1 // Copyright 2017 The Rust Project Developers. See the COPYRIGHT
2 // file at the top-level directory of this distribution and at
3 // http://rust-lang.org/COPYRIGHT.
5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
8 // option. This file may not be copied, modified, or distributed
9 // except according to those terms.
12 pub unsafe fn cbrtf(n: f32) -> f32 {
13 f64::cbrt(n as f64) as f32
17 pub unsafe fn expm1f(n: f32) -> f32 {
18 f64::exp_m1(n as f64) as f32
23 pub unsafe fn fdimf(a: f32, b: f32) -> f32 {
24 f64::abs_sub(a as f64, b as f64) as f32
28 pub unsafe fn log1pf(n: f32) -> f32 {
29 f64::ln_1p(n as f64) as f32
33 pub unsafe fn hypotf(x: f32, y: f32) -> f32 {
34 f64::hypot(x as f64, y as f64) as f32
38 pub unsafe fn acosf(n: f32) -> f32 {
39 f64::acos(n as f64) as f32
43 pub unsafe fn asinf(n: f32) -> f32 {
44 f64::asin(n as f64) as f32
48 pub unsafe fn atan2f(n: f32, b: f32) -> f32 {
49 f64::atan2(n as f64, b as f64) as f32
53 pub unsafe fn atanf(n: f32) -> f32 {
54 f64::atan(n as f64) as f32
58 pub unsafe fn coshf(n: f32) -> f32 {
59 f64::cosh(n as f64) as f32
63 pub unsafe fn sinhf(n: f32) -> f32 {
64 f64::sinh(n as f64) as f32
68 pub unsafe fn tanf(n: f32) -> f32 {
69 f64::tan(n as f64) as f32
73 pub unsafe fn tanhf(n: f32) -> f32 {
74 f64::tanh(n as f64) as f32
77 // Right now all these functions, the f64 version of the functions above, all
78 // shell out to random names. These names aren't actually defined anywhere, per
79 // se, but we need this to compile somehow.
81 // The idea with this is that when you're using wasm then, for now, we have no
82 // way of providing an implementation of these which delegates to a "correct"
83 // implementation. For example most wasm applications probably just want to
84 // delegate to the javascript `Math` object and its related functions, but wasm
85 // doesn't currently have the ability to seamlessly do that (when you
86 // instantiate a module you have to set that up).
88 // As a result these are just defined here with "hopefully helpful" names. The
89 // symbols won't ever be needed or show up unless these functions are called,
90 // and hopefully when they're called the errors are self-explanatory enough to
91 // figure out what's going on.
94 #[link_name = "Math_acos"]
95 pub fn acos(n: f64) -> f64;
96 #[link_name = "Math_asin"]
97 pub fn asin(n: f64) -> f64;
98 #[link_name = "Math_atan"]
99 pub fn atan(n: f64) -> f64;
100 #[link_name = "Math_atan2"]
101 pub fn atan2(a: f64, b: f64) -> f64;
102 #[link_name = "Math_cbrt"]
103 pub fn cbrt(n: f64) -> f64;
104 #[link_name = "Math_cosh"]
105 pub fn cosh(n: f64) -> f64;
106 #[link_name = "Math_expm1"]
107 pub fn expm1(n: f64) -> f64;
108 pub fn fdim(a: f64, b: f64) -> f64;
109 #[link_name = "Math_log1p"]
110 pub fn log1p(n: f64) -> f64;
111 #[link_name = "Math_sinh"]
112 pub fn sinh(n: f64) -> f64;
113 #[link_name = "Math_tan"]
114 pub fn tan(n: f64) -> f64;
115 #[link_name = "Math_tanh"]
116 pub fn tanh(n: f64) -> f64;
117 #[link_name = "Math_hypot"]
118 pub fn hypot(x: f64, y: f64) -> f64;