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/* Tests of reduction on loop directive. */
#include <assert.h>
/* Test of reduction on loop directive (gangs, non-private reduction
variable). */
void g_np_1()
{
int i, arr[1024], res = 0, hres = 0;
for (i = 0; i < 1024; i++)
arr[i] = i;
#pragma acc parallel num_gangs(32) num_workers(32) vector_length(32) \
copy(res)
{
#pragma acc loop gang reduction(+:res)
for (i = 0; i < 1024; i++)
res += arr[i];
}
for (i = 0; i < 1024; i++)
hres += arr[i];
assert (res == hres);
res = hres = 1;
#pragma acc parallel num_gangs(32) num_workers(32) vector_length(32) \
copy(res)
{
#pragma acc loop gang reduction(*:res)
for (i = 0; i < 12; i++)
res *= arr[i];
}
for (i = 0; i < 12; i++)
hres *= arr[i];
assert (res == hres);
}
/* Test of reduction on loop directive (gangs and vectors, non-private
reduction variable). */
void gv_np_1()
{
int i, arr[1024], res = 0, hres = 0;
for (i = 0; i < 1024; i++)
arr[i] = i;
#pragma acc parallel num_gangs(32) num_workers(32) vector_length(32) \
copy(res)
{
#pragma acc loop gang vector reduction(+:res)
for (i = 0; i < 1024; i++)
res += arr[i];
}
for (i = 0; i < 1024; i++)
hres += arr[i];
assert (res == hres);
}
/* Test of reduction on loop directive (gangs and workers, non-private
reduction variable). */
void gw_np_1()
{
int i, arr[1024], res = 0, hres = 0;
for (i = 0; i < 1024; i++)
arr[i] = i;
#pragma acc parallel num_gangs(32) num_workers(32) vector_length(32) \
copy(res)
{
#pragma acc loop gang worker reduction(+:res)
for (i = 0; i < 1024; i++)
res += arr[i];
}
for (i = 0; i < 1024; i++)
hres += arr[i];
assert (res == hres);
}
/* Test of reduction on loop directive (gangs, workers and vectors, non-private
reduction variable). */
void gwv_np_1()
{
int i, arr[1024], res = 0, hres = 0;
for (i = 0; i < 1024; i++)
arr[i] = i;
#pragma acc parallel num_gangs(32) num_workers(32) vector_length(32) \
copy(res)
{
#pragma acc loop gang worker vector reduction(+:res)
for (i = 0; i < 1024; i++)
res += arr[i];
}
for (i = 0; i < 1024; i++)
hres += arr[i];
assert (res == hres);
}
int main()
{
g_np_1();
gv_np_1();
gw_np_1();
gwv_np_1();
return 0;
}
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