gcc/testsuite/gcc.target/i386/avx-cvt-2-vec.c

   1 /* { dg-do run } */
   2 /* { dg-options "-O2 -ffast-math -ftree-vectorize -mavx" } */
   3 /* { dg-require-effective-target avx } */
   4 /* { dg-skip-if "no M_PI" { vxworks_kernel } } */
   5
   6 #ifndef CHECK_H
   7 #define CHECK_H "avx-check.h"
   8 #endif
   9
  10 #ifndef TEST
  11 #define TEST avx_test
  12 #endif
  13
  14 #include CHECK_H
  15
  16 #include <math.h>
  17
  18 #define NUM 4
  19
  20 static void
  21 __attribute__((__target__("fpmath=sse")))
  22 init_src (double *src)
  23 {
  24   int i, sign = 1;
  25   double f = rand ();
  26
  27   for (i = 0; i < NUM; i++)
  28     {
  29       src[i] = (i + 1) * f * M_PI * sign;
  30       if (i < (NUM / 2))
  31         {
  32           if ((i % 6) == 0)
  33             f = f * src[i];
  34         }
  35       else if (i == (NUM / 2))
  36         f = rand ();
  37       else if ((i % 6) == 0)
  38         f = 1 / (f * (i + 1) * src[i] * M_PI * sign);
  39       sign = -sign;
  40     }
  41 }
  42
  43 static void
  44 __attribute__((__target__("fpmath=sse")))
  45 TEST (void)
  46 {
  47   double a[NUM];
  48   float r[NUM];
  49   int i;
  50
  51   init_src (a);
  52
  53   for (i = 0; i < NUM; i++)
  54     r[i] = (float) a[i];
  55
  56   /* check results:  */
  57   for (i = 0; i < NUM; i++)
  58     if (r[i] != (float) a[i])
  59       abort();
  60 }