_a;
		    s2 = ((head_b - bv) + (head_a - (s1 - bv)));

		    /* Add two lo words. */
		    t1 = tail_a + tail_b;
		    bv = t1 - tail_a;
		    t2 = ((tail_b - bv) + (tail_a - (t1 - bv)));

		    s2 += t1;

		    /* Renormalize (s1, s2)  to  (t1, s2) */
		    t1 = s1 + s2;
		    s2 = s2 - (t1 - s1);

		    t2 += s2;

		    /* Renormalize (t1, t2)  */
		    head_t = t1 + t2;
		    tail_t = t2 - (head_t - t1);
		  }
		  head_sum[0] = head_t;
		  tail_sum[0] = tail_t;
		  /* Imaginary part */
		  head_a = head_sum[1];
		  tail_a = tail_sum[1];
		  head_b = head_prod[1];
		  tail_b = tail_prod[1];
		  {
		    /* Compute double-double = double-double + double-double. */
		    double bv;
		    double s1, s2, t1, t2;

		    /* Add two hi words. */
		    s1 = head_a + head_b;
		    bv = s1 - head_a;
		    s2 = ((head_b - bv) + (head_a - (s1 - bv)));

		    /* Add two lo words. */
		    t1 = tail_a + tail_b;
		    bv = t1 - tail_a;
		    t2 = ((tail_b - bv) + (tail_a - (t1 - bv)));

		    s2 += t1;

		    /* Renormalize (s1, s2)  to  (t1, s2) */
		    t1 = s1 + s2;
		    s2 = s2 - (t1 - s1);

		    t2 += s2;

		    /* Renormalize (t1, t2)  */
		    head_t = t1 + t2;
		    tail_t = t2 - (head_t - t1);
		  }
		  head_sum[1] = head_t;
		  tail_sum[1] = tail_t;
		}
		k++;
		aik += incaik2;
		xi += incx;
		for (; k < n_i; k++, aik += incaik2, xi += incx) {
		  a_elem[0] = a_i[aik];
		  a_elem[1] = a_i[aik + 1];
		  a_elem[1] = -a_elem[1];
		  x_elem[0] = x_i[xi];
		  x_elem[1] = x_i[xi + 1];
		  {
		    double head_e1, tail_e1;
		    double d1;
		    double d2;
		    /* Real part */
		    d1 = (double) a_elem[0] * x_elem[0];
		    d2 = (double) -a_elem[1] * x_elem[1];
		    {
		      /* Compute double-double = double + double. */
		      double e, t1, t2;

		      /* Knuth trick. */
		      t1 = d1 + d2;
		      e = t1 - d1;
		      t2 = ((d2 - e) + (d1 - (t1 - e)));

		      /* The result is t1 + t2, after normalization. */
		      head_e1 = t1 + t2;
		      tail_e1 = t2 - (head_e1 - t1);
		    }
		    head_prod[0] = head_e1;
		    tail_prod[0] = tail_e1;
		    /* imaginary part */
		    d1 = (double) a_elem[0] * x_elem[1];
		    d2 = (double) a_elem[1] * x_elem[0];
		    {
		      /* Compute double-double = double + double. */
		      double e, t1, t2;

		      /* Knuth trick. */
		      t1 = d1 + d2;
		      e = t1 - d1;
		      t2 = ((d2 - e) + (d1 - (t1 - e)));

		      /* The result is t1 + t2, after normalization. */
		      head_e1 = t1 + t2;
		      tail_e1 = t2 - (head_e1 - t1);
		    }
		    head_prod[1] = head_e1;
		    tail_prod[1] = tail_e1;
		  }
		  {
		    double head_t, tail_t;
		    double head_a, tail_a;
		    double head_b, tail_b;
		    /* Real part */
		    head_a = head_sum[0];
		    tail_a = tail_sum[0];
		    head_b = head_prod[0];
		    tail_b = tail_prod[0];
		    {
		      /* Compute double-double = double-double + double-double. */
		      double bv;
		      double s1, s2, t1, t2;

		      /* Add two hi words. */
		      s1 = head_a + head_b;
		      bv = s1 - head_a;
		      s2 = ((head_b - bv) + (head_a - (s1 - bv)));

		      /* Add two lo words. */
		      t1 = tail_a + tail_b;
		      bv = t1 - tail_a;
		      t2 = ((tail_b - bv) + (tail_a - (t1 - bv)));

		      s2 += t1;

		      /* Renormalize (s1, s2)  to  (t1, s2) */
		      t1 = s1 + s2;
		      s2 = s2 - (t1 - s1);

		      t2 += s2;

		      /* Renormalize (t1, t2)  */
		      head_t = t1 + t2;
		      tail_t = t2 - (head_t - t1);
		    }
		    head_sum[0] = head_t;
		    tail_sum[0] = tail_t;
		    /* Imaginary part */
		    head_a = head_sum[1];
		    tail_a = tail_sum[1];
		    head_b = head_prod[1];
		    tail_b = tail_prod[1];
		    {
		      /* Compute double-double = double-double + double-double. */
		      double bv;
		      double s1, s2, t1, t2;

		      /* Add two hi words. */
		      s1 = head_a + head_b;
		      bv = s1 - head_a;
		      s2 = ((head_b - bv) + (head_a - (s1 - bv)));

		      /* Add two lo words. */
		      t1 = tail_a + tail_b;
		      bv = t1 - tail_a;
		      t2 = ((tail_b - bv) + (tail_a - (t1 - bv)));

		      s2 += t1;

		      /* Renormalize (s1, s2)  to  (t1, s2) */
		      t1 = s1 + s2;
		      s2 = s2 - (t1 - s1);

		      t2 += s2;

		      /* Renormalize (t1, t2)  */
		      head_t = t1 + t2;
		      tail_t = t2 - (head_t - t1);
		    }
		    head_sum[1] = head_t;
		    tail_sum[1] = tail_t;
		  }
		}
		y_elem[0] = y_i[yi];
		y_elem[1] = y_i[yi + 1];
		{
		  double head_e1, tail_e1;
		  double d1;
		  double d2;
		  /* Real part */
		  d1 = (double) y_elem[0] * beta_i[0];
		  d2 = (double) -y_elem[1] * beta_i[1];
		  {
		    /* Compute double-double = double + double. */
		    double e, t1, t2;

		    /* Knuth trick. */
		    t1 = d1 + d2;
		    e = t1 - d1;
		    t2 = ((d2 - e) + (d1 - (t1 - e)));

		    /* The result is t1 + t2, after normalization. */
		    head_e1 = t1 + t2;
		    tail_e1 = t2 - (head_e1 - t1);
		  }
		  head_tmp2[0] = head_e1;
		  tail_tmp2[0] = tail_e1;
		  /* imaginary part */
		  d1 = (double) y_elem[0] * beta_i[1];
		  d2 = (double) y_elem[1] * beta_i[0];
		  {
		    /* Compute double-double = double + double. */
		    double e, t1, t2;

		    /* Knuth trick. */
		    t1 = d1 + d2;
		    e = t1 - d1;
		    t2 = ((d2 - e) + (d1 - (t1 - e)));

		    /* The result is t1 + t2, after normalization. */
		    head_e1 = t1 + t2;
		    tail_e1 = t2 - (head_e1 - t1);
		  }
		  head_tmp2[1] = head_e1;
		  tail_tmp2[1] = tail_e1;
		}
		head_tmp1[0] = head_sum[0];
		tail_tmp1[0] = tail_sum[0];
		head_tmp1[1] = head_sum[1];
		tail_tmp1[1] = tail_sum[1];
		{
		  double head_t, tail_t;
		  double head_a, tail_a;
		  double head_b, tail_b;
		  /* Real part */
		  head_a = head_tmp2[0];
		  tail_a = tail_tmp2[0];
		  head_b = head_tmp1[0];
		  tail_b = tail_tmp1[0];
		  {
		    /* Compute double-double = double-double + double-double. */
		    double bv;
		    double s1, s2, t1, t2;

		    /* Add two hi words. */
		    s1 = head_a + head_b;
		    bv = s1 - head_a;
		    s2 = ((head_b - bv) + (head_a - (s1 - bv)));

		    /* Add two lo words. */
		    t1 = tail_a + tail_b;
		    bv = t1 - tail_a;
		    t2 = ((tail_b - bv) + (tail_a - (t1 - bv)));

		    s2 += t1;

		    /* Renormalize (s1, s2)  to  (t1, s2) */
		    t1 = s1 + s2;
		    s2 = s2 - (t1 - s1);

		    t2 += s2;

		    /* Renormalize (t1, t2)  */
		    head_t = t1 + t2;
		    tail_t = t2 - (head_t - t1);
		  }
		  head_tmp1[0] = head_t;
		  tail_tmp1[0] = tail_t;
		  /* Imaginary part */
		  head_a = head_tmp2[1];
		  tail_a = tail_tmp2[1];
		  head_b = head_tmp1[1];
		  tail_b = tail_tmp1[1];
		  {
		    /* Compute double-double = double-double + double-double. */
		    double bv;
		    double s1, s2, t1, t2;

		    /* Add two hi words. */
		    s1 = head_a + head_b;
		    bv = s1 - head_a;
		    s2 = ((head_b - bv) + (head_a - (s1 - bv)));

		    /* Add two lo words. */
		    t1 = tail_a + tail_b;
		    bv = t1 - tail_a;
		    t2 = ((tail_b - bv) + (tail_a - (t1 - bv)));

		    s2 += t1;

		    /* Renormalize (s1, s2)  to  (t1, s2) */
		    t1 = s1 + s2;
		    s2 = s2 - (t1 - s1);

		    t2 += s2;

		    /* Renormalize (t1, t2)  */
		    head_t = t1 + t2;
		    tail_t = t2 - (head_t - t1);
		  }
		  head_tmp1[1] = head_t;
		  tail_tmp1[1] = tail_t;
		}
		y_i[yi] = head_tmp1[0];
		y_i[yi + 1] = head_tmp1[1];
	      }
	    }
	  } else {
	    /* The most general form,   y <--- alpha * A * x + beta * y */
	    for (i = 0, yi = y_starti, astarti = 0;
		 i < n_i; i++, yi += incy, astarti += incaik2) {
	      head_sum[0] = head_sum[1] = tail_sum[0] = tail_sum[1] = 0.0;

	      for (k = 0, aik = astarti, xi = x_starti;
		   k < i; k++, aik += incaik, xi += incx) {
		a_elem[0] = a_i[aik];
		a_elem[1] = a_i[aik + 1];

		x_elem[0] = x_i[xi];
		x_elem[1] = x_i[xi + 1];
		{
		  double head_e1, tail_e1;
		  double d1;
		  double d2;
		  /* Real part */
		  d1 = (double) a_elem[0] * x_elem[0];
		  d2 = (double) -a_elem[1] * x_elem[1];
		  {
		    /* Compute double-double = double + double. */
		    double e, t1, t2;

		    /* Knuth trick. */
		    t1 = d1 + d2;
		    e = t1 - d1;
		    t2 = ((d2 - e) + (d1 - (t1 - e)));

		    /* The result is t1 + t2, after normalization. */
		    head_e1 = t1 + t2;
		    tail_e1 = t2 - (head_e1 - t1);
		  }
		  head_prod[0] = head_e1;
		  tail_prod[0] = tail_e1;
		  /* imaginary part */
		  d1 = (double) a_elem[0] * x_elem[1];
		  d2 = (double) a_elem[1] * x_elem[0];
		  {
		    /* Compute double-double = double + double. */
		    double e, t1, t2;

		    /* Knuth trick. */
		    t1 = d1 + d2;
		    e = t1 - d1;
		    t2 = ((d2 - e) + (d1 - (t1 - e)));

		    /* The result is t1 + t2, after normalization. */
		    head_e1 = t1 + t2;
		    tail_e1 = t2 - (head_e1 - t1);
		  }
		  head_prod[1] = head_e1;
		  tail_prod[1] = tail_e1;
		}
		{
		  double head_t, tail_t;
		  double head_a, tail_a;
		  double head_b, tail_b;
		  /* Real part */
		  head_a = head_sum[0];
		  tail_a = tail_sum[0];
		  head_b = head_prod[0];
		  tail_b = tail_prod[0];
		  {
		    /* Compute double-double = double-double + double-double. */
		    double bv;
		    double s1, s2, t1, t2;

		    /* Add two hi words. */
		    s1 = head_a + head_b;
		    bv = s1 - head_a;
		    s2 = ((head_b - bv) + (head_a - (s1 - bv)));

		    /* Add two lo words. */
		    t1 = tail_a + tail_b;
		    bv = t1 - tail_a;
		    t2 = ((tail_b - bv) + (tail_a - (t1 - bv)));

		    s2 += t1;

		    /* Renormalize (s1, s2)  to  (t1, s2) */
		    t1 = s1 + s2;
		    s2 = s2 - (t1 - s1);

		    t2 += s2;

		    /* Renormalize (t1, t2)  */
		    head_t = t1 + t2;
		    tail_t = t2 - (head_t - t1);
		  }
		  head_sum[0] = head_t;
		  tail_sum[0] = tail_t;
		  /* Imaginary part */
		  head_a = head_sum[1];
		  tail_a = tail_sum[1];
		  head_b = head_prod[1];
		  tail_b = tail_prod[1];
		  {
		    /* Compute double-double = double-double + double-double. */
		    double bv;
		    double s1, s2, t1, t2;

		    /* Add two hi words. */
		    s1 = head_a + head_b;
		    bv = s1 - head_a;
		    s2 = ((head_b - bv) + (head_a - (s1 - bv)));

		    /* Add two lo words. */
		    t1 = tail_a + tail_b;
		    bv = t1 - tail_a;
		    t2 = ((tail_b - bv) + (tail_a - (t1 - bv)));

		    s2 += t1;

		    /* Renormalize (s1, s2)  to  (t1, s2) */
		    t1 = s1 + s2;
		    s2 = s2 - (t1 - s1);

		    t2 += s2;

		    /* Renormalize (t1, t2)  */
		    head_t = t1 + t2;
		    tail_t = t2 - (head_t - t1);
		  }
		  head_sum[1] = head_t;
		  tail_sum[1] = tail_t;
		}
	      }
	      a_elem[0] = a_i[aik];
	      x_elem[0] = x_i[xi];
	      x_elem[1] = x_i[xi + 1];
	      {
		head_prod[0] = (double) x_elem[0] * a_elem[0];
		tail_prod[0] = 0.0;
		head_prod[1] = (double) x_elem[1] * a_elem[0];
		tail_prod[1] = 0.0;
	      }
	      {
		double head_t, tail_t;
		double head_a, tail_a;
		double head_b, tail_b;
		/* Real part */
		head_a = head_sum[0];
		tail_a = tail_sum[0];
		head_b = head_prod[0];
		tail_b = tail_prod[0];
		{
		  /* Compute double-double = double-double + double-double. */
		  double bv;
		  double s1, s2, t1, t2;

		  /* Add two hi words. */
		  s1 = head_a + head_b;
		  bv = s1 - head_a;
		  s2 = ((head_b - bv) + (head_a - (s1 - bv)));

		  /* Add two lo words. */
		  t1 = tail_a + tail_b;
		  bv = t1 - tail_a;
		  t2 = ((tail_b - bv) + (tail_a - (t1 - bv)));

		  s2 += t1;

		  /* Renormalize (s1, s2)  to  (t1, s2) */
		  t1 = s1 + s2;
		  s2 = s2 - (t1 - s1);

		  t2 += s2;

		  /* Renormalize (t1, t2)  */
		  head_t = t1 + t2;
		  tail_t = t2 - (head_t - t1);
		}
		head_sum[0] = head_t;
		tail_sum[0] = tail_t;
		/* Imaginary part */
		head_a = head_sum[1];
		tail_a = tail_sum[1];
		head_b = head_prod[1];
		tail_b = tail_prod[1];
		{
		  /* Compute double-double = double-double + double-double. */
		  double bv;
		  double s1, s2, t1, t2;

		  /* Add two hi words. */
		  s1 = head_a + head_b;
		  bv = s1 - head_a;
		  s2 = ((head_b - bv) + (head_a - (s1 - bv)));

		  /* Add two lo words. */
		  t1 = tail_a + tail_b;
		  bv = t1 - tail_a;
		  t2 = ((tail_b - bv) + (tail_a - (t1 - bv)));

		  s2 += t1;

		  /* Renormalize (s1, s2)  to  (t1, s2) */
		  t1 = s1 + s2;
		  s2 = s2 - (t1 - s1);

		  t2 += s2;

		  /* Renormalize (t1, t2)  */
		  head_t = t1 + t2;
		  tail_t = t2 - (head_t - t1);
		}
		head_sum[1] = head_t;
		tail_sum[1] = tail_t;
	      }
	      k++;
	      aik += incaik2;
	      xi += incx;
	      for (; k < n_i; k++, aik += incaik2, xi += incx) {
		a_elem[0] = a_i[aik];
		a_elem[1] = a_i[aik + 1];
		a_elem[1] = -a_elem[1];
		x_elem[0] = x_i[xi];
		x_elem[1] = x_i[xi + 1];
		{
		  double head_e1, tail_e1;
		  double d1;
		  double d2;
		  /* Real part */
		  d1 = (double) a_elem[0] * x_elem[0];
		  d2 = (double) -a_elem[1] * x_elem[1];
		  {
		    /* Compute double-double = double + double. */
		    double e, t1, t2;

		    /* Knuth trick. */
		    t1 = d1 + d2;
		    e = t1 - d1;
		    t2 = ((d2 - e) + (d1 - (t1 - e)));

		    /* The result is t1 + t2, after normalization. */
		    head_e1 = t1 + t2;
		    tail_e1 = t2 - (head_e1 - t1);
		  }
		  head_prod[0] = head_e1;
		  tail_prod[0] = tail_e1;
		  /* imaginary part */
		  d1 = (double) a_elem[0] * x_elem[1];
		  d2 = (double) a_elem[1] * x_elem[0];
		  {
		    /* Compute double-double = double + double. */
		    double e, t1, t2;

		    /* Knuth trick. */
		    t1 = d1 + d2;
		    e = t1 - d1;
		    t2 = ((d2 - e) + (d1 - (t1 - e)));

		    /* The result is t1 + t2, after normalization. */
		    head_e1 = t1 + t2;
		    tail_e1 = t2 - (head_e1 - t1);
		  }
		  head_prod[1] = head_e1;
		  tail_prod[1] = tail_e1;
		}
		{
		  double head_t, tail_t;
		  double head_a, tail_a;
		  double head_b, tail_b;
		  /* Real part */
		  head_a = head_sum[0];
		  tail_a = tail_sum[0];
		  head_b = head_prod[0];
		  tail_b = tail_prod[0];
		  {
		    /* Compute double-double = double-double + double-double. */
		    double bv;
		    double s1, s2, t1, t2;

		    /* Add two hi words. */
		    s1 = head_a + head_b;
		    bv = s1 - head_a;
		    s2 = ((head_b - bv) + (head_a - (s1 - bv)));

		    /* Add two lo words. */
		    t1 = tail_a + tail_b;
		    bv = t1 - tail_a;
		    t2 = ((tail_b - bv) + (tail_a - (t1 - bv)));

		    s2 += t1;

		    /* Renormalize (s1, s2)  to  (t1, s2) */
		    t1 = s1 + s2;
		    s2 = s2 - (t1 - s1);

		    t2 += s2;

		    /* Renormalize (t1, t2)  */
		    head_t = t1 + t2;
		    tail_t = t2 - (head_t - t1);
		  }
		  head_sum[0] = head_t;
		  tail_sum[0] = tail_t;
		  /* Imaginary part */
		  head_a = head_sum[1];
		  tail_a = tail_sum[1];
		  head_b = head_prod[1];
		  tail_b = tail_prod[1];
		  {
		    /* Compute double-double = double-double + double-double. */
		    double bv;
		    double s1, s2, t1, t2;

		    /* Add two hi words. */
		    s1 = head_a + head_b;
		    bv = s1 - head_a;
		    s2 = ((head_b - bv) + (head_a - (s1 - bv)));

		    /* Add two lo words. */
		    t1 = tail_a + tail_b;
		    bv = t1 - tail_a;
		    t2 = ((tail_b - bv) + (tail_a - (t1 - bv)));

		    s2 += t1;

		    /* Renormalize (s1, s2)  to  (t1, s2) */
		    t1 = s1 + s2;
		    s2 = s2 - (t1 - s1);

		    t2 += s2;

		    /* Renormalize (t1, t2)  */
		    head_t = t1 + t2;
		    tail_t = t2 - (head_t - t1);
		  }
		  head_sum[1] = head_t;
		  tail_sum[1] = tail_t;
		}
	      }
	      y_elem[0] = y_i[yi];
	      y_elem[1] = y_i[yi + 1];
	      {
		double head_e1, tail_e1;
		double d1;
		double d2;
		/* Real part */
		d1 = (double) y_elem[0] * beta_i[0];
		d2 = (double) -y_elem[1] * beta_i[1];
		{
		  /* Compute double-double = double + double. */
		  double e, t1, t2;

		  /* Knuth trick. */
		  t1 = d1 + d2;
		  e = t1 - d1;
		  t2 = ((d2 - e) + (d1 - (t1 - e)));

		  /* The result is t1 + t2, after normalization. */
		  head_e1 = t1 + t2;
		  tail_e1 = t2 - (head_e1 - t1);
		}
		head_tmp2[0] = head_e1;
		tail_tmp2[0] = tail_e1;
		/* imaginary part */
		d1 = (double) y_elem[0] * beta_i[1];
		d2 = (double) y_elem[1] * beta_i[0];
		{
		  /* Compute double-double = double + double. */
		  double e, t1, t2;

		  /* Knuth trick. */
		  t1 = d1 + d2;
		  e = t1 - d1;
		  t2 = ((d2 - e) + (d1 - (t1 - e)));

		  /* The result is t1 + t2, after normalization. */
		  head_e1 = t1 + t2;
		  tail_e1 = t2 - (head_e1 - t1);
		}
		head_tmp2[1] = head_e1;
		tail_tmp2[1] = tail_e1;
	      }
	      {
		double cd[2];
		cd[0] = (double) alpha_i[0];
		cd[1] = (double) alpha_i[1];
		{
		  /* Compute complex-extra = complex-extra * complex-double. */
		  double head_a0, tail_a0;
		  double head_a1, tail_a1;
		  double head_t1, tail_t1;
		  double head_t2, tail_t2;
		  head_a0 = head_sum[0];
		  tail_a0 = tail_sum[0];
		  head_a1 = head_sum[1];
		  tail_a1 = tail_sum[1];
		  /* real part */
		  {
		    /* Compute double-double = double-double * double. */
		    double a11, a21, b1, b2, c11, c21, c2, con, t1, t2;

		    con = head_a0 * split;
		    a11 = con - head_a0;
		    a11 = con - a11;
		    a21 = head_a0 - a11;
		    con = cd[0] * split;
		    b1 = con - cd[0];
		    b1 = con - b1;
		    b2 = cd[0] - b1;

		    c11 = head_a0 * cd[0];
		    c21 =
		      (((a11 * b1 - c11) + a11 * b2) + a21 * b1) + a21 * b2;

		    c2 = tail_a0 * cd[0];
		    t1 = c11 + c2;
		    t2 = (c2 - (t1 - c11)) + c21;

		    head_t1 = t1 + t2;
		    tail_t1 = t2 - (head_t1 - t1);
		  }
		  {
		    /* Compute double-double = double-double * double. */
		    double a11, a21, b1, b2, c11, c21, c2, con, t1, t2;

		    con = head_a1 * split;
		    a11 = con - head_a1;
		    a11 = con - a11;
		    a21 = head_a1 - a11;
		    con = cd[1] * split;
		    b1 = con - cd[1];
		    b1 = con - b1;
		    b2 = cd[1] - b1;

		    c11 = head_a1 * cd[1];
		    c21 =
		      (((a11 * b1 - c11) + a11 * b2) + a21 * b1) + a21 * b2;

		    c2 = tail_a1 * cd[1];
		    t1 = c11 + c2;
		    t2 = (c2 - (t1 - c11)) + c21;

		    head_t2 = t1 + t2;
		    tail_t2 = t2 - (head_t2 - t1);
		  }
		  head_t2 = -head_t2;
		  tail_t2 = -tail_t2;
		  {
		    /* Compute double-double = double-double + double-double. */
		    double bv;
		    double s1, s2, t1, t2;

		    /* Add two hi words. */
		    s1 = head_t1 + head_t2;
		    bv = s1 - head_t1;
		    s2 = ((head_t2 - bv) + (head_t1 - (s1 - bv)));

		    /* Add two lo words. */
		    t1 = tail_t1 + tail_t2;
		    bv = t1 - tail_t1;
		    t2 = ((tail_t2 - bv) + (tail_t1 - (t1 - bv)));

		    s2 += t1;

		    /* Renormalize (s1, s2)  to  (t1, s2) */
		    t1 = s1 + s2;
		    s2 = s2 - (t1 - s1);

		    t2 += s2;

		    /* Renormalize (t1, t2)  */
		    head_t1 = t1 + t2;
		    tail_t1 = t2 - (head_t1 - t1);
		  }
		  head_tmp1[0] = head_t1;
		  tail_tmp1[0] = tail_t1;
		  /* imaginary part */
		  {
		    /* Compute double-double = double-double * double. */
		    double a11, a21, b1, b2, c11, c21, c2, con, t1, t2;

		    con = head_a1 * split;
		    a11 = con - head_a1;
		    a11 = con - a11;
		    a21 = head_a1 - a11;
		    con = cd[0] * split;
		    b1 = con - cd[0];
		    b1 = con - b1;
		    b2 = cd[0] - b1;

		    c11 = head_a1 * cd[0];
		    c21 =
		      (((a11 * b1 - c11) + a11 * b2) + a21 * b1) + a21 * b2;

		    c2 = tail_a1 * cd[0];
		    t1 = c11 + c2;
		    t2 = (c2 - (t1 - c11)) + c21;

		    head_t1 = t1 + t2;
		    tail_t1 = t2 - (head_t1 - t1);
		  }
		  {
		    /* Compute double-double = double-double * double. */
		    double a11, a21, b1, b2, c11, c21, c2, con, t1, t2;

		    con = head_a0 * split;
		    a11 = con - head_a0;
		    a11 = con - a11;
		    a21 = head_a0 - a11;
		    con = cd[1] * split;
		    b1 = con - cd[1];
		    b1 = con - b1;
		    b2 = cd[1] - b1;

		    c11 = head_a0 * cd[1];
		    c21 =
		      (((a11 * b1 - c11) + a11 * b2) + a21 * b1) + a21 * b2;

		    c2 = tail_a0 * cd[1];
		    t1 = c11 + c2;
		    t2 = (c2 - (t1 - c11)) + c21;

		    head_t2 = t1 + t2;
		    tail_t2 = t2 - (head_t2 - t1);
		  }
		  {
		    /* Compute double-double = double-double + double-double. */
		    double bv;
		    double s1, s2, t1, t2;

		    /* Add two hi words. */
		    s1 = head_t1 + head_t2;
		    bv = s1 - head_t1;
		    s2 = ((head_t2 - bv) + (head_t1 - (s1 - bv)));

		    /* Add two lo words. */
		    t1 = tail_t1 + tail_t2;
		    bv = t1 - tail_t1;
		    t2 = ((tail_t2 - bv) + (tail_t1 - (t1 - bv)));

		    s2 += t1;

		    /* Renormalize (s1, s2)  to  (t1, s2) */
		    t1 = s1 + s2;
		    s2 = s2 - (t1 - s1);

		    t2 += s2;

		    /* Renormalize (t1, t2)  */
		    head_t1 = t1 + t2;
		    tail_t1 = t2 - (head_t1 - t1);
		  }
		  head_tmp1[1] = head_t1;
		  tail_tmp1[1] = tail_t1;
		}

	      }
	      {
		double head_t, tail_t;
		double head_a, tail_a;
		double head_b, tail_b;
		/* Real part */
		head_a = head_tmp2[0];
		tail_a = tail_tmp2[0];
		head_b = head_tmp1[0];
		tail_b = tail_tmp1[0];
		{
		  /* Compute double-double = double-double + double-double. */
		  double bv;
		  double s1, s2, t1, t2;

		  /* Add two hi words. */
		  s1 = head_a + head_b;
		  bv = s1 - head_a;
		  s2 = ((head_b - bv) + (head_a - (s1 - bv)));

		  /* Add two lo words. */
		  t1 = tail_a + tail_b;
		  bv = t1 - tail_a;
		  t2 = ((tail_b - bv) + (tail_a - (t1 - bv)));

		  s2 += t1;

		  /* Renormalize (s1, s2)  to  (t1, s2) */
		  t1 = s1 + s2;
		  s2 = s2 - (t1 - s1);

		  t2 += s2;

		  /* Renormalize (t1, t2)  */
		  head_t = t1 + t2;
		  tail_t = t2 - (head_t - t1);
		}
		head_tmp1[0] = head_t;
		tail_tmp1[0] = tail_t;
		/* Imaginary part */
		head_a = head_tmp2[1];
		tail_a = tail_tmp2[1];
		head_b = head_tmp1[1];
		tail_b = tail_tmp1[1];
		{
		  /* Compute double-double = double-double + double-double. */
		  double bv;
		  double s1, s2, t1, t2;

		  /* Add two hi words. */
		  s1 = head_a + head_b;
		  bv = s1 - head_a;
		  s2 = ((head_b - bv) + (head_a - (s1 - bv)));

		  /* Add two lo words. */
		  t1 = tail_a + tail_b;
		  bv = t1 - tail_a;
		  t2 = ((tail_b - bv) + (tail_a - (t1 - bv)));

		  s2 += t1;

		  /* Renormalize (s1, s2)  to  (t1, s2) */
		  t1 = s1 + s2;
		  s2 = s2 - (t1 - s1);

		  t2 += s2;

		  /* Renormalize (t1, t2)  */
		  head_t = t1 + t2;
		  tail_t = t2 - (head_t - t1);
		}
		head_tmp1[1] = head_t;
		tail_tmp1[1] = tail_t;
	      }
	      y_i[yi] = head_tmp1[0];
	      y_i[yi + 1] = head_tmp1[1];
	    }
	  }
	} else {
	  /*  conjugate first loop */

	  /* Case alpha == 1. */
	  if ((alpha_i[0] == 1.0 && alpha_i[1] == 0.0)) {

	    if (beta_i[0] == 0.0 && beta_i[1] == 0.0) {
	      /* Case alpha = 1, beta = 0.  We compute  y <--- A * x */
	      for (i = 0, yi = y_starti, astarti = 0;
		   i < n_i; i++, yi += incy, astarti += incaik2) {
		head_sum[0] = head_sum[1] = tail_sum[0] = tail_sum[1] = 0.0;
		for (k = 0, aik = astarti, xi = x_starti;
		     k < i; k++, aik += incaik, xi += incx) {
		  a_elem[0] = a_i[aik];
		  a_elem[1] = a_i[aik + 1];
		  a_elem[1] = -a_elem[1];
		  x_elem[0] = x_i[xi];
		  x_elem[1] = x_i[xi + 1];
		  {
		    double head_e1, tail_e1;
		    double d1;
		    double d2;
		    /* Real part */
		    d1 = (double) a_elem[0] * x_elem[0];
		    d2 = (double) -a_elem[1] * x_elem[1];
		    {
		      /* Compute double-double = double + double. */
		      double e, t1, t2;

		      /* Knuth trick. */
		      t1 = d1 + d2;
		      e = t1 - d1;
		      t2 = ((d2 - e) + (d1 - (t1 - e)));

		      /* The result is t1 + t2, after normalization. */
		      head_e1 = t1 + t2;
		      tail_e1 = t2 - (head_e1 - t1);
		    }
		    head_prod[0] = head_e1;
		    tail_prod[0] = tail_e1;
		    /* imaginary part */
		    d1 = (double) a_elem[0] * x_elem[1];
		    d2 = (double) a_elem[1] * x_elem[0];
		    {
		      /* Compute double-double = double + double. */
		      double e, t1, t2;

		      /* Knuth trick. */
		      t1 = d1 + d2;
		      e = t1 - d1;
		      t2 = ((d2 - e) + (d1 - (t1 - e)));

		      /* The result is t1 + t2, after normalization. */
		      head_e1 = t1 + t2;
		      tail_e1 = t2 - (head_e1 - t1);
		    }
		    head_prod[1] = head_e1;
		    tail_prod[1] = tail_e1;
		  }
		  {
		    double head_t, tail_t;
		    double head_a, tail_a;
		    double head_b, tail_b;
		    /* Real part */
		    head_a = head_sum[0];
		    tail_a = tail_sum[0];
		    head_b = head_prod[0];
		    tail_b = tail_prod[0];
		    {
		      /* Compute double-double = double-double + double-double. */
		      double bv;
		      double s1, s2, t1, t2;

		      /* Add two hi words. */
		      s1 = head_a + head_b;
		      bv = s1 - head_a;
		      s2 = ((head_b - bv) + (head_a - (s1 - bv)));

		      /* Add two lo words. */
		      t1 = tail_a + tail_b;
		      bv = t1 - tail_a;
		      t2 = ((tail_b - bv) + (tail_a - (t1 - bv)));

		      s2 += t1;

		      /* Renormalize (s1, s2)  to  (t1, s2) */
		      t1 = s1 + s2;
		      s2 = s2 - (t1 - s1);

		      t2 += s2;

		      /* Renormalize (t1, t2)  */
		      head_t = t1 + t2;
		      tail_t = t2 - (head_t - t1);
		    }
		    head_sum[0] = head_t;
		    tail_sum[0] = tail_t;
		    /* Imaginary part */
		    head_a = head_sum[1];
		    tail_a = tail_sum[1];
		    head_b = head_prod[1];
		    tail_b = tail_prod[1];
		    {
		      /* Compute double-double = double-double + double-double. */
		      double bv;
		      double s1, s2, t1, t2;

		      /* Add two hi words. */
		      s1 = head_a + head_b;
		      bv = s1 - head_a;
		      s2 = ((head_b - bv) + (head_a - (s1 - bv)));

		      /* Add two lo words. */
		      t1 = tail_a + tail_b;
		      bv = t1 - tail_a;
		      t2 = ((tail_b - bv) + (tail_a - (t1 - bv)));

		      s2 += t1;

		      /* Renormalize (s1, s2)  to  (t1, s2) */
		      t1 = s1 + s2;
		      s2 = s2 - (t1 - s1);

		      t2 += s2;

		      /* Renormalize (t1, t2)  */
		      head_t = t1 + t2;
		      tail_t = t2 - (head_t - t1);
		    }
		    head_sum[1] = head_t;
		    tail_sum[1] = tail_t;
		  }
		}
		a_elem[0] = a_i[aik];
		x_elem[0] = x_i[xi];
		x_elem[1] = x_i[xi + 1];
		{
		  head_prod[0] = (double) x_elem[0] * a_elem[0];
		  tail_prod[0] = 0.0;
		  head_prod[1] = (double) x_elem[1] * a_elem[0];
		  tail_prod[1] = 0.0;
		}
		{
		  double head_t, tail_t;
		  double head_a, tail_a;
		  double head_b, tail_b;
		  /* Real part */
		  head_a = head_sum[0];
		  tail_a = tail_sum[0];
		  head_b = head_prod[0];
		  tail_b = tail_prod[0];
		  {
		    /* Compute double-double = double-double + double-double. */
		    double bv;
		    double s1, s2, t1, t2;

		    /* Add two hi words. */
		    s1 = head_a + head_b;
		    bv = s1 - head_a;
		    s2 = ((head_b - bv) + (head_a - (s1 - bv)));

		    /* Add two lo words. */
		    t1 = tail_a + tail_b;
		    bv = t1 - tail_a;
		    t2 = ((tail_b - bv) + (tail_a - (t1 - bv)));

		    s2 += t1;

		    /* Renormalize (s1, s2)  to  (t1, s2) */
		    t1 = s1 + s2;
		    s2 = s2 - (t1 - s1);

		    t2 += s2;

		    /* Renormalize (t1, t2)  */
		    head_t = t1 + t2;
		    tail_t = t2 - (head_t - t1);
		  }
		  head_sum[0] = head_t;
		  tail_sum[0] = tail_t;
		  /* Imaginary part */
		  head_a = head_sum[1];
		  tail_a = tail_sum[1];
		  head_b = head_prod[1];
		  tail_b = tail_prod[1];
		  {
		    /* Compute double-double = double-double + double-double. */
		    double bv;
		    double s1, s2, t1, t2;

		    /* Add two hi words. */
		    s1 = head_a + head_b;
		    bv = s1 - head_a;
		    s2 = ((head_b - bv) + (head_a - (s1 - bv)));

		    /* Add two lo words. */
		    t1 = tail_a + tail_b;
		    bv = t1 - tail_a;
		    t2 = ((tail_b - bv) + (tail_a - (t1 - bv)));

		    s2 += t1;

		    /* Renormalize (s1, s2)  to  (t1, s2) */
		    t1 = s1 + s2;
		    s2 = s2 - (t1 - s1);

		    t2 += s2;

		    /* Renormalize (t1, t2)  */
		    head_t = t1 + t2;
		    tail_t = t2 - (head_t - t1);
		  }
		  head_sum[1] = head_t;
		  tail_sum[1] = tail_t;
		}
		k++;
		aik += incaik2;
		xi += incx;
		for (; k < n_i; k++, aik += incaik2, xi += incx) {
		  a_elem[0] = a_i[aik];
		  a_elem[1] = a_i[aik + 1];

		  x_elem[0] = x_i[xi];
		  x_elem[1] = x_i[xi + 1];
		  {
		    double head_e1, tail_e1;
		    double d1;
		    double d2;
		    /* Real part */
		    d1 = (double) a_elem[0] * x_elem[0];
		    d2 = (double) -a_elem[1] * x_elem[1];
		    {
		      /* Compute double-double = double + double. */
		      double e, t1, t2;

		      /* Knuth trick. */
		      t1 = d1 + d2;
		      e = t1 - d1;
		      t2 = ((d2 - e) + (d1 - (t1 - e)));

		      /* The result is t1 + t2, after normalization. */
		      head_e1 = t1 + t2;
		      tail_e1 = t2 - (head_e1 - t1);
		    }
		    head_prod[0] = head_e1;
		    tail_prod[0] = tail_e1;
		    /* imaginary part */
		    d1 = (double) a_elem[0] * x_elem[1];
		    d2 = (double) a_elem[1] * x_elem[0];
		    {
		      /* Compute double-double = double + double. */
		      double e, t1, t2;

		      /* Knuth trick. */
		      t1 = d1 + d2;
		      e = t1 - d1;
		      t2 = ((d2 - e) + (d1 - (t1 - e)));

		      /* The result is t1 + t2, after normalization. */
		      head_e1 = t1 + t2;
		      tail_e1 = t2 - (head_e1 - t1);
		    }
		    head_prod[1] = head_e1;
		    tail_prod[1] = tail_e1;
		  }
		  {
		    double head_t, tail_t;
		    double head_a, tail_a;
		    double head_b, tail_b;
		    /* Real part */
		    head_a = head_sum[0];
		    tail_a = tail_sum[0];
		    head_b = head_prod[0];
		    tail_b = tail_prod[0];
		    {
		      /* Compute double-double = double-double + double-double. */
		      double bv;
		      double s1, s2, t1, t2;

		      /* Add two hi words. */
		      s1 = head_a + head_b;
		      bv = s1 - head_a;
		      s2 = ((head_b - bv) + (head_a - (s1 - bv)));

		      /* Add two lo words. */
		      t1 = tail_a + tail_b;
		      bv = t1 - tail_a;
		      t2 = ((tail_b - bv) + (tail_a - (t1 - bv)));

		      s2 += t1;

		      /* Renormalize (s1, s2)  to  (t1, s2) */
		      t1 = s1 + s2;
		      s2 = s2 - (t1 - s1);

		      t2 += s2;

		      /* Renormalize (t1, t2)  */
		      head_t = t1 + t2;
		      tail_t = t2 - (head_t - t1);
		    }
		    head_sum[0] = head_t;
		    tail_sum[0] = tail_t;
		    /* Imaginary part */
		    head_a = head_sum[1];
		    tail_a = tail_sum[1];
		    head_b = head_prod[1];
		    tail_b = tail_prod[1];
		    {
		      /* Compute double-double = double-double + double-double. */
		      double bv;
		      double s1, s2, t1, t2;

		      /* Add two hi words. */
		      s1 = head_a + head_b;
		      bv = s1 - head_a;
		      s2 = ((head_b - bv) + (head_a - (s1 - bv)));

		      /* Add two lo words. */
		      t1 = tail_a + tail_b;
		      bv = t1 - tail_a;
		      t2 = ((tail_b - bv) + (tail_a - (t1 - bv)));

		      s2 += t1;

		      /* Renormalize (s1, s2)  to  (t1, s2) */
		      t1 = s1 + s2;
		      s2 = s2 - (t1 - s1);

		      t2 += s2;

		      /* Renormalize (t1, t2)  */
		      head_t = t1 + t2;
		      tail_t = t2 - (head_t - t1);
		    }
		    head_sum[1] = head_t;
		    tail_sum[1] = tail_t;
		  }
		}
		y_i[yi] = head_sum[0];
		y_i[yi + 1] = head_sum[1];
	      }
	    } else {
	      /* Case alpha = 1, but beta != 0. 
	         We compute  y  <--- A * x + beta * y */
	      for (i = 0, yi = y_starti, astarti = 0;
		   i < n_i; i++, yi += incy, astarti += incaik2) {
		head_sum[0] = head_sum[1] = tail_sum[0] = tail_sum[1] = 0.0;

		for (k = 0, aik = astarti, xi = x_starti;
		     k < i; k++, aik += incaik, xi += incx) {
		  a_elem[0] = a_i[aik];
		  a_elem[1] = a_i[aik + 1];
		  a_elem[1] = -a_elem[1];
		  x_elem[0] = x_i[xi];
		  x_elem[1] = x_i[xi + 1];
		  {
		    double head_e1, tail_e1;
		    double d1;
		    double d2;
		    /* Real part */
		    d1 = (double) a_elem[0] * x_elem[0];
		    d2 = (double) -a_elem[1] * x_elem[1];
		    {
		      /* Compute double-double = double + double. */
		      double e, t1, t2;

		      /* Knuth trick. */
		      t1 = d1 + d2;
		      e = t1 - d1;
		      t2 = ((d2 - e) + (d1 - (t1 - e)));

		      /* The result is t1 + t2, after normalization. */
		      head_e1 = t1 + t2;
		      tail_e1 = t2 - (head_e1 - t1);
		    }
		    head_prod[0] = head_e1;
		    tail_prod[0] = tail_e1;
		    /* imaginary part */
		    d1 = (double) a_elem[0] * x_elem[1];
		    d2 = (double) a_elem[1] * x_elem[0];
		    {
		      /* Compute double-double = double + double. */
		      double e, t1, t2;

		      /* Knuth trick. */
		      t1 = d1 + d2;
		      e = t1 - d1;
		      t2 = ((d2 - e) + (d1 - (t1 - e)));

		      /* The result is t1 + t2, after normalization. */
		      head_e1 = t1 + t2;
		      tail_e1 = t2 - (head_e1 - t1);
		    }
		    head_prod[1] = head_e1;
		    tail_prod[1] = tail_e1;
		  }
		  {
		    double head_t, tail_t;
		    double head_a, tail_a;
		    double head_b, tail_b;
		    /* Real part */
		    head_a = head_sum[0];
		    tail_a = tail_sum[0];
		    head_b = head_prod[0];
		    tail_b = tail_prod[0];
		    {
		      /* Compute double-double = double-double + double-double. */
		      double bv;
		      double s1, s2, t1, t2;

		      /* Add two hi words. */
		      s1 = head_a + head_b;
		      bv = s1 - head_a;
		      s2 = ((head_b - bv) + (head_a - (s1 - bv)));

		      /* Add two lo words. */
		      t1 = tail_a + tail_b;
		      bv = t1 - tail_a;
		      t2 = ((tail_b - bv) + (tail_a - (t1 - bv)));

		      s2 += t1;

		      /* Renormalize (s1, s2)  to  (t1, s2) */
		      t1 = s1 + s2;
		      s2 = s2 - (t1 - s1);

		      t2 += s2;

		      /* Renormalize (t1, t2)  */
		      head_t = t1 + t2;
		      tail_t = t2 - (head_t - t1);
		    }
		    head_sum[0] = head_t;
		    tail_sum[0] = tail_t;
		    /* Imaginary part */
		    head_a = head_sum[1];
		    tail_a = tail_sum[1];
		    head_b = head_prod[1];
		    tail_b = tail_prod[1];
		    {
		      /* Compute double-double = double-double + double-double. */
		      double bv;
		      double s1, s2, t1, t2;

		      /* Add two hi words. */
		      s1 = head_a + head_b;
		      bv = s1 - head_a;
		      s2 = ((head_b - bv) + (head_a - (s1 - bv)));

		      /* Add two lo words. */
		      t1 = tail_a + tail_b;
		      bv = t1 - tail_a;
		      t2 = ((tail_b - bv) + (tail_a - (t1 - bv)));

		      s2 += t1;

		      /* Renormalize (s1, s2)  to  (t1, s2) */
		      t1 = s1 + s2;
		      s2 = s2 - (t1 - s1);

		      t2 += s2;

		      /* Renormalize (t1, t2)  */
		      head_t = t1 + t2;
		      tail_t = t2 - (head_t - t1);
		    }
		    head_sum[1] = head_t;
		    tail_sum[1] = tail_t;
		  }
		}
		a_elem[0] = a_i[aik];
		x_elem[0] = x_i[xi];
		x_elem[1] = x_i[xi + 1];
		{
		  head_prod[0] = (double) x_elem[0] * a_elem[0];
		  tail_prod[0] = 0.0;
		  head_prod[1] = (double) x_elem[1] * a_elem[0];
		  tail_prod[1] = 0.0;
		}
		{
		  double head_t, tail_t;
		  double head_a, tail_a;
		  double head_b, tail_b;
		  /* Real part */
		  head_a = head_sum[0];
		  tail_a = tail_sum[0];
		  head_b = head_prod[0];
		  tail_b = tail_prod[0];
		  {
		    /* Compute double-double = double-double + double-double. */
		    double bv;
		    double s1, s2, t1, t2;

		    /* Add two hi words. */
		    s1 = head_a + head_b;
		    bv = s1 - head_a;
		    s2 = ((head_b - bv) + (head_a - (s1 - bv)));

		    /* Add two lo words. */
		    t1 = tail_a + tail_b;
		    bv = t1 - tail_a;
		    t2 = ((tail_b - bv) + (tail_a - (t1 - bv)));

		    s2 += t1;

		    /* Renormalize (s1, s2)  to  (t1, s2) */
		    t1 = s1 + s2;
		    s2 = s2 - (t1 - s1);

		    t2 += s2;

		    /* Renormalize (t1, t2)  */
		    head_t = t1 + t2;
		    tail_t = t2 - (head_t - t1);
		  }
		  head_sum[0] = head_t;
		  tail_sum[0] = tail_t;
		  /* Imaginary part */
		  head_a = head_sum[1];
		  tail_a = tail_sum[1];
		  head_b = head_prod[1];
		  tail_b = tail_prod[1];
		  {
		    /* Compute double-double = double-double + double-double. */
		    double bv;
		    double s1, s2, t1, t2;

		    /* Add two hi words. */
		    s1 = head_a + head_b;
		    bv = s1 - head_a;
		    s2 = ((head_b - bv) + (head_a - (s1 - bv)));

		    /* Add two lo words. */
		    t1 = tail_a + tail_b;
		    bv = t1 - tail_a;
		    t2 = ((tail_b - bv) + (tail_a - (t1 - bv)));

		    s2 += t1;

		    /* Renormalize (s1, s2)  to  (t1, s2) */
		    t1 = s1 + s2;
		    s2 = s2 - (t1 - s1);

		    t2 += s2;

		    /* Renormalize (t1, t2)  */
		    head_t = t1 + t2;
		    tail_t = t2 - (head_t - t1);
		  }
		  head_sum[1] = head_t;
		  tail_sum[1] = tail_t;
		}
		k++;
		aik += incaik2;
		xi += incx;
		for (; k < n_i; k++, aik += incaik2, xi += incx) {
		  a_elem[0] = a_i[aik];
		  a_elem[1] = a_i[aik + 1];

		  x_elem[0] = x_i[xi];
		  x_elem[1] = x_i[xi + 1];
		  {
		    double head_e1, tail_e1;
		    double d1;
		    double d2;
		    /* Real part */
		    d1 = (double) a_elem[0] * x_elem[0];
		    d2 = (double) -a_elem[1] * x_elem[1];
		    {
		      /* Compute double-double = double + double. */
		      double e, t1, t2;

		      /* Knuth trick. */
		      t1 = d1 + d2;
		      e = t1 - d1;
		      t2 = ((d2 - e) + (d1 - (t1 - e)));

		      /* The result is t1 + t2, after normalization. */
		      head_e1 = t1 + t2;
		      tail_e1 = t2 - (head_e1 - t1);
		    }
		    head_prod[0] = head_e1;
		    tail_prod[0] = tail_e1;
		    /* imaginary part */
		    d1 = (double) a_elem[0] * x_elem[1];
		    d2 = (double) a_elem[1] * x_elem[0];
		    {
		      /* Compute double-double = double + double. */
		      double e, t1, t2;

		      /* Knuth trick. */
		      t1 = d1 + d2;
		      e = t1 - d1;
		      t2 = ((d2 - e) + (d1 - (t1 - e)));

		      /* The result is t1 + t2, after normalization. */
		      head_e1 = t1 + t2;
		      tail_e1 = t2 - (head_e1 - t1);
		    }
		    head_prod[1] = head_e1;
		    tail_prod[1] = tail_e1;
		  }
		  {
		    double head_t, tail_t;
		    double head_a, tail_a;
		    double head_b, tail_b;
		    /* Real part */
		    head_a = head_sum[0];
		    tail_a = tail_sum[0];
		    head_b = head_prod[0];
		    tail_b = tail_prod[0];
		    {
		      /* Compute double-double = double-double + double-double. */
		      double bv;
		      double s1, s2, t1, t2;

		      /* Add two hi words. */
		      s1 = head_a + head_b;
		      bv = s1 - head_a;
		      s2 = ((head_b - bv) + (head_a - (s1 - bv)));

		      /* Add two lo words. */
		      t1 = tail_a + tail_b;
		      bv = t1 - tail_a;
		      t2 = ((tail_b - bv) + (tail_a - (t1 - bv)));

		      s2 += t1;

		      /* Renormalize (s1, s2)  to  (t1, s2) */
		      t1 = s1 + s2;
		      s2 = s2 - (t1 - s1);

		      t2 += s2;

		      /* Renormalize (t1, t2)  */
		      head_t = t1 + t2;
		      tail_t = t2 - (head_t - t1);
		    }
		    head_sum[0] = head_t;
		    tail_sum[0] = tail_t;
		    /* Imaginary part */
		    head_a = head_sum[1];
		    tail_a = tail_sum[1];
		    head_b = head_prod[1];
		    tail_b = tail_prod[1];
		    {
		      /* Compute double-double = double-double + double-double. */
		      double bv;
		      double s1, s2, t1, t2;

		      /* Add two hi words. */
		      s1 = head_a + head_b;
		      bv = s1 - head_a;
		      s2 = ((head_b - bv) + (head_a - (s1 - bv)));

		      /* Add two lo words. */
		      t1 = tail_a + tail_b;
		      bv = t1 - tail_a;
		      t2 = ((tail_b - bv) + (tail_a - (t1 - bv)));

		      s2 += t1;

		      /* Renormalize (s1, s2)  to  (t1, s2) */
		      t1 = s1 + s2;
		      s2 = s2 - (t1 - s1);

		      t2 += s2;

		      /* Renormalize (t1, t2)  */
		      head_t = t1 + t2;
		      tail_t = t2 - (head_t - t1);
		    }
		    head_sum[1] = head_t;
		    tail_sum[1] = tail_t;
		  }
		}
		y_elem[0] = y_i[yi];
		y_elem[1] = y_i[yi + 1];
		{
		  double head_e1, tail_e1;
		  double d1;
		  double d2;
		  /* Real part */
		  d1 = (double) y_elem[0] * beta_i[0];
		  d2 = (double) -y_elem[1] * beta_i[1];
		  {
		    /* Compute double-double = double + double. */
		    double e, t1, t2;

		    /* Knuth trick. */
		    t1 = d1 + d2;
		    e = t1 - d1;
		    t2 = ((d2 - e) + (d1 - (t1 - e)));

		    /* The result is t1 + t2, after normalization. */
		    head_e1 = t1 + t2;
		    tail_e1 = t2 - (head_e1 - t1);
		  }
		  head_tmp2[0] = head_e1;
		  tail_tmp2[0] = tail_e1;
		  /* imaginary part */
		  d1 = (double) y_elem[0] * beta_i[1];
		  d2 = (double) y_elem[1] * beta_i[0];
		  {
		    /* Compute double-double = double + double. */
		    double e, t1, t2;

		    /* Knuth trick. */
		    t1 = d1 + d2;
		    e = t1 - d1;
		    t2 = ((d2 - e) + (d1 - (t1 - e)));

		    /* The result is t1 + t2, after normalization. */
		    head_e1 = t1 + t2;
		    tail_e1 = t2 - (head_e1 - t1);
		  }
		  head_tmp2[1] = head_e1;
		  tail_tmp2[1] = tail_e1;
		}
		head_tmp1[0] = head_sum[0];
		tail_tmp1[0] = tail_sum[0];
		head_tmp1[1] = head_sum[1];
		tail_tmp1[1] = tail_sum[1];
		{
		  double head_t, tail_t;
		  double head_a, tail_a;
		  double head_b, tail_b;
		  /* Real part */
		  head_a = head_tmp2[0];
		  tail_a = tail_tmp2[0];
		  head_b = head_tmp1[0];
		  tail_b = tail_tmp1[0];
		  {
		    /* Compute double-double = double-double + double-double. */
		    double bv;
		    double s1, s2, t1, t2;

		    /* Add two hi words. */
		    s1 = head_a + head_b;
		    bv = s1 - head_a;
		    s2 = ((head_b - bv) + (head_a - (s1 - bv)));

		    /* Add two lo words. */
		    t1 = tail_a + tail_b;
		    bv = t1 - tail_a;
		    t2 = ((tail_b - bv) + (tail_a - (t1 - bv)));

		    s2 += t1;

		    /* Renormalize (s1, s2)  to  (t1, s2) */
		    t1 = s1 + s2;
		    s2 = s2 - (t1 - s1);

		    t2 += s2;

		    /* Renormalize (t1, t2)  */
		    head_t = t1 + t2;
		    tail_t = t2 - (head_t - t1);
		  }
		  head_tmp1[0] = head_t;
		  tail_tmp1[0] = tail_t;
		  /* Imaginary part */
		  head_a = head_tmp2[1];
		  tail_a = tail_tmp2[1];
		  head_b = head_tmp1[1];
		  tail_b = tail_tmp1[1];
		  {
		    /* Compute double-double = double-double + double-double. */
		    double bv;
		    double s1, s2, t1, t2;

		    /* Add two hi words. */
		    s1 = head_a + head_b;
		    bv = s1 - head_a;
		    s2 = ((head_b - bv) + (head_a - (s1 - bv)));

		    /* Add two lo words. */
		    t1 = tail_a + tail_b;
		    bv = t1 - tail_a;
		    t2 = ((tail_b - bv) + (tail_a - (t1 - bv)));

		    s2 += t1;

		    /* Renormalize (s1, s2)  to  (t1, s2) */
		    t1 = s1 + s2;
		    s2 = s2 - (t1 - s1);

		    t2 += s2;

		    /* Renormalize (t1, t2)  */
		    head_t = t1 + t2;
		    tail_t = t2 - (head_t - t1);
		  }
		  head_tmp1[1] = head_t;
		  tail_tmp1[1] = tail_t;
		}
		y_i[yi] = head_tmp1[0];
		y_i[yi + 1] = head_tmp1[1];
	      }
	    }
	  } else {
	    /* The most general form,   y <--- alpha * A * x + beta * y */
	    for (i = 0, yi = y_starti, astarti = 0;
		 i < n_i; i++, yi += incy, astarti += incaik2) {
	      head_sum[0] = head_sum[1] = tail_sum[0] = tail_sum[1] = 0.0;

	      for (k = 0, aik = astarti, xi = x_starti;
		   k < i; k++, aik += incaik, xi += incx) {
		a_elem[0] = a_i[aik];
		a_elem[1] = a_i[aik + 1];
		a_elem[1] = -a_elem[1];
		x_elem[0] = x_i[xi];
		x_elem[1] = x_i[xi + 1];
		{
		  double head_e1, tail_e1;
		  double d1;
		  double d2;
		  /* Real part */
		  d1 = (double) a_elem[0] * x_elem[0];
		  d2 = (double) -a_elem[1] * x_elem[1];
		  {
		    /* Compute double-double = double + double. */
		    double e, t1, t2;

		    /* Knuth trick. */
		    t1 = d1 + d2;
		    e = t1 - d1;
		    t2 = ((d2 - e) + (d1 - (t1 - e)));

		    /* The result is t1 + t2, after normalization. */
		    head_e1 = t1 + t2;
		    tail_e1 = t2 - (head_e1 - t1);
		  }
		  head_prod[0] = head_e1;
		  tail_prod[0] = tail_e1;
		  /* imaginary part */
		  d1 = (double) a_elem[0] * x_elem[1];
		  d2 = (double) a_elem[1] * x_elem[0];
		  {
		    /* Compute double-double = double + double. */
		    double e, t1, t2;

		    /* Knuth trick. */
		    t1 = d1 + d2;
		    e = t1 - d1;
		    t2 = ((d2 - e) + (d1 - (t1 - e)));

		    /* The result is t1 + t2, after normalization. */
		    head_e1 = t1 + t2;
		    tail_e1 = t2 - (head_e1 - t1);
		  }
		  head_prod[1] = head_e1;
		  tail_prod[1] = tail_e1;
		}
		{
		  double head_t, tail_t;
		  double head_a, tail_a;
		  double head_b, tail_b;
		  /* Real part */
		  head_a = head_sum[0];
		  tail_a = tail_sum[0];
		  head_b = head_prod[0];
		  tail_b = tail_prod[0];
		  {
		    /* Compute double-double = double-double + double-double. */
		    double bv;
		    double s1, s2, t1, t2;

		    /* Add two hi words. */
		    s1 = head_a + head_b;
		    bv = s1 - head_a;
		    s2 = ((head_b - bv) + (head_a - (s1 - bv)));

		    /* Add two lo words. */
		    t1 = tail_a + tail_b;
		    bv = t1 - tail_a;
		    t2 = ((tail_b - bv) + (tail_a - (t1 - bv)));

		    s2 += t1;

		    /* Renormalize (s1, s2)  to  (t1, s2) */
		    t1 = s1 + s2;
		    s2 = s2 - (t1 - s1);

		    t2 += s2;

		    /* Renormalize (t1, t2)  */
		    head_t = t1 + t2;
		    tail_t = t2 - (head_t - t1);
		  }
		  head_sum[0] = head_t;
		  tail_sum[0] = tail_t;
		  /* Imaginary part */
		  head_a = head_sum[1];
		  tail_a = tail_sum[1];
		  head_b = head_prod[1];
		  tail_b = tail_prod[1];
		  {
		    /* Compute double-double = double-double + double-double. */
		    double bv;
		    double s1, s2, t1, t2;

		    /* Add two hi words. */
		    s1 = head_a + head_b;
		    bv = s1 - head_a;
		    s2 = ((head_b - bv) + (head_a - (s1 - bv)));

		    /* Add two lo words. */
		    t1 = tail_a + tail_b;
		    bv = t1 - tail_a;
		    t2 = ((tail_b - bv) + (tail_a - (t1 - bv)));

		    s2 += t1;

		    /* Renormalize (s1, s2)  to  (t1, s2) */
		    t1 = s1 + s2;
		    s2 = s2 - (t1 - s1);

		    t2 += s2;

		    /* Renormalize (t1, t2)  */
		    head_t = t1 + t2;
		    tail_t = t2 - (head_t - t1);
		  }
		  head_sum[1] = head_t;
		  tail_sum[1] = tail_t;
		}
	      }
	      a_elem[0] = a_i[aik];
	      x_elem[0] = x_i[xi];
	      x_elem[1] = x_i[xi + 1];
	      {
		head_prod[0] = (double) x_elem[0] * a_elem[0];
		tail_prod[0] = 0.0;
		head_prod[1] = (double) x_elem[1] * a_elem[0];
		tail_prod[1] = 0.0;
	      }
	      {
		double head_t, tail_t;
		double head_a, tail_a;
		double head_b, tail_b;
		/* Real part */
		head_a = head_sum[0];
		tail_a = tail_sum[0];
		head_b = head_prod[0];
		tail_b = tail_prod[0];
		{
		  /* Compute double-double = double-double + double-double. */
		  double bv;
		  double s1, s2, t1, t2;

		  /* Add two hi words. */
		  s1 = head_a + head_b;
		  bv = s1 - head_a;
		  s2 = ((head_b - bv) + (head_a - (s1 - bv)));

		  /* Add two lo words. */
		  t1 = tail_a + tail_b;
		  bv = t1 - tail_a;
		  t2 = ((tail_b - bv) + (tail_a - (t1 - bv)));

		  s2 += t1;

		  /* Renormalize (s1, s2)  to  (t1, s2) */
		  t1 = s1 + s2;
		  s2 = s2 - (t1 - s1);

		  t2 += s2;

		  /* Renormalize (t1, t2)  */
		  head_t = t1 + t2;
		  tail_t = t2 - (head_t - t1);
		}
		head_sum[0] = head_t;
		tail_sum[0] = tail_t;
		/* Imaginary part */
		head_a = head_sum[1];
		tail_a = tail_sum[1];
		head_b = head_prod[1];
		tail_b = tail_prod[1];
		{
		  /* Compute double-double = double-double + double-double. */
		  double bv;
		  double s1, s2, t1, t2;

		  /* Add two hi words. */
		  s1 = head_a + head_b;
		  bv = s1 - head_a;
		  s2 = ((head_b - bv) + (head_a - (s1 - bv)));

		  /* Add two lo words. */
		  t1 = tail_a + tail_b;
		  bv = t1 - tail_a;
		  t2 = ((tail_b - bv) + (tail_a - (t1 - bv)));

		  s2 += t1;

		  /* Renormalize (s1, s2)  to  (t1, s2) */
		  t1 = s1 + s2;
		  s2 = s2 - (t1 - s1);

		  t2 += s2;

		  /* Renormalize (t1, t2)  */
		  head_t = t1 + t2;
		  tail_t = t2 - (head_t - t1);
		}
		head_sum[1] = head_t;
		tail_sum[1] = tail_t;
	      }
	      k++;
	      aik += incaik2;
	      xi += incx;
	      for (; k < n_i; k++, aik += incaik2, xi += incx) {
		a_elem[0] = a_i[aik];
		a_elem[1] = a_i[aik + 1];

		x_elem[0] = x_i[xi];
		x_elem[1] = x_i[xi + 1];
		{
		  double head_e1, tail_e1;
		  double d1;
		  double d2;
		  /* Real part */
		  d1 = (double) a_elem[0] * x_elem[0];
		  d2 = (double) -a_elem[1] * x_elem[1];
		  {
		    /* Compute double-double = double + double. */
		    double e, t1, t2;

		    /* Knuth trick. */
		    t1 = d1 + d2;
		    e = t1 - d1;
		    t2 = ((d2 - e) + (d1 - (t1 - e)));

		    /* The result is t1 + t2, after normalization. */
		    head_e1 = t1 + t2;
		    tail_e1 = t2 - (head_e1 - t1);
		  }
		  head_prod[0] = head_e1;
		  tail_prod[0] = tail_e1;
		  /* imaginary part */
		  d1 = (double) a_elem[0] * x_elem[1];
		  d2 = (double) a_elem[1] * x_elem[0];
		  {
		    /* Compute double-double = double + double. */
		    double e, t1, t2;

		    /* Knuth trick. */
		    t1 = d1 + d2;
		    e = t1 - d1;
		    t2 = ((d2 - e) + (d1 - (t1 - e)));

		    /* The result is t1 + t2, after normalization. */
		    head_e1 = t1 + t2;
		    tail_e1 = t2 - (head_e1 - t1);
		  }
		  head_prod[1] = head_e1;
		  tail_prod[1] = tail_e1;
		}
		{
		  double head_t, tail_t;
		  double head_a, tail_a;
		  double head_b, tail_b;
		  /* Real part */
		  head_a = head_sum[0];
		  tail_a = tail_sum[0];
		  head_b = head_prod[0];
		  tail_b = tail_prod[0];
		  {
		    /* Compute double-double = double-double + double-double. */
		    double bv;
		    double s1, s2, t1, t2;

		    /* Add two hi words. */
		    s1 = head_a + head_b;
		    bv = s1 - head_a;
		    s2 = ((head_b - bv) + (head_a - (s1 - bv)));

		    /* Add two lo words. */
		    t1 = tail_a + tail_b;
		    bv = t1 - tail_a;
		    t2 = ((tail_b - bv) + (tail_a - (t1 - bv)));

		    s2 += t1;

		    /* Renormalize (s1, s2)  to  (t1, s2) */
		    t1 = s1 + s2;
		    s2 = s2 - (t1 - s1);

		    t2 += s2;

		    /* Renormalize (t1, t2)  */
		    head_t = t1 + t2;
		    tail_t = t2 - (head_t - t1);
		  }
		  head_sum[0] = head_t;
		  tail_sum[0] = tail_t;
		  /* Imaginary part */
		  head_a = head_sum[1];
		  tail_a = tail_sum[1];
		  head_b = head_prod[1];
		  tail_b = tail_prod[1];
		  {
		    /* Compute double-double = double-double + double-double. */
		    double bv;
		    double s1, s2, t1, t2;

		    /* Add two hi words. */
		    s1 = head_a + head_b;
		    bv = s1 - head_a;
		    s2 = ((head_b - bv) + (head_a - (s1 - bv)));

		    /* Add two lo words. */
		    t1 = tail_a + tail_b;
		    bv = t1 - tail_a;
		    t2 = ((tail_b - bv) + (tail_a - (t1 - bv)));

		    s2 += t1;

		    /* Renormalize (s1, s2)  to  (t1, s2) */
		    t1 = s1 + s2;
		    s2 = s2 - (t1 - s1);

		    t2 += s2;

		    /* Renormalize (t1, t2)  */
		    head_t = t1 + t2;
		    tail_t = t2 - (head_t - t1);
		  }
		  head_sum[1] = head_t;
		  tail_sum[1] = tail_t;
		}
	      }
	      y_elem[0] = y_i[yi];
	      y_elem[1] = y_i[yi + 1];
	      {
		double head_e1, tail_e1;
		double d1;
		double d2;
		/* Real part */
		d1 = (double) y_elem[0] * beta_i[0];
		d2 = (double) -y_elem[1] * beta_i[1];
		{
		  /* Compute double-double = double + double. */
		  double e, t1, t2;

		  /* Knuth trick. */
		  t1 = d1 + d2;
		  e = t1 - d1;
		  t2 = ((d2 - e) + (d1 - (t1 - e)));

		  /* The result is t1 + t2, after normalization. */
		  head_e1 = t1 + t2;
		  tail_e1 = t2 - (head_e1 - t1);
		}
		head_tmp2[0] = head_e1;
		tail_tmp2[0] = tail_e1;
		/* imaginary part */
		d1 = (double) y_elem[0] * beta_i[1];
		d2 = (double) y_elem[1] * beta_i[0];
		{
		  /* Compute double-double = double + double. */
		  double e, t1, t2;

		  /* Knuth trick. */
		  t1 = d1 + d2;
		  e = t1 - d1;
		  t2 = ((d2 - e) + (d1 - (t1 - e)));

		  /* The result is t1 + t2, after normalization. */
		  head_e1 = t1 + t2;
		  tail_e1 = t2 - (head_e1 - t1);
		}
		head_tmp2[1] = head_e1;
		tail_tmp2[1] = tail_e1;
	      }
	      {
		double cd[2];
		cd[0] = (double) alpha_i[0];
		cd[1] = (double) alpha_i[1];
		{
		  /* Compute complex-extra = complex-extra * complex-double. */
		  double head_a0, tail_a0;
		  double head_a1, tail_a1;
		  double head_t1, tail_t1;
		  double head_t2, tail_t2;
		  head_a0 = head_sum[0];
		  tail_a0 = tail_sum[0];
		  head_a1 = head_sum[1];
		  tail_a1 = tail_sum[1];
		  /* real part */
		  {
		    /* Compute double-double = double-double * double. */
		    double a11, a21, b1, b2, c11, c21, c2, con, t1, t2;

		    con = head_a0 * split;
		    a11 = con - head_a0;
		    a11 = con - a11;
		    a21 = head_a0 - a11;
		    con = cd[0] * split;
		    b1 = con - cd[0];
		    b1 = con - b1;
		    b2 = cd[0] - b1;

		    c11 = head_a0 * cd[0];
		    c21 =
		      (((a11 * b1 - c11) + a11 * b2) + a21 * b1) + a21 * b2;

		    c2 = tail_a0 * cd[0];
		    t1 = c11 + c2;
		    t2 = (c2 - (t1 - c11)) + c21;

		    head_t1 = t1 + t2;
		    tail_t1 = t2 - (head_t1 - t1);
		  }
		  {
		    /* Compute double-double = double-double * double. */
		    double a11, a21, b1, b2, c11, c21, c2, con, t1, t2;

		    con = head_a1 * split;
		    a11 = con - head_a1;
		    a11 = con - a11;
		    a21 = head_a1 - a11;
		    con = cd[1] * split;
		    b1 = con - cd[1];
		    b1 = con - b1;
		    b2 = cd[1] - b1;

		    c11 = head_a1 * cd[1];
		    c21 =
		      (((a11 * b1 - c11) + a11 * b2) + a21 * b1) + a21 * b2;

		    c2 = tail_a1 * cd[1];
		    t1 = c11 + c2;
		    t2 = (c2 - (t1 - c11)) + c21;

		    head_t2 = t1 + t2;
		    tail_t2 = t2 - (head_t2 - t1);
		  }
		  head_t2 = -head_t2;
		  tail_t2 = -tail_t2;
		  {
		    /* Compute double-double = double-double + double-double. */
		    double bv;
		    double s1, s2, t1, t2;

		    /* Add two hi words. */
		    s1 = head_t1 + head_t2;
		    bv = s1 - head_t1;
		    s2 = ((head_t2 - bv) + (head_t1 - (s1 - bv)));

		    /* Add two lo words. */
		    t1 = tail_t1 + tail_t2;
		    bv = t1 - tail_t1;
		    t2 = ((tail_t2 - bv) + (tail_t1 - (t1 - bv)));

		    s2 += t1;

		    /* Renormalize (s1, s2)  to  (t1, s2) */
		    t1 = s1 + s2;
		    s2 = s2 - (t1 - s1);

		    t2 += s2;

		    /* Renormalize (t1, t2)  */
		    head_t1 = t1 + t2;
		    tail_t1 = t2 - (head_t1 - t1);
		  }
		  head_tmp1[0] = head_t1;
		  tail_tmp1[0] = tail_t1;
		  /* imaginary part */
		  {
		    /* Compute double-double = double-double * double. */
		    double a11, a21, b1, b2, c11, c21, c2, con, t1, t2;

		    con = head_a1 * split;
		    a11 = con - head_a1;
		    a11 = con - a11;
		    a21 = head_a1 - a11;
		    con = cd[0] * split;
		    b1 = con - cd[0];
		    b1 = con - b1;
		    b2 = cd[0] - b1;

		    c11 = head_a1 * cd[0];
		    c21 =
		      (((a11 * b1 - c11) + a11 * b2) + a21 * b1) + a21 * b2;

		    c2 = tail_a1 * cd[0];
		    t1 = c11 + c2;
		    t2 = (c2 - (t1 - c11)) + c21;

		    head_t1 = t1 + t2;
		    tail_t1 = t2 - (head_t1 - t1);
		  }
		  {
		    /* Compute double-double = double-double * double. */
		    double a11, a21, b1, b2, c11, c21, c2, con, t1, t2;

		    con = head_a0 * split;
		    a11 = con - head_a0;
		    a11 = con - a11;
		    a21 = head_a0 - a11;
		    con = cd[1] * split;
		    b1 = con - cd[1];
		    b1 = con - b1;
		    b2 = cd[1] - b1;

		    c11 = head_a0 * cd[1];
		    c21 =
		      (((a11 * b1 - c11) + a11 * b2) + a21 * b1) + a21 * b2;

		    c2 = tail_a0 * cd[1];
		    t1 = c11 + c2;
		    t2 = (c2 - (t1 - c11)) + c21;

		    head_t2 = t1 + t2;
		    tail_t2 = t2 - (head_t2 - t1);
		  }
		  {
		    /* Compute double-double = double-double + double-double. */
		    double bv;
		    double s1, s2, t1, t2;

		    /* Add two hi words. */
		    s1 = head_t1 + head_t2;
		    bv = s1 - head_t1;
		    s2 = ((head_t2 - bv) + (head_t1 - (s1 - bv)));

		    /* Add two lo words. */
		    t1 = tail_t1 + tail_t2;
		    bv = t1 - tail_t1;
		    t2 = ((tail_t2 - bv) + (tail_t1 - (t1 - bv)));

		    s2 += t1;

		    /* Renormalize (s1, s2)  to  (t1, s2) */
		    t1 = s1 + s2;
		    s2 = s2 - (t1 - s1);

		    t2 += s2;

		    /* Renormalize (t1, t2)  */
		    head_t1 = t1 + t2;
		    tail_t1 = t2 - (head_t1 - t1);
		  }
		  head_tmp1[1] = head_t1;
		  tail_tmp1[1] = tail_t1;
		}

	      }
	      {
		double head_t, tail_t;
		double head_a, tail_a;
		double head_b, tail_b;
		/* Real part */
		head_a = head_tmp2[0];
		tail_a = tail_tmp2[0];
		head_b = head_tmp1[0];
		tail_b = tail_tmp1[0];
		{
		  /* Compute double-double = double-double + double-double. */
		  double bv;
		  double s1, s2, t1, t2;

		  /* Add two hi words. */
		  s1 = head_a + head_b;
		  bv = s1 - head_a;
		  s2 = ((head_b - bv) + (head_a - (s1 - bv)));

		  /* Add two lo words. */
		  t1 = tail_a + tail_b;
		  bv = t1 - tail_a;
		  t2 = ((tail_b - bv) + (tail_a - (t1 - bv)));

		  s2 += t1;

		  /* Renormalize (s1, s2)  to  (t1, s2) */
		  t1 = s1 + s2;
		  s2 = s2 - (t1 - s1);

		  t2 += s2;

		  /* Renormalize (t1, t2)  */
		  head_t = t1 + t2;
		  tail_t = t2 - (head_t - t1);
		}
		head_tmp1[0] = head_t;
		tail_tmp1[0] = tail_t;
		/* Imaginary part */
		head_a = head_tmp2[1];
		tail_a = tail_tmp2[1];
		head_b = head_tmp1[1];
		tail_b = tail_tmp1[1];
		{
		  /* Compute double-double = double-double + double-double. */
		  double bv;
		  double s1, s2, t1, t2;

		  /* Add two hi words. */
		  s1 = head_a + head_b;
		  bv = s1 - head_a;
		  s2 = ((head_b - bv) + (head_a - (s1 - bv)));

		  /* Add two lo words. */
		  t1 = tail_a + tail_b;
		  bv = t1 - tail_a;
		  t2 = ((tail_b - bv) + (tail_a - (t1 - bv)));

		  s2 += t1;

		  /* Renormalize (s1, s2)  to  (t1, s2) */
		  t1 = s1 + s2;
		  s2 = s2 - (t1 - s1);

		  t2 += s2;

		  /* Renormalize (t1, t2)  */
		  head_t = t1 + t2;
		  tail_t = t2 - (head_t - t1);
		}
		head_tmp1[1] = head_t;
		tail_tmp1[1] = tail_t;
	      }
	      y_i[yi] = head_tmp1[0];
	      y_i[yi + 1] = head_tmp1[1];
	    }
	  }
	}
      }
      FPU_FIX_STOP;

      break;
    }

  default:
    BLAS_error(routine_name, -12, prec, NULL);
    break;
  }
}				/* end BLAS_chemv */