/*! @license
* Shaka Player
* Copyright 2016 Google LLC
* SPDX-License-Identifier: Apache-2.0
*/
goog.provide('shaka.polyfill.MathRound');
goog.require('shaka.log');
goog.require('shaka.polyfill');
/**
* @summary A polyfill to patch math round bug on some browsers.
* @see https://stackoverflow.com/q/12830742
* @export
*/
shaka.polyfill.MathRound = class {
/**
* Install the polyfill if needed.
* @export
*/
static install() {
shaka.log.debug('mathRound.install');
const testNumber = shaka.polyfill.MathRound.MAX_ACCURATE_INPUT_ + 1;
if (Math.round(testNumber) != testNumber) {
shaka.log.debug('polyfill Math.round');
const originalMathRound = Math.round;
Math.round = (number) => {
let result = number;
// Due to the precision of JavaScript numbers, the number must be
// integer.
if (number <= shaka.polyfill.MathRound.MAX_ACCURATE_INPUT_) {
result = originalMathRound(number);
}
return result;
};
}
}
};
/**
@const {number}
@private
*/
shaka.polyfill.MathRound.MAX_ACCURATE_INPUT_ = 0x10000000000000;
shaka.polyfill.register(shaka.polyfill.MathRound.install);