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https://github.com/shaka-project/shaka-player.git
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vodlogic
52f18df21b
This change allows polyfills to be installed individually e.g. shaka.polyfill.MediaCapabilities.install() instead of shaka.polyfill.installAll() Related to #2625
50 lines
1.2 KiB
JavaScript
50 lines
1.2 KiB
JavaScript
/*! @license
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* Shaka Player
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* Copyright 2016 Google LLC
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* SPDX-License-Identifier: Apache-2.0
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*/
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goog.provide('shaka.polyfill.MathRound');
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goog.require('shaka.log');
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goog.require('shaka.polyfill');
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/**
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* @summary A polyfill to patch math round bug on some browsers.
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* @see https://stackoverflow.com/q/12830742
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* @export
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*/
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shaka.polyfill.MathRound = class {
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/**
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* Install the polyfill if needed.
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* @export
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*/
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static install() {
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shaka.log.debug('mathRound.install');
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const testNumber = shaka.polyfill.MathRound.MAX_ACCURATE_INPUT_ + 1;
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if (Math.round(testNumber) != testNumber) {
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shaka.log.debug('polyfill Math.round');
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const originalMathRound = Math.round;
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Math.round = (number) => {
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let result = number;
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// Due to the precision of JavaScript numbers, the number must be
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// integer.
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if (number <= shaka.polyfill.MathRound.MAX_ACCURATE_INPUT_) {
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result = originalMathRound(number);
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}
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return result;
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};
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}
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}
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};
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/**
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@const {number}
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@private
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*/
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shaka.polyfill.MathRound.MAX_ACCURATE_INPUT_ = 0x10000000000000;
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shaka.polyfill.register(shaka.polyfill.MathRound.install);
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