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- 'use strict';
- var sign = require('../internals/math-sign');
-
- var abs = Math.abs;
-
- var EPSILON = 2.220446049250313e-16; // Number.EPSILON
- var INVERSE_EPSILON = 1 / EPSILON;
-
- var roundTiesToEven = function (n) {
- return n + INVERSE_EPSILON - INVERSE_EPSILON;
- };
-
- module.exports = function (x, FLOAT_EPSILON, FLOAT_MAX_VALUE, FLOAT_MIN_VALUE) {
- var n = +x;
- var absolute = abs(n);
- var s = sign(n);
- if (absolute < FLOAT_MIN_VALUE) return s * roundTiesToEven(absolute / FLOAT_MIN_VALUE / FLOAT_EPSILON) * FLOAT_MIN_VALUE * FLOAT_EPSILON;
- var a = (1 + FLOAT_EPSILON / EPSILON) * absolute;
- var result = a - (a - absolute);
- // eslint-disable-next-line no-self-compare -- NaN check
- if (result > FLOAT_MAX_VALUE || result !== result) return s * Infinity;
- return s * result;
- };
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