| #![cfg(not(test))] |
| |
| use libc::{c_double, c_float}; |
| |
| extern "C" { |
| pub fn acos(n: c_double) -> c_double; |
| pub fn asin(n: c_double) -> c_double; |
| pub fn atan(n: c_double) -> c_double; |
| pub fn atan2(a: c_double, b: c_double) -> c_double; |
| pub fn cbrt(n: c_double) -> c_double; |
| pub fn cbrtf(n: c_float) -> c_float; |
| pub fn cosh(n: c_double) -> c_double; |
| pub fn expm1(n: c_double) -> c_double; |
| pub fn expm1f(n: c_float) -> c_float; |
| pub fn fdim(a: c_double, b: c_double) -> c_double; |
| pub fn fdimf(a: c_float, b: c_float) -> c_float; |
| #[cfg_attr(target_env = "msvc", link_name = "_hypot")] |
| pub fn hypot(x: c_double, y: c_double) -> c_double; |
| #[cfg_attr(target_env = "msvc", link_name = "_hypotf")] |
| pub fn hypotf(x: c_float, y: c_float) -> c_float; |
| pub fn log1p(n: c_double) -> c_double; |
| pub fn log1pf(n: c_float) -> c_float; |
| pub fn sinh(n: c_double) -> c_double; |
| pub fn tan(n: c_double) -> c_double; |
| pub fn tanh(n: c_double) -> c_double; |
| } |
| |
| pub use self::shims::*; |
| |
| #[cfg(not(all(target_env = "msvc", target_arch = "x86")))] |
| mod shims { |
| use libc::c_float; |
| |
| extern "C" { |
| pub fn acosf(n: c_float) -> c_float; |
| pub fn asinf(n: c_float) -> c_float; |
| pub fn atan2f(a: c_float, b: c_float) -> c_float; |
| pub fn atanf(n: c_float) -> c_float; |
| pub fn coshf(n: c_float) -> c_float; |
| pub fn sinhf(n: c_float) -> c_float; |
| pub fn tanf(n: c_float) -> c_float; |
| pub fn tanhf(n: c_float) -> c_float; |
| } |
| } |
| |
| // On 32-bit x86 MSVC these functions aren't defined, so we just define shims |
| // which promote everything to f64, perform the calculation, and then demote |
| // back to f32. While not precisely correct should be "correct enough" for now. |
| #[cfg(all(target_env = "msvc", target_arch = "x86"))] |
| mod shims { |
| use libc::c_float; |
| |
| #[inline] |
| pub unsafe fn acosf(n: c_float) -> c_float { |
| f64::acos(n as f64) as c_float |
| } |
| |
| #[inline] |
| pub unsafe fn asinf(n: c_float) -> c_float { |
| f64::asin(n as f64) as c_float |
| } |
| |
| #[inline] |
| pub unsafe fn atan2f(n: c_float, b: c_float) -> c_float { |
| f64::atan2(n as f64, b as f64) as c_float |
| } |
| |
| #[inline] |
| pub unsafe fn atanf(n: c_float) -> c_float { |
| f64::atan(n as f64) as c_float |
| } |
| |
| #[inline] |
| pub unsafe fn coshf(n: c_float) -> c_float { |
| f64::cosh(n as f64) as c_float |
| } |
| |
| #[inline] |
| pub unsafe fn sinhf(n: c_float) -> c_float { |
| f64::sinh(n as f64) as c_float |
| } |
| |
| #[inline] |
| pub unsafe fn tanf(n: c_float) -> c_float { |
| f64::tan(n as f64) as c_float |
| } |
| |
| #[inline] |
| pub unsafe fn tanhf(n: c_float) -> c_float { |
| f64::tanh(n as f64) as c_float |
| } |
| } |