Calculate the hyperbolic tangent of a number
npm install tanhCalculate the hyperbolic tangent of a number.
`` javascript
const tanh = require('tanh');
tanh(1);
// => 0.7615941559557649
`
` bash`
$ npm install tanh
` javascript`
const tanh = require('tanh');
Given a _Number_ x, returns the hyperbolic tangent of x` as a _Number_.