74 lines
1.8 KiB
C
74 lines
1.8 KiB
C
#include <math.h>
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#define N 12
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int main()
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{
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unsigned int arguments[N] = {0u, 1u, 2u, 3u, 111u, 333u, 444u, 0x80000000u, 0x0000ffffu, 0xf0000000u, 0xff000000u, 0xffffffffu};
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int clrsb[N] = {};
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int clz[N] = {};
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int ctz[N] = {};
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int ffs[N] = {};
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int parity[N] = {};
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int popcount[N] = {};
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int ref_clrsb[N] = {};
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int ref_clz[N] = {};
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int ref_ctz[N] = {};
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int ref_ffs[N] = {};
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int ref_parity[N] = {};
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int ref_popcount[N] = {};
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for (unsigned i = 0; i < N; i++)
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{
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ref_clrsb[i] = __builtin_clrsb (arguments[i]);
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ref_clz[i] = __builtin_clz (arguments[i]);
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ref_ctz[i] = __builtin_ctz (arguments[i]);
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ref_ffs[i] = __builtin_ffs (arguments[i]);
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ref_parity[i] = __builtin_parity (arguments[i]);
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ref_popcount[i] = __builtin_popcount (arguments[i]);
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}
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#pragma omp target map(from:clz, ctz, ffs, parity, popcount)
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{
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for (unsigned i = 0; i < N; i++)
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{
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clrsb[i] = __builtin_clrsb (arguments[i]);
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clz[i] = __builtin_clz (arguments[i]);
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ctz[i] = __builtin_ctz (arguments[i]);
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ffs[i] = __builtin_ffs (arguments[i]);
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parity[i] = __builtin_parity (arguments[i]);
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popcount[i] = __builtin_popcount (arguments[i]);
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}
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}
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for (unsigned i = 0; i < N; i++)
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if (ref_clrsb[i] != clrsb[i])
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__builtin_abort ();
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/* CLZ of zero is undefined for zero. */
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for (unsigned i = 1; i < N; i++)
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if (ref_clz[i] != clz[i])
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__builtin_abort ();
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/* Likewise for ctz */
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for (unsigned i = 1; i < N; i++)
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if (ref_ctz[i] != ctz[i])
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__builtin_abort ();
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for (unsigned i = 0; i < N; i++)
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if (ref_ffs[i] != ffs[i])
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__builtin_abort ();
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for (unsigned i = 0; i < N; i++)
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if (ref_parity[i] != parity[i])
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__builtin_abort ();
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for (unsigned i = 0; i < N; i++)
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if (ref_popcount[i] != popcount[i])
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__builtin_abort ();
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return 0;
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}
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