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#include <assert.h>
/* Test of reduction on both parallel and loop directives (worker and
vector-partitioned loops individually in gang-partitioned mode, int
type). */
int
main (int argc, char *argv[])
{
int i, j, arr[32768], res = 0, hres = 0;
for (i = 0; i < 32768; i++)
arr[i] = i;
#pragma acc parallel num_gangs(32) num_workers(32) vector_length(32) \
reduction(+:res) copy(res)
{
#pragma acc loop gang
for (j = 0; j < 32; j++)
{
#pragma acc loop worker reduction(+:res)
for (i = 0; i < 1024; i++)
res += arr[j * 1024 + i];
#pragma acc loop vector reduction(+:res)
for (i = 1023; i >= 0; i--)
res += arr[j * 1024 + i];
}
}
for (j = 0; j < 32; j++)
for (i = 0; i < 1024; i++)
hres += arr[j * 1024 + i] * 2;
assert (res == hres);
return 0;
}
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