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- // 20.2.2.16 Math.fround(x)
- var sign = require('./_math-sign');
- var pow = Math.pow;
- var EPSILON = pow(2, -52);
- var EPSILON32 = pow(2, -23);
- var MAX32 = pow(2, 127) * (2 - EPSILON32);
- var MIN32 = pow(2, -126);
- var roundTiesToEven = function (n) {
- return n + 1 / EPSILON - 1 / EPSILON;
- };
- module.exports = Math.fround || function fround(x) {
- var $abs = Math.abs(x);
- var $sign = sign(x);
- var a, result;
- if ($abs < MIN32) return $sign * roundTiesToEven($abs / MIN32 / EPSILON32) * MIN32 * EPSILON32;
- a = (1 + EPSILON32 / EPSILON) * $abs;
- result = a - (a - $abs);
- // eslint-disable-next-line no-self-compare
- if (result > MAX32 || result != result) return $sign * Infinity;
- return $sign * result;
- };
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