2 // ignore-wasm32-bare no libc to test ffi with
4 #![feature(rustc_private)]
8 use libc::{c_double, c_int};
11 fn to_c_int(v: &mut isize) -> &mut c_int {
12 unsafe { mem::transmute_copy(&v) }
15 fn lgamma(n: c_double, value: &mut isize) -> c_double {
17 return m::lgamma(n, to_c_int(value));
22 use libc::{c_double, c_int};
25 #[cfg(all(unix, not(target_os = "vxworks")))]
26 #[link_name="lgamma_r"]
27 pub fn lgamma(n: c_double, sign: &mut c_int) -> c_double;
29 #[link_name = "lgamma"]
30 pub fn lgamma(n: c_double, sign: &mut c_int) -> c_double;
31 #[cfg(target_os = "vxworks")]
32 #[link_name = "lgamma"]
33 pub fn lgamma(n: c_double, sign: &mut c_int) -> c_double;
39 let x: &mut isize = &mut y;
40 assert_eq!(lgamma(1.0 as c_double, x), 0.0 as c_double);