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var root = require('./_root'), |
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toInteger = require('./toInteger'), |
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toNumber = require('./toNumber'), |
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toString = require('./toString'); |
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var nativeIsFinite = root.isFinite, |
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nativeMin = Math.min; |
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function createRound(methodName) { |
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var func = Math[methodName]; |
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return function(number, precision) { |
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number = toNumber(number); |
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precision = precision == null ? 0 : nativeMin(toInteger(precision), 292); |
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if (precision && nativeIsFinite(number)) { |
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var pair = (toString(number) + 'e').split('e'), |
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value = func(pair[0] + 'e' + (+pair[1] + precision)); |
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pair = (toString(value) + 'e').split('e'); |
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return +(pair[0] + 'e' + (+pair[1] - precision)); |
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} |
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return func(number); |
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}; |
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} |
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module.exports = createRound; |
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