# @stdlib/math-base-special-asinh

0.2.3 • Public • Published

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# asinh

Compute the hyperbolic arcsine of a double-precision floating-point number.

## Installation

`npm install @stdlib/math-base-special-asinh`

## Usage

`var asinh = require( '@stdlib/math-base-special-asinh' );`

#### asinh( x )

Computes the hyperbolic arcsine of a double-precision floating-point number.

```var v = asinh( 0.0 );
// returns 0.0

v = asinh( -0.0 );
// returns -0.0

v = asinh( 2.0 );
// returns ~1.444

v = asinh( -2.0 );
// returns ~-1.444

v = asinh( NaN );
// returns NaN

v = asinh( -Infinity );
// returns -Infinity

v = asinh( Infinity );
// returns Infinity```

## Examples

```var linspace = require( '@stdlib/array-base-linspace' );
var asinh = require( '@stdlib/math-base-special-asinh' );

var x = linspace( -5.0, 5.0, 100 );

var i;
for ( i = 0; i < x.length; i++ ) {
console.log( asinh( x[ i ] ) );
}```

## C APIs

### Usage

`#include "stdlib/math/base/special/asinh.h"`

#### stdlib_base_asinh( x )

Computes the hyperbolic arcsine of a double-precision floating-point number.

```double out = stdlib_base_asinh( 2.0 );
// returns ~1.444

out = stdlib_base_asinh( -2.0 );
// returns ~-1.444```

The function accepts the following arguments:

• x: `[in] double` input value.
`double stdlib_base_asinh( const double x );`

### Examples

```#include "stdlib/math/base/special/asinh.h"
#include <stdio.h>

int main( void ) {
const double x[] = { -5.0, -3.89, -2.78, -1.67, -0.55, 0.55, 1.67, 2.78, 3.89, 5.0 };

double v;
int i;
for ( i = 0; i < 10; i++ ) {
v = stdlib_base_asinh( x[ i ] );
printf( "asinh(%lf) = %lf\n", x[ i ], v );
}
}```

## Notice

This package is part of stdlib, a standard library for JavaScript and Node.js, with an emphasis on numerical and scientific computing. The library provides a collection of robust, high performance libraries for mathematics, statistics, streams, utilities, and more.

For more information on the project, filing bug reports and feature requests, and guidance on how to develop stdlib, see the main project repository.

## Package Sidebar

### Install

`npm i @stdlib/math-base-special-asinh`

### Repository

github.com/stdlib-js/math-base-special-asinh

stdlib.io

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