mirror of
https://github.com/autc04/Retro68.git
synced 2024-12-23 10:31:22 +00:00
89 lines
1.6 KiB
C
89 lines
1.6 KiB
C
extern
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#ifdef __cplusplus
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"C"
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#endif
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void abort (void);
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void
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fn1 (double *x, double *y, int z)
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{
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int i;
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for (i = 0; i < z; i++)
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{
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x[i] = i & 31;
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y[i] = (i & 63) - 30;
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}
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}
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double
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fn2 (int x)
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{
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double s = 0;
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double b[3 * x], c[3 * x], d[3 * x], e[3 * x];
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int i;
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fn1 (b, c, x);
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fn1 (e, d + x, x);
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#pragma omp target map(to: b, c[:x], d[x:x], e) map(tofrom: s)
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#pragma omp parallel for reduction(+:s)
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for (i = 0; i < x; i++)
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s += b[i] * c[i] + d[x + i] + sizeof (b) - sizeof (c);
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return s;
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}
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double
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fn3 (int x)
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{
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double s = 0;
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double b[3 * x], c[3 * x], d[3 * x], e[3 * x];
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int i;
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fn1 (b, c, x);
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fn1 (e, d, x);
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#pragma omp target map(tofrom: s)
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#pragma omp parallel for reduction(+:s)
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for (i = 0; i < x; i++)
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s += b[i] * c[i] + d[i];
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return s;
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}
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double
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fn4 (int x)
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{
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double s = 0;
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double b[3 * x], c[3 * x], d[3 * x], e[3 * x];
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int i;
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fn1 (b, c, x);
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fn1 (e, d + x, x);
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#pragma omp target data map(from: b, c[:x], d[x:x], e)
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{
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#pragma omp target update to(b, c[:x], d[x:x], e)
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#pragma omp target map(c[:x], d[x:x], s)
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#pragma omp parallel for reduction(+:s)
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for (i = 0; i < x; i++)
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{
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s += b[i] * c[i] + d[x + i] + sizeof (b) - sizeof (c);
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b[i] = i + 0.5;
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c[i] = 0.5 - i;
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d[x + i] = 0.5 * i;
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}
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}
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for (i = 0; i < x; i++)
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if (b[i] != i + 0.5 || c[i] != 0.5 - i || d[x + i] != 0.5 * i)
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abort ();
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return s;
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}
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int
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main ()
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{
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double a = fn2 (128);
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if (a != 14080.0)
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abort ();
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double b = fn3 (128);
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if (a != b)
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abort ();
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double c = fn4 (256);
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if (c != 28160.0)
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abort ();
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return 0;
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}
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