3 use libc::{c_float, c_double};
7 pub fn acos(n: c_double) -> c_double;
8 pub fn asin(n: c_double) -> c_double;
9 pub fn atan(n: c_double) -> c_double;
10 pub fn atan2(a: c_double, b: c_double) -> c_double;
11 pub fn cbrt(n: c_double) -> c_double;
12 pub fn cbrtf(n: c_float) -> c_float;
13 pub fn cosh(n: c_double) -> c_double;
14 pub fn expm1(n: c_double) -> c_double;
15 pub fn expm1f(n: c_float) -> c_float;
16 pub fn fdim(a: c_double, b: c_double) -> c_double;
17 pub fn fdimf(a: c_float, b: c_float) -> c_float;
18 #[cfg_attr(target_env = "msvc", link_name = "_hypot")]
19 pub fn hypot(x: c_double, y: c_double) -> c_double;
20 #[cfg_attr(target_env = "msvc", link_name = "_hypotf")]
21 pub fn hypotf(x: c_float, y: c_float) -> c_float;
22 pub fn log1p(n: c_double) -> c_double;
23 pub fn log1pf(n: c_float) -> c_float;
24 pub fn sinh(n: c_double) -> c_double;
25 pub fn tan(n: c_double) -> c_double;
26 pub fn tanh(n: c_double) -> c_double;
29 pub use self::shims::*;
31 #[cfg(not(target_env = "msvc"))]
36 pub fn acosf(n: c_float) -> c_float;
37 pub fn asinf(n: c_float) -> c_float;
38 pub fn atan2f(a: c_float, b: c_float) -> c_float;
39 pub fn atanf(n: c_float) -> c_float;
40 pub fn coshf(n: c_float) -> c_float;
41 pub fn sinhf(n: c_float) -> c_float;
42 pub fn tanf(n: c_float) -> c_float;
43 pub fn tanhf(n: c_float) -> c_float;
47 // On MSVC these functions aren't defined, so we just define shims which promote
48 // everything fo f64, perform the calculation, and then demote back to f32.
49 // While not precisely correct should be "correct enough" for now.
50 #[cfg(target_env = "msvc")]
55 pub unsafe fn acosf(n: c_float) -> c_float {
56 f64::acos(n as f64) as c_float
60 pub unsafe fn asinf(n: c_float) -> c_float {
61 f64::asin(n as f64) as c_float
65 pub unsafe fn atan2f(n: c_float, b: c_float) -> c_float {
66 f64::atan2(n as f64, b as f64) as c_float
70 pub unsafe fn atanf(n: c_float) -> c_float {
71 f64::atan(n as f64) as c_float
75 pub unsafe fn coshf(n: c_float) -> c_float {
76 f64::cosh(n as f64) as c_float
80 pub unsafe fn sinhf(n: c_float) -> c_float {
81 f64::sinh(n as f64) as c_float
85 pub unsafe fn tanf(n: c_float) -> c_float {
86 f64::tan(n as f64) as c_float
90 pub unsafe fn tanhf(n: c_float) -> c_float {
91 f64::tanh(n as f64) as c_float