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// { dg-do run }
#include <omp.h>
#define EPS 0.000001
#define N 1000
extern "C" void abort (void);
void init (float *a1, float *a2, int n)
{
int s = -1;
for (int i = 0; i < n; i++)
{
a1[i] = s * 0.01;
a2[i] = i;
s = -s;
}
}
void check (float *a, float *b, int n)
{
for (int i = 0; i < n; i++)
if (a[i] - b[i] > EPS || b[i] - a[i] > EPS)
abort ();
}
void vec_mult_ref (float *&p, float *&v1, float *&v2, int n)
{
for (int i = 0; i < n; i++)
p[i] = v1[i] * v2[i];
}
void vec_mult (float *&p, float *&v1, float *&v2, int n)
{
#pragma omp target map(to: v1[0:n], v2[:n]) map(from: p[0:n])
#pragma omp parallel for
for (int i = 0; i < n; i++)
p[i] = v1[i] * v2[i];
}
int main ()
{
float *p = new float [N];
float *p1 = new float [N];
float *v1 = new float [N];
float *v2 = new float [N];
init (v1, v2, N);
vec_mult_ref (p, v1, v2, N);
vec_mult (p1, v1, v2, N);
check (p, p1, N);
delete [] p;
delete [] p1;
delete [] v1;
delete [] v2;
return 0;
}
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