gcc/testsuite/gcc.target/i386/avx-vrsqrtps-256-1.c

   1 /* { dg-do run } */
   2 /* { dg-require-effective-target avx } */
   3 /* { dg-options "-O2 -mfpmath=sse -mavx" } */
   4
   5 #include "avx-check.h"
   6
   7 static void
   8 avx_test ()
   9 {
  10     int i;
  11     union256 u, s1;
  12     float e[8] = {0.0};
  13
  14     s1.x = _mm256_set_ps (1.0, 2.0, 13.0, 14.0, 56.89, 73.3, 4.78, 45.64);
  15     u.x = _mm256_rsqrt_ps (s1.x);
  16
  17     for (i = 0; i < 8; i++) {
  18       __m128 tmp = _mm_load_ss (&s1.a[i]);
  19       tmp = _mm_rsqrt_ss (tmp);
  20       _mm_store_ss (&e[i], tmp);
  21     }
  22
  23     if (check_union256 (u, e))
  24       abort ();
  25 }
  26