PHP's atanh in TypeScript

How to use

Install via yarn add locutus and import: import { atanh } from 'locutus/php/math/atanh'.

Or with CommonJS: const { atanh } = require('locutus/php/math/atanh')

Use a bundler that supports tree-shaking so you only ship the functions you actually use. Vite, webpack, Rollup, and Parcel all handle this. For server-side use this is less of a concern.

Examples

These examples are extracted from test cases that automatically verify our functions against their native counterparts.

#	code	expected result
1	atanh(0.3)	0.3095196042031118

Here's what our current TypeScript equivalent to PHP's atanh looks like.

TSTypeScript JSJavaScript TSStandalone TS JSStandalone JS

Copy code

export function atanh(arg: number): number {
  //  discuss at: https://locutus.io/php/atanh/
  // original by: Onno Marsman (https://twitter.com/onnomarsman)
  //   example 1: atanh(0.3)
  //   returns 1: 0.3095196042031118

  return 0.5 * Math.log((1 + arg) / (1 - arg))
}

export function atanh(arg) {
  //  discuss at: https://locutus.io/php/atanh/
  // original by: Onno Marsman (https://twitter.com/onnomarsman)
  //   example 1: atanh(0.3)
  //   returns 1: 0.3095196042031118

  return 0.5 * Math.log((1 + arg) / (1 - arg))
}

Improve this function

Locutus is a community effort following The McDonald's Theory: we ship first iterations, hoping others will improve them. If you see something that could be better, we'd love your contribution.

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