| #![cfg(not(test))] |
| |
| // These symbols are all defined by `libm`, |
| // or by `compiler-builtins` on unsupported platforms. |
| extern "C" { |
| pub fn acos(n: f64) -> f64; |
| pub fn asin(n: f64) -> f64; |
| pub fn atan(n: f64) -> f64; |
| pub fn atan2(a: f64, b: f64) -> f64; |
| pub fn cbrt(n: f64) -> f64; |
| pub fn cbrtf(n: f32) -> f32; |
| pub fn cosh(n: f64) -> f64; |
| pub fn expm1(n: f64) -> f64; |
| pub fn expm1f(n: f32) -> f32; |
| pub fn fdim(a: f64, b: f64) -> f64; |
| pub fn fdimf(a: f32, b: f32) -> f32; |
| #[cfg_attr(target_env = "msvc", link_name = "_hypot")] |
| pub fn hypot(x: f64, y: f64) -> f64; |
| #[cfg_attr(target_env = "msvc", link_name = "_hypotf")] |
| pub fn hypotf(x: f32, y: f32) -> f32; |
| pub fn log1p(n: f64) -> f64; |
| pub fn log1pf(n: f32) -> f32; |
| pub fn sinh(n: f64) -> f64; |
| pub fn tan(n: f64) -> f64; |
| pub fn tanh(n: f64) -> f64; |
| pub fn tgamma(n: f64) -> f64; |
| pub fn tgammaf(n: f32) -> f32; |
| pub fn lgamma_r(n: f64, s: &mut i32) -> f64; |
| pub fn lgammaf_r(n: f32, s: &mut i32) -> f32; |
| |
| cfg_if::cfg_if! { |
| if #[cfg(not(all(target_os = "windows", target_env = "msvc", target_arch = "x86")))] { |
| pub fn acosf(n: f32) -> f32; |
| pub fn asinf(n: f32) -> f32; |
| pub fn atan2f(a: f32, b: f32) -> f32; |
| pub fn atanf(n: f32) -> f32; |
| pub fn coshf(n: f32) -> f32; |
| pub fn sinhf(n: f32) -> f32; |
| pub fn tanf(n: f32) -> f32; |
| pub fn tanhf(n: f32) -> f32; |
| }} |
| } |
| |
| // 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_if::cfg_if! { |
| if #[cfg(all(target_os = "windows", target_env = "msvc", target_arch = "x86"))] { |
| #[inline] |
| pub unsafe fn acosf(n: f32) -> f32 { |
| f64::acos(n as f64) as f32 |
| } |
| |
| #[inline] |
| pub unsafe fn asinf(n: f32) -> f32 { |
| f64::asin(n as f64) as f32 |
| } |
| |
| #[inline] |
| pub unsafe fn atan2f(n: f32, b: f32) -> f32 { |
| f64::atan2(n as f64, b as f64) as f32 |
| } |
| |
| #[inline] |
| pub unsafe fn atanf(n: f32) -> f32 { |
| f64::atan(n as f64) as f32 |
| } |
| |
| #[inline] |
| pub unsafe fn coshf(n: f32) -> f32 { |
| f64::cosh(n as f64) as f32 |
| } |
| |
| #[inline] |
| pub unsafe fn sinhf(n: f32) -> f32 { |
| f64::sinh(n as f64) as f32 |
| } |
| |
| #[inline] |
| pub unsafe fn tanf(n: f32) -> f32 { |
| f64::tan(n as f64) as f32 |
| } |
| |
| #[inline] |
| pub unsafe fn tanhf(n: f32) -> f32 { |
| f64::tanh(n as f64) as f32 |
| } |
| }} |
