23 lines
530 B
JavaScript
23 lines
530 B
JavaScript
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/**
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* Precision round
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*
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* @param {number} value
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* @param {number} step Minimal discrete to round
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*
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* @return {number}
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*
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* @example
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* toPrecision(213.34, 1) == 213
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* toPrecision(213.34, .1) == 213.3
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* toPrecision(213.34, 10) == 210
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*/
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'use strict';
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var precision = require('./precision');
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module.exports = function(value, step) {
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if (step === 0) return value;
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if (!step) return Math.round(value);
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value = Math.round(value / step) * step;
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return parseFloat(value.toFixed(precision(step)));
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};
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