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__mulsi3

mulXi3.__mulsi3

pub fn __mulsi3(a: i32, b: i32) callconv(.c) i32

File

lib/compiler_rt/mulXi3.zig:18

Code

pub fn __mulsi3(a: i32, b: i32) callconv(.c) i32 {
    var ua: u32 = @bitCast(a);
    var ub: u32 = @bitCast(b);
    var r: u32 = 0;

    while (ua > 0) {
        if ((ua & 1) != 0) r +%= ub;
        ua >>= 1;
        ub <<= 1;
    }

    return @bitCast(r);
}