gcc/testsuite/gcc.target/arm/vect-copysignf.c

/* { dg-do run } */
/* { dg-require-effective-target arm_neon_hw } */
/* { dg-options "-O2 -ftree-vectorize -fdump-tree-vect-details" } */
/* { dg-add-options "arm_neon" } */

extern void abort ();

#define N 16
float a[N] = {-0.1f, -3.2f, -6.3f, -9.4f,
	      -12.5f, -15.6f, -18.7f, -21.8f,
	      24.9f, 27.1f, 30.2f, 33.3f,
	      36.4f, 39.5f, 42.6f, 45.7f};
float b[N] = {-1.2f, 3.4f, -5.6f, 7.8f,
	      -9.0f, 1.0f, -2.0f, 3.0f,
	      -4.0f, -5.0f, 6.0f, 7.0f,
	      -8.0f, -9.0f, 10.0f, 11.0f};
float r[N];

int
main (void)
{
  int i;

  for (i = 0; i < N; i++)
    r[i] = __builtin_copysignf (a[i], b[i]);

  /* check results:  */
  for (i = 0; i < N; i++)
    if (r[i] != __builtin_copysignf (a[i], b[i]))
      abort ();

  return 0;
}

/* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" } } */