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/* { dg-require-effective-target fma4 } */

/* { dg-options "-O2 -mfma4" } */

#include "fma4-check.h"

#include <x86intrin.h>

#include <string.h>

#define NUM 20

union

{

  __m256 x[NUM];

  float f[NUM * 8];

  __m256d y[NUM];

  double d[NUM * 4];

} dst, res, src1, src2, src3;

/* Note that in macc*,msub*,mnmacc* and mnsub* instructions, the intermdediate

   product is not rounded, only the addition is rounded. */

static void

init_nmsubps ()

{

  int i;

  for (i = 0; i < NUM * 8; i++)

    {

      src1.f[i] = i;

      src2.f[i] = i + 10;

      src3.f[i] = i + 20;

    }

}

static void

init_nmsubpd ()

{

  int i;

  for (i = 0; i < NUM * 4; i++)

    {

      src1.d[i] = i;

      src2.d[i] = i + 10;

      src3.d[i] = i + 20;

    }

}

static int

check_nmsubps ()

{

  int i, j, check_fails = 0;

  for (i = 0; i < NUM * 8; i = i + 8)

    for (j = 0; j < 8; j++)

      {

        res.f[i + j] = - (src1.f[i + j] * src2.f[i + j]) - src3.f[i + j];

        if (dst.f[i + j] != res.f[i + j])

          check_fails++;

      }

  return check_fails++;

}

static int

check_nmsubpd ()

{

  int i, j, check_fails = 0;

  for (i = 0; i < NUM * 4; i = i + 4)

    for (j = 0; j < 4; j++)

      {

        res.d[i + j] = - (src1.d[i + j] * src2.d[i + j]) - src3.d[i + j];

        if (dst.d[i + j] != res.d[i + j])

          check_fails++;

      }

  return check_fails++;

}

static void

fma4_test (void)

{

  int i;

  init_nmsubps ();

  for (i = 0; i < NUM; i++)

    dst.x[i] = _mm256_nmsub_ps (src1.x[i], src2.x[i], src3.x[i]);

  if (check_nmsubps (&dst.x[i], &src1.f[i * 4], &src2.f[i * 4], &src3.f[i * 4]))

    abort ();

  init_nmsubpd ();

  for (i = 0; i < NUM; i++)

    dst.y[i] = _mm256_nmsub_pd (src1.y[i], src2.y[i], src3.y[i]);

  if (check_nmsubpd (&dst.y[i], &src1.d[i * 2], &src2.d[i * 2], &src3.d[i * 2]))

    abort ();

}