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

   1 /* { dg-do run } */
   2 /* { dg-options "-mavx512f -O2" } */
   3 /* { dg-require-effective-target avx512f } */
   4
   5 #define SIZE (128 / 32)
   6
   7 #include <math.h>
   8 #include "avx512f-check.h"
   9
  10 static void
  11 compute_rndscaless (float *s1, float *s2, float *r, int imm)
  12 {
  13   int rc, m;
  14   rc = imm & 0xf;
  15   m = imm >> 4;
  16
  17   switch (rc)
  18     {
  19     case _MM_FROUND_FLOOR:
  20       r[0] = __builtin_floorf (s2[0] * pow (2, m)) / pow (2, m);
  21       break;
  22     case _MM_FROUND_CEIL:
  23       r[0] = __builtin_ceilf (s2[0] * pow (2, m)) / pow (2, m);
  24       break;
  25     default:
  26       abort ();
  27       break;
  28     }
  29
  30   r[1] = s1[1];
  31   r[2] = s1[2];
  32   r[3] = s1[3];
  33 }
  34
  35 static void
  36 avx512f_test (void)
  37 {
  38   int imm = _MM_FROUND_FLOOR | (7 << 4);
  39   union128 s1, s2, res1;
  40   float res_ref[SIZE];
  41
  42   s1.x = _mm_set_ps (4.05084, -1.23162, 2.00231, -6.22103);
  43   s2.x = _mm_set_ps (-4.19319, -3.53222, 7.33527, 5.57655);
  44
  45   res1.x = _mm_roundscale_ss (s1.x, s2.x, imm);
  46
  47   compute_rndscaless (s1.a, s2.a, res_ref, imm);
  48
  49   if (check_union128 (res1, res_ref))
  50     abort ();
  51 }