411d5b44ef
This lets us check for a functioning rdrand() call in the stdlib more reliably. Fixes issue #333.
26 lines
578 B
Plaintext
26 lines
578 B
Plaintext
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export uniform int width() { return programCount; }
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export void f_f(uniform float RET[], uniform float aFOO[]) {
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#ifndef ISPC_HAS_RAND
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RET[programIndex] = 1;
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#else
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int lessHalf = 0, moreHalf = 0;
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for (uniform int i = 0; i < 1024*1024; ++i) {
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float r = -1;
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while (!rdrand(&r))
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;
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if (r < 0.5) ++lessHalf;
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else ++moreHalf;
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}
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float r = (double)lessHalf / (double)(lessHalf + moreHalf);
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RET[programIndex] = (r >= .49 && r < .51);
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#endif
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}
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export void result(uniform float RET[]) {
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RET[programIndex] = 1;
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}
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