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/* { dg-do run } */

/* { dg-require-effective-target sse4 } */

/* { dg-options "-O2 -msse4.1" } */

/* { dg-skip-if "no M_PI" { vxworks_kernel } } */

#include "sse4_1-check.h"

#include <smmintrin.h>

#include <math.h>

#include <string.h>

#define NUM 64

static void

init_round (double *src)

{

  int i, sign = 1;

  double d = rand ();

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

    {

      src[i] = (i + 1)* d * M_PI * sign;

      if (i < (NUM / 2))

        {

          if ((i % 6) == 0)

            d = d * src[i];

        }

      else if (i == (NUM / 2))

        d = rand ();

      else if ((i % 6) == 0)

        d = 1 / (d * (i + 1) * src[i] * M_PI *sign);

      sign = -sign;

    }

}

static double

do_round (double f, int type)

{

  short saved_cw, new_cw, clr_mask;

  double ret;

  if ((type & 4))

    {

      type = 0;

      clr_mask = 0xFFFF;

    }

  else

    {

      type = 0x003F | ((type & 3) << 10);

      clr_mask = ~0x0C3F;

    }

  __asm__ ("fldl %0" : : "m" (*&f));

  __asm__ ("fstcw %0" : "=m" (*&saved_cw));

  new_cw = saved_cw & clr_mask;

  new_cw |= type;

  __asm__ ("fldcw %0" : : "m" (*&new_cw));

  __asm__ ("frndint\n"

           "fstpl %0\n" : "=m" (*&ret));

  __asm__ ("fldcw %0" : : "m" (*&saved_cw));

  return ret;

}

static void

sse4_1_test (void)

{

  int i;

  double f;

  union

    {

      __m128d x[NUM / 2];

      double d[NUM];

    } dst, src;

  init_round (src.d);

  memset (&dst, 0, NUM * sizeof(double));

  for (i = 0; i < NUM / 2 ; i++)

    dst.x[i] =  _mm_round_sd (dst.x[i], src.x[i], _MM_FROUND_TRUNC);

  for (i = 0; i < NUM; i += 2)

    {

      if (dst.d[i + 1] != 0.0)

        abort ();

      f = do_round (src.d[i], 0x03);

      if (f != dst.d[i])

        abort ();

    }

}