1  #include <altivec.h>
       2  
       3  extern void abort (void);
       4  extern int memcmp (const void *, const void *, __SIZE_TYPE__);
       5  
       6  void test (vector float *p, int n)
       7  {
       8    int i;
       9    for (i = 0; i < n; i++)
      10      p[i] = vec_abs (p[i]);
      11  }
      12  
      13  int
      14  main (void)
      15  {
      16    vector float p = (vector float){ 0.5, 0.5, 0.5, 0.5 };
      17    vector float q = p;
      18  
      19    test (&p, 1);
      20  
      21    if (memcmp (&p, &q, sizeof (p)))
      22      abort ();
      23  
      24    return 0;
      25  }
      26