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/* { dg-do run } */
#include <stdlib.h>
#define EPS 0.000001
#define N 100000
void init (double *a1, double *a2)
{
double s = -1;
int i;
for (i = 0; i < N; i++)
{
a1[i] = s;
a2[i] = i;
s = -s;
}
}
void check (double *a, double *b)
{
int i;
for (i = 0; i < N; i++)
if (a[i] - b[i] > EPS || b[i] - a[i] > EPS)
abort ();
}
void vec_mult_ref (double *p, double *v1, double *v2)
{
int i;
for (i = 0; i < N; i++)
p[i] = v1[i] * v2[i];
}
void vec_mult (double *p, double *v1, double *v2)
{
int i;
#pragma omp target map(to: v1[0:N], v2[:N]) map(from: p[0:N])
#pragma omp parallel for
for (i = 0; i < N; i++)
p[i] = v1[i] * v2[i];
}
int main ()
{
double p1[N], p2[N];
double v1[N], v2[N];
init (v1, v2);
vec_mult_ref (p1, v1, v2);
vec_mult (p2, v1, v2);
check (p1, p2);
return 0;
}
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