gcc/testsuite/gcc.target/i386/sse2-pavgw-1.c

/* { dg-do run } */
/* { dg-options "-O2 -msse2" } */
/* { dg-require-effective-target sse2 } */

#ifndef CHECK_H
#define CHECK_H "sse2-check.h"
#endif

#ifndef TEST
#define TEST sse2_test
#endif

#include CHECK_H

#include <emmintrin.h>

static __m128i
__attribute__((noinline, unused))
test (__m128i s1, __m128i s2)
{
  return _mm_avg_epu16 (s1, s2); 
}

static void
TEST (void)
{
  union128i_uw u, s1, s2;
  unsigned short e[8];
  int i;
   
  s1.x = _mm_set_epi16 (10,20,30,90,80,40,100,15);
  s2.x = _mm_set_epi16 (11, 98, 76, 100, 34, 78, 39, 14);
  u.x = test (s1.x, s2.x); 
   
  for (i = 0; i < 8; i++)
     e[i] = (s1.a[i] + s2.a[i]+1)>>1;

  if (check_union128i_uw (u, e))
    abort ();
}