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

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#include "../test_static.isph"
bool ok(float x, float ref) { return (abs(x - ref) < 1e-4) || abs((x-ref)/ref) < 1e-4; }
task void f_v(uniform float RET[]) {
uniform float vals[8] = { 0, 1, 0.5, -1, -.87, -.25, 1e-3, -.99999999 };
uniform float r[8];
foreach (i = 0 ... 8) {
// TODO: Possible optimization opportunity.
#pragma ignore warning(perf)
r[i] = cos(acos(vals[i % 8]));
}
int errors = 0;
for (uniform int i = 0; i < 8; ++i) {
if (ok(r[i], vals[i%8]) == false) {
++errors;
}
}
RET[programIndex] = errors;
}
task void result(uniform float RET[]) { RET[programIndex] = 0; }