gcc/testsuite/gcc.target/i386/avx512er-vrsqrt28ss-2.c

/* { dg-do run } */
/* { dg-require-effective-target avx512er } */
/* { dg-options "-O2 -mavx512er" } */

#include "avx512er-check.h"
#include "avx512f-mask-type.h"
#include "avx512f-helper.h"
#include <math.h>

#define IMM 0x23

void static
avx512er_test (void)
{
  union128 src1, src2, res, res1, res2, res3, res4;
  float res_ref[4];
  MASK_TYPE mask = MASK_VALUE;
  int i;
  
  for (i = 0; i < 4; i++)
    {
      src1.a[i] = 179.345 - 6.5645 * i;
      src2.a[i] = 179221345 + 6.5645 * i;
      res_ref[i] = src1.a[i];
    }

  res_ref[0] = 1.0 / sqrt (src2.a[0]);

  res.x = _mm_rsqrt28_round_ss (src1.x, src2.x, _MM_FROUND_NO_EXC);
  res1.x = _mm_mask_rsqrt28_ss (src1.x, IMM, src1.x, src2.x);
  res2.x = _mm_mask_rsqrt28_round_ss (src1.x, IMM, src1.x, src2.x,
				      _MM_FROUND_TO_NEAREST_INT
				      | _MM_FROUND_NO_EXC);
  res3.x = _mm_maskz_rsqrt28_ss (IMM, src1.x, src2.x);
  res4.x = _mm_maskz_rsqrt28_round_ss (IMM, src1.x, src2.x,
				       _MM_FROUND_TO_NEAREST_INT
				       | _MM_FROUND_NO_EXC);

  if (checkVf (res.a, res_ref, 4))
    abort ();
  
  MASK_MERGE () (res_ref, mask, 1);

  if (checkVf (res1.a, res_ref, 2))
    abort ();

  if (checkVf (res2.a, res_ref, 2))
    abort ();

  MASK_ZERO () (res_ref, mask, 1);

  if (checkVf (res3.a, res_ref, 2))
    abort ();

  if (checkVf (res4.a, res_ref, 2))
    abort ();
}