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| // 20.2.2.33 Math.tanh(x)
| var $export = require('./_export');
| var expm1 = require('./_math-expm1');
| var exp = Math.exp;
|
| $export($export.S, 'Math', {
| tanh: function tanh(x) {
| var a = expm1(x = +x);
| var b = expm1(-x);
| return a == Infinity ? 1 : b == Infinity ? -1 : (a - b) / (exp(x) + exp(-x));
| }
| });
|
|
