Merge pull request #248 from japaric/libm

expose math symbols on wasm32-unknown-unknown
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Alex Crichton 2018-07-18 12:08:14 -05:00 committed by GitHub
commit b4a3645cfe
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5 changed files with 62 additions and 0 deletions

3
.gitmodules vendored
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@ -1,3 +1,6 @@
[submodule "compiler-rt"]
path = compiler-rt
url = https://github.com/rust-lang/compiler-rt
[submodule "libm"]
path = libm
url = https://github.com/japaric/libm

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@ -25,6 +25,9 @@ matrix:
- env: TARGET=thumbv7em-linux-eabi
- env: TARGET=thumbv7em-linux-eabihf
- env: TARGET=thumbv7m-linux-eabi
- env: TARGET=wasm32-unknown-unknown
install: rustup target add $TARGET
script: cargo build --target $TARGET
- env: TARGET=x86_64-apple-darwin
os: osx
- env: TARGET=x86_64-unknown-linux-gnu

1
libm Submodule

@ -0,0 +1 @@
Subproject commit d65f60f24289ba212f5d47792f7236857efb2339

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@ -48,6 +48,9 @@ pub mod int;
pub mod float;
pub mod mem;
// only for the wasm32-unknown-unknown target
#[cfg(all(target_arch = "wasm32", target_os = "unknown"))]
pub mod math;
#[cfg(target_arch = "arm")]
pub mod arm;

52
src/math.rs Normal file
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#[allow(dead_code)]
#[path = "../libm/src/math/mod.rs"]
mod libm;
macro_rules! no_mangle {
($(fn $fun:ident($($iid:ident : $ity:ty),+) -> $oty:ty;)+) => {
intrinsics! {
$(
pub extern "C" fn $fun($($iid: $ity),+) -> $oty {
self::libm::$fun($($iid),+)
}
)+
}
}
}
no_mangle! {
fn acos(x: f64) -> f64;
fn asin(x: f64) -> f64;
fn atan(x: f64) -> f64;
fn atan2(x: f64, y: f64) -> f64;
fn cbrt(x: f64) -> f64;
fn cosh(x: f64) -> f64;
fn expm1(x: f64) -> f64;
fn hypot(x: f64, y: f64) -> f64;
fn log1p(x: f64) -> f64;
fn sinh(x: f64) -> f64;
fn tan(x: f64) -> f64;
fn tanh(x: f64) -> f64;
fn cos(x: f64) -> f64;
fn cosf(x: f32) -> f32;
fn exp(x: f64) -> f64;
fn expf(x: f32) -> f32;
fn log2(x: f64) -> f64;
fn log2f(x: f32) -> f32;
fn log10(x: f64) -> f64;
fn log10f(x: f32) -> f32;
fn log(x: f64) -> f64;
fn logf(x: f32) -> f32;
fn round(x: f64) -> f64;
fn roundf(x: f32) -> f32;
fn sin(x: f64) -> f64;
fn sinf(x: f32) -> f32;
fn pow(x: f64, y: f64) -> f64;
fn powf(x: f32, y: f32) -> f32;
fn exp2(x: f64) -> f64;
fn exp2f(x: f32) -> f32;
fn fmod(x: f64, y: f64) -> f64;
fn fmodf(x: f32, y: f32) -> f32;
fn fma(x: f64, y: f64, z: f64) -> f64;
fn fmaf(x: f32, y: f32, z: f32) -> f32;
}