| var $ = require('../internals/export'); |
| var fails = require('../internals/fails'); |
| var expm1 = require('../internals/math-expm1'); |
| |
| var abs = Math.abs; |
| var exp = Math.exp; |
| var E = Math.E; |
| |
| var FORCED = fails(function () { |
| return Math.sinh(-2e-17) != -2e-17; |
| }); |
| |
| // `Math.sinh` method |
| // https://tc39.github.io/ecma262/#sec-math.sinh |
| // V8 near Chromium 38 has a problem with very small numbers |
| $({ target: 'Math', stat: true, forced: FORCED }, { |
| sinh: function sinh(x) { |
| return abs(x = +x) < 1 ? (expm1(x) - expm1(-x)) / 2 : (exp(x - 1) - exp(-x - 1)) * (E / 2); |
| } |
| }); |