Parse

File Parse decimal.js

Source

            
// Solution 2
Number.EPSILON = Math.pow(2, -52);
Math.sign = function(x) {
    return ((x > 0) - (x < 0)) || +x;
};

var DecimalPrecision = (function() {
    return {
        // Decimal round (half away from zero)
        round: function(num, decimalPlaces) {
            var p = Math.pow(10, decimalPlaces || 0);
            var n = (num * p) * (1 + Number.EPSILON);
            return Math.round(n) / p;
        },
        // Decimal ceil
        ceil: function(num, decimalPlaces) {
            var p = Math.pow(10, decimalPlaces || 0);
            var n = (num * p) * (1 - Math.sign(num) * Number.EPSILON);
            return Math.ceil(n) / p;
        },
        // Decimal floor
        floor: function(num, decimalPlaces) {
            var p = Math.pow(10, decimalPlaces || 0);
            var n = (num * p) * (1 + Math.sign(num) * Number.EPSILON);
            return Math.floor(n) / p;
        },
        // Decimal trunc
        trunc: function(num, decimalPlaces) {
            return (num < 0 ? this.ceil : this.floor)(num, decimalPlaces);
        },
        // Format using fixed-point notation
        toFixed: function(num, decimalPlaces) {
            return this.round(num, decimalPlaces).toFixed(decimalPlaces);
        }
    };
})();




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