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Implement Math.min() and Math.max() bindings (#542)

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* Add Number.isNaN() binding

* Add binding for Math.hypot()

* Implement Math.min() and Math.max() bindings
This commit is contained in:
Tyler Wilcock 2018-07-23 23:50:29 -05:00 committed by Alex Crichton
parent f437e06463
commit cefe1681ab
2 changed files with 30 additions and 0 deletions
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12
crates/js-sys/src/lib.rs
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@ -1191,6 +1191,18 @@ extern "C" {
#[wasm_bindgen(static_method_of = Math)]
pub fn log2(x: f64) -> f64;
/// The Math.max() function returns the largest of two numbers.
///
/// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/max
#[wasm_bindgen(static_method_of = Math)]
pub fn max(x: f64, y: f64) -> f64;
/// The static function Math.min() returns the lowest-valued number passed into it.
///
/// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/min
#[wasm_bindgen(static_method_of = Math)]
pub fn min(x: f64, y: f64) -> f64;
/// The Math.pow() function returns the base to the exponent power, that is, base^exponent.
///
/// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/pow

18
crates/js-sys/tests/wasm/Math.rs
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@ -172,6 +172,24 @@ fn log2() {
assert_eq!(Math::log2(0.), NEG_INFINITY);
}
#[wasm_bindgen_test]
fn max() {
assert_eq!(Math::max(3., 1.), 3.);
assert_eq!(Math::max(-3., 1.), 1.);
assert_eq!(Math::max(9913., 43.4), 9913.);
assert_eq!(Math::max(-27., -43.), -27.);
assert_eq!(Math::max(-423.27, -43.1), -43.1);
}
#[wasm_bindgen_test]
fn min() {
assert_eq!(Math::min(3., 1.), 1.);
assert_eq!(Math::min(-3., 1.), -3.);
assert_eq!(Math::min(9913., 43.4), 43.4);
assert_eq!(Math::min(-27., -43.), -43.);
assert_eq!(Math::min(-423.27, -43.1), -423.27);
}
#[wasm_bindgen_test]
fn pow() {
assert_eq!(Math::pow(7., 2.), 49.);