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Validark/cls.zig

Created June 11, 2024 12:29
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`cls` on Arm
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cls.zig
export fn cls(e: u64) @TypeOf(e) {
const e2: @TypeOf(e) = @bitCast(@as(std.meta.Int(.signed, @bitSizeOf(@TypeOf(e))), @bitCast(e)) >> (@bitSizeOf(@TypeOf(e)) - 1));
return @clz(((e ^ e2) << 1) | 1);
}
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