gcc/libgomp/testsuite/libgomp.c++/reduction-1.C

37 lines
615 B
C

#include <omp.h>
#include <stdlib.h>
int
main (void)
{
int i = 0, j = 0, k = ~0;
double d = 1.0;
#pragma omp parallel num_threads(4) reduction(+:i) reduction(*:d) reduction(&:k)
{
if (i != 0 || d != 1.0 || k != ~0)
#pragma omp atomic
j |= 1;
if (omp_get_num_threads () != 4)
#pragma omp atomic
j |= 2;
i = omp_get_thread_num ();
d = i + 1;
k = ~(1 << (2 * i));
}
if (j & 1)
abort ();
if ((j & 2) == 0)
{
if (i != (0 + 1 + 2 + 3))
abort ();
if (d != (1.0 * 2.0 * 3.0 * 4.0))
abort ();
if (k != (~0 ^ 0x55))
abort ();
}
return 0;
}