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UnrealEngine/Engine/Source/ThirdParty/Intel/ISPC/ispc-1.24.0/tests/uniform-float-rsqrt.ispc
2025-05-18 13:04:45 +08:00

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#include "../test_static.isph"
task void f_f(uniform float RET[], uniform float aFOO[]) {
uniform float x = aFOO[programCount/2];
uniform float d, invsqrt = rsqrt(x);
d = (x * (invsqrt * invsqrt)) - 1.;
if (d < 0.) d = -d;
RET[programIndex] = (d > 1e-5) ? 1 : 0;
}
task void result(uniform float RET[]) {
RET[programIndex] = 0;
}