Sha256: 080209086ec31287108eb7b4a2a38d7f7e3c8acf8a2a0ecd1b883c3d06d44709
Contents?: true
Size: 450 Bytes
Versions: 15
Compression:
Stored size: 450 Bytes
Contents
// Parts of implementation taken from es6-shim project
// See: https://github.com/paulmillr/es6-shim/blob/master/es6-shim.js
'use strict';
var expm1 = require('../expm1')
, abs = Math.abs, exp = Math.exp, e = Math.E;
module.exports = function (x) {
if (isNaN(x)) return NaN;
x = Number(x);
if (x === 0) return x;
if (!isFinite(x)) return x;
if (abs(x) < 1) return (expm1(x) - expm1(-x)) / 2;
return (exp(x - 1) - exp(-x - 1)) * e / 2;
};
Version data entries
15 entries across 12 versions & 6 rubygems