toTimespec

pub fn toTimespec(t: Timeout, buf: *std.posix.timespec) ?*std.posix.timespec {
    return switch (t) {
        .none => null,
        .ms => |ms_u16| {
            const ms: isize = ms_u16;
            buf.* = .{
                .sec = @divTrunc(ms, std.time.ms_per_s),
                .nsec = @rem(ms, std.time.ms_per_s) * std.time.ns_per_ms,
            };
            return buf;
        },
    };
}