gcc/testsuite/gcc.target/i386/sse2-copysign-vec.c

   1 /* { dg-do run } */
   2 /* { dg-options "-O2 -ftree-vectorize -msse2" } */
   3 /* { dg-require-effective-target sse2 } */
   4
   5 #include "sse2-check.h"
   6
   7 extern double copysign (double, double);
   8
   9 #define N 16
  10
  11 double a[N] = {-0.1,-3.2,-6.3,-9.4,-12.5,-15.6,-18.7,-21.8,24.9,27.1,30.2,33.3,36.4,39.5,42.6,45.7};
  12 double b[N] = {-1.2,3.4,-5.6,7.8,-9.0,1.0,-2.0,3.0,-4.0,-5.0,6.0,7.0,-8.0,-9.0,10.0,11.0};
  13 double r[N];
  14
  15 static void
  16 sse2_test (void)
  17 {
  18   int i;
  19
  20   for (i = 0; i < N; i++)
  21     r[i] = copysign (a[i], b[i]);
  22
  23   /* check results:  */
  24   for (i = 0; i < N; i++)
  25     if (r[i] != copysign (a[i], b[i]))
  26       abort ();
  27 }
  28