Antonio Maiorano ec20758675 tint: polyfill remainder to handle negative operands
Bug: tint:1802
Change-Id: Ie9baa045feda08523e5ca4f5ce94b6db7d4477e5
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/119100
Commit-Queue: Antonio Maiorano <amaiorano@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: Ben Clayton <bclayton@google.com>
2023-02-10 15:01:02 +00:00

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#include <metal_stdlib>
using namespace metal;
int tint_mod(int lhs, int rhs) {
int const rhs_or_one = select(rhs, 1, bool((rhs == 0) | bool((lhs == (-2147483647 - 1)) & (rhs == -1))));
if (any(((uint((lhs | rhs_or_one)) & 2147483648u) != 0u))) {
return as_type<int>((as_type<uint>(lhs) - as_type<uint>(as_type<int>((as_type<uint>((lhs / rhs_or_one)) * as_type<uint>(rhs_or_one))))));
} else {
return (lhs % rhs_or_one);
}
}
kernel void f() {
int const a = 1;
int const b = 2;
int const r = tint_mod(a, b);
return;
}