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import libc::{c_double, c_int}; import f64::*; fn lgamma(n: c_double, value: &mut int) -> c_double { ret m::lgamma(n, value as &mut c_int); } #[link_name = "m"] #[abi = "cdecl"] native mod m { #[link_name="lgamma_r"] fn lgamma(n: c_double, sign: &mut c_int) -> c_double; } fn main() { let mut y: int = 5; let x: &mut int = &mut y; assert (lgamma(1.0 as c_double, x) == 0.0 as c_double); }