Zig 0.17.0-dev (Split by item)

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divwide

udivmod.divwide

fn divwide(comptime T: type, _u1: T, _u0: T, v: T, r: *T) T

File

lib/compiler_rt/udivmod.zig:123

Code

fn divwide(comptime T: type, _u1: T, _u0: T, v: T, r: *T) T {
    @setRuntimeSafety(compiler_rt.test_safety);
    if (T == u64 and builtin.target.cpu.arch == .x86_64 and builtin.target.os.tag != .windows) {
        var rem: T = undefined;
        const quo = asm (
            \\divq %[v]
            : [_] "={rax}" (-> T),
              [_] "={rdx}" (rem),
            : [v] "r" (v),
              [_] "{rax}" (_u0),
              [_] "{rdx}" (_u1),
        );
        r.* = rem;
        return quo;
    } else {
        return divwide_generic(T, _u1, _u0, v, r);
    }
}