34 lines
736 B
JavaScript
34 lines
736 B
JavaScript
/* global Float32Array */
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// Credit: https://github.com/paulmillr/es6-shim/blob/master/es6-shim.js
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"use strict";
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var toFloat32;
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if (typeof Float32Array === "undefined") {
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toFloat32 = (function () {
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var pack = require("../_pack-ieee754")
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, unpack = require("../_unpack-ieee754");
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return function (value) { return unpack(pack(value, 8, 23), 8, 23); };
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})();
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} else {
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toFloat32 = (function () {
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var float32Array = new Float32Array(1);
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return function (num) {
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float32Array[0] = num;
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return float32Array[0];
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};
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})();
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}
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module.exports = function (value) {
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if (isNaN(value)) return NaN;
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value = Number(value);
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if (value === 0) return value;
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if (!isFinite(value)) return value;
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return toFloat32(value);
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};
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