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

   1 /* { dg-do run } */
   2 /* { dg-require-effective-target avx512er } */
   3 /* { dg-options "-O2 -mavx512er" } */
   4
   5 #include "avx512er-check.h"
   6 #include "avx512f-mask-type.h"
   7 #include "avx512f-helper.h"
   8 #include <math.h>
   9
  10 void static
  11 avx512er_test (void)
  12 {
  13   union128 src1, src2, res;
  14   float res_ref[4];
  15   int i;
  16
  17   for (i = 0; i < 4; i++)
  18     {
  19       src1.a[i] = 179.345 - 6.5645 * i;
  20       src2.a[i] = 179221345 + 6.5645 * i;
  21       res_ref[i] = src1.a[i];
  22     }
  23
  24   res_ref[0] = 1.0 / sqrt (src2.a[0]);
  25
  26   res.x = _mm_rsqrt28_round_ss (src1.x, src2.x, _MM_FROUND_NO_EXC);
  27
  28   if (checkVf (res.a, res_ref, 4))
  29     abort ();
  30 }