mirror of git://gcc.gnu.org/git/gcc.git
63 lines
1.0 KiB
C
63 lines
1.0 KiB
C
/* { dg-do run } */
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/* { dg-additional-options "-msse2" { target sse2_runtime } } */
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/* { dg-additional-options "-mavx" { target avx_runtime } } */
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#define N 100
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#define EPS 0.0000000000000001
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#include <stdlib.h>
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void init(double *a, double *a_ref, double *b, int n)
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{
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int i, s = -1;
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for ( i = 0; i < n; i++ )
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{
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a[i] = i*i*s;
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a_ref[i] = a[i];
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b[i] = i+i;
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s = -s;
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}
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}
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double work( double *a, double *b, int n )
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{
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int i;
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double tmp, sum;
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sum = 0.0;
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#pragma omp simd private(tmp) reduction(+:sum)
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for (i = 0; i < n; i++) {
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tmp = a[i] + b[i];
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sum += tmp;
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}
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return sum;
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}
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double work_ref( double *a, double *b, int n )
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{
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int i;
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double tmp, sum;
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sum = 0.0;
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for (i = 0; i < n; i++) {
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tmp = a[i] + b[i];
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sum += tmp;
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}
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return sum;
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}
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int main ()
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{
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double a[N], a_ref[N], b[N], res, ref, diff;
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init(a, a_ref, b, N);
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res = work(a, b, N);
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ref = work_ref(a_ref, b, N);
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diff = res - ref;
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if (diff > EPS || -diff > EPS)
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abort ();
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return 0;
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}
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