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UnrealEngine/Engine/Source/ThirdParty/Intel/ISPC/ispc-1.19.0/tests/rand-distrib-1.ispc
2025-05-18 13:04:45 +08:00

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#include "../test_static.isph"
task void f_fu(uniform float RET[], uniform float aFOO[], uniform float b) {
RNGState state;
seed_rng(&state, programIndex);
int count[32];
for (uniform int i = 0; i < 32; ++i)
count[i] = (b == 5.) ? 0 : 1;
uniform int iters = 10000;
for (uniform int i = 0; i < iters; ++i) {
unsigned int val = random(&state);
for (uniform int j = 0; j < 32; ++j) {
if (val & (1ul<<j))
++count[j];
}
}
bool ok = true;
for (uniform int i = 0; i < 32; ++i)
ok |= (count[i] > 0.495 * iters && count[i] < 0.505 * iters);
RET[programIndex] = ok ? 1 : 0;
}
task void result(uniform float RET[]) {
RET[programIndex] = 1;
}