diff --git a/src/js.rs b/src/js.rs index 99d21288..094f80fe 100644 --- a/src/js.rs +++ b/src/js.rs @@ -286,6 +286,14 @@ extern { #[wasm_bindgen(static_method_of = Math)] pub fn atan2(y: i32, x: i32) -> Number; + /// The Math.atanh() function returns the hyperbolic arctangent of a number, + /// that is ∀x ∊ (-1,1), Math.atanh(x) = arctanh(x) = the unique y such that + /// tanh(y) = x + /// + /// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/atanh + #[wasm_bindgen(static_method_of = Math)] + pub fn atanh(x: i32) -> Number; + } // Number. diff --git a/tests/all/js_globals/Math.rs b/tests/all/js_globals/Math.rs index 9026b158..de520b52 100644 --- a/tests/all/js_globals/Math.rs +++ b/tests/all/js_globals/Math.rs @@ -186,3 +186,29 @@ fn atan2() { "#) .test() } + +#[test] +fn atanh() { + project() + .file("src/lib.rs", r#" + #![feature(proc_macro, wasm_custom_section)] + + extern crate wasm_bindgen; + use wasm_bindgen::prelude::*; + use wasm_bindgen::js; + + #[wasm_bindgen] + pub fn atanh(x: i32) -> js::Number { + js::Math::atanh(x) + } + "#) + .file("test.ts", r#" + import * as assert from "assert"; + import * as wasm from "./out"; + + export function test() { + assert.equal(wasm.atanh(1), Math.atanh(1)); + } + "#) + .test() +}