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/* { dg-do run } */
/* { dg-additional-options "-msse2" { target sse2_runtime } } */
/* { dg-additional-options "-mavx" { target avx_runtime } } */
#define N 128
#define M 16
#define EPS 0.0000000000000001
#define SAFELEN 16
#include <stdlib.h>
void init(double *a, double *b, int n)
{
int i, s = -1;
for ( i = 0; i < n; i++ )
{
a[i] = i*i*s;
b[i] = a[i];
s = -s;
}
}
void work( double *b, int n, int m )
{
int i;
#pragma omp simd safelen(SAFELEN)
for (i = m; i < n; i++)
b[i] = b[i-m] - 1.0f;
}
void work_ref( double *b, int n, int m )
{
int i;
for (i = m; i < n; i++)
b[i] = b[i-m] - 1.0f;
}
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 ();
}
int main ()
{
double b[N], b_ref[N];
init(b, b_ref, N);
work(b, N, M);
work(b_ref, N, M);
check(b, b_ref);
return 0;
}
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