diff options
Diffstat (limited to 'src/libstd/sys')
| -rw-r--r-- | src/libstd/sys/wasm/cmath.rs | 29 |
1 files changed, 1 insertions, 28 deletions
diff --git a/src/libstd/sys/wasm/cmath.rs b/src/libstd/sys/wasm/cmath.rs index 87ac2091cad..64fc14d42d9 100644 --- a/src/libstd/sys/wasm/cmath.rs +++ b/src/libstd/sys/wasm/cmath.rs @@ -74,46 +74,19 @@ pub unsafe fn tanhf(n: f32) -> f32 { f64::tanh(n as f64) as f32 } -// Right now all these functions, the f64 version of the functions above, all -// shell out to random names. These names aren't actually defined anywhere, per -// se, but we need this to compile somehow. -// -// The idea with this is that when you're using wasm then, for now, we have no -// way of providing an implementation of these which delegates to a "correct" -// implementation. For example most wasm applications probably just want to -// delegate to the javascript `Math` object and its related functions, but wasm -// doesn't currently have the ability to seamlessly do that (when you -// instantiate a module you have to set that up). -// -// As a result these are just defined here with "hopefully helpful" names. The -// symbols won't ever be needed or show up unless these functions are called, -// and hopefully when they're called the errors are self-explanatory enough to -// figure out what's going on. - +// These symbols are all defined in `compiler-builtins` extern { - #[link_name = "Math_acos"] pub fn acos(n: f64) -> f64; - #[link_name = "Math_asin"] pub fn asin(n: f64) -> f64; - #[link_name = "Math_atan"] pub fn atan(n: f64) -> f64; - #[link_name = "Math_atan2"] pub fn atan2(a: f64, b: f64) -> f64; - #[link_name = "Math_cbrt"] pub fn cbrt(n: f64) -> f64; - #[link_name = "Math_cosh"] pub fn cosh(n: f64) -> f64; - #[link_name = "Math_expm1"] pub fn expm1(n: f64) -> f64; pub fn fdim(a: f64, b: f64) -> f64; - #[link_name = "Math_log1p"] pub fn log1p(n: f64) -> f64; - #[link_name = "Math_sinh"] pub fn sinh(n: f64) -> f64; - #[link_name = "Math_tan"] pub fn tan(n: f64) -> f64; - #[link_name = "Math_tanh"] pub fn tanh(n: f64) -> f64; - #[link_name = "Math_hypot"] pub fn hypot(x: f64, y: f64) -> f64; } |