gcc/testsuite/gcc.target/i386/avx512f-vrsqrt14ss-2.c

   1 /* { dg-do run } */
   2 /* { dg-options "-mavx512f -O2" } */
   3 /* { dg-require-effective-target avx512f } */
   4
   5 #include <math.h>
   6 #include "avx512f-check.h"
   7
   8 static void
   9 compute_vrsqrt14ss (float *s1, float *s2, float *r)
  10 {
  11   r[0] = 1.0 / sqrt (s2[0]);
  12   r[1] = s1[1];
  13   r[2] = s1[2];
  14   r[3] = s1[3];
  15 }
  16
  17 static void
  18 avx512f_test (void)
  19 {
  20   union128 s1, s2, res1;
  21   float res_ref[4];
  22
  23   s1.x = _mm_set_ps (-24.43, 68.346, -43.35, 546.46);
  24   s2.x = _mm_set_ps (222.222, 333.333, 444.444, 4.0);
  25
  26   res1.x = _mm_rsqrt14_ss (s1.x, s2.x);
  27
  28   compute_vrsqrt14ss (s1.a, s2.a, res_ref);
  29
  30   if (check_fp_union128 (res1, res_ref))
  31     abort ();
  32 }