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cd80994a72b7d59ad59f3cf1b760dc8002c5f8f5
[platform/framework/web/crosswalk-tizen.git]
/
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'use strict';
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var log = Math.log, LOG2E = Math.LOG2E;
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module.exports = function (x) {
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if (isNaN(x)) return NaN;
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x = Number(x);
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if (x < 0) return NaN;
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if (x === 0) return -Infinity;
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if (x === 1) return 0;
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if (x === Infinity) return Infinity;
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return log(x) * LOG2E;
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};