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https://github.com/stdlib-js/math-base-special-asindf

Compute the arcsine (in degrees) of a single-precision floating-point number.
https://github.com/stdlib-js/math-base-special-asindf

arcsine asin degree inverse javascript math mathematics node node-js nodejs radians sine stdlib trig trigonometry

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Compute the arcsine (in degrees) of a single-precision floating-point number.

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README 

        



  

    About stdlib...

  

  
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# asindf



[![NPM version][npm-image]][npm-url] [![Build Status][test-image]][test-url] [![Coverage Status][coverage-image]][coverage-url] 



> Compute the [arcsine][arcsine] (in degrees) of a single-precision floating-point number.



## Installation



```bash

npm install @stdlib/math-base-special-asindf

```



Alternatively,



-   To load the package in a website via a `script` tag without installation and bundlers, use the [ES Module][es-module] available on the [`esm`][esm-url] branch (see [README][esm-readme]).

-   If you are using Deno, visit the [`deno`][deno-url] branch (see [README][deno-readme] for usage intructions).

-   For use in Observable, or in browser/node environments, use the [Universal Module Definition (UMD)][umd] build available on the [`umd`][umd-url] branch (see [README][umd-readme]).



The [branches.md][branches-url] file summarizes the available branches and displays a diagram illustrating their relationships.



To view installation and usage instructions specific to each branch build, be sure to explicitly navigate to the respective README files on each branch, as linked to above.



## Usage



```javascript

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

```



#### asindf( x )



Computes the [arcsine][arcsine] (in degrees) of a single-precision floating-point number.



```javascript

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



var v = asindf( 0.0 );

// returns 0.0



v = asindf( 0.5 );

// returns ~30.0



v = asindf( sqrtf( 2.0 ) / 2.0 );

// returns ~45.0



v = asindf( sqrtf( 3.0 ) / 2.0 );

// returns ~60.0



v = asindf( NaN );

// returns NaN

```



The domain of `x` is restricted to `[-1,1]`. If `|x| > 1`, the function returns `NaN`.



```javascript

var v = asindf( -3.14 );

// returns NaN

```



## Examples



```javascript

var linspace = require( '@stdlib/array-base-linspace' );

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



var x = linspace( -1.0, 1.0, 100 );



var i;

for ( i = 0; i < x.length; i++ ) {

    console.log( asindf( x[ i ] ) );

}

```



* * *



## C APIs



### Usage



```c

#include "stdlib/math/base/special/asindf.h"

```



#### stdlib_base_asindf( x )



Computes the [arcsine][arcsine] (in degrees) of a single-precision floating-point number.



```c

float out = stdlib_base_asindf( 0.0f );

// returns 0.0f



out = stdlib_base_asindf( 0.5f );

// returns ~30.0f

```



The function accepts the following arguments:



-   **x**: `[in] float` input value.



```c

float stdlib_base_asindf( const float x );

```



### Examples



```c

#include "stdlib/math/base/special/asindf.h"

#include 



int main( void ) {

    const float x[] = { 1.0f, 0.45f, -0.89f, 0.33f, -0.78f, -0.22f, 0.66f, 0.11f, -0.55f, 0.0f };

    

    float v;

    int i;

    for ( i = 0; i < 10; i++ ) {

        v = stdlib_base_asindf( x[ i ] );

        printf( "asind(%f) = %f\n", x[ i ], v );

    }

}

```



* * *



## Notice



This package is part of [stdlib][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][stdlib], see the main project [repository][stdlib].



#### Community



[![Chat][chat-image]][chat-url]



---



## License



See [LICENSE][stdlib-license].



## Copyright



Copyright © 2016-2024. The Stdlib [Authors][stdlib-authors].



[npm-image]: http://img.shields.io/npm/v/@stdlib/math-base-special-asindf.svg

[npm-url]: https://npmjs.org/package/@stdlib/math-base-special-asindf



[test-image]: https://github.com/stdlib-js/math-base-special-asindf/actions/workflows/test.yml/badge.svg?branch=main

[test-url]: https://github.com/stdlib-js/math-base-special-asindf/actions/workflows/test.yml?query=branch:main



[coverage-image]: https://img.shields.io/codecov/c/github/stdlib-js/math-base-special-asindf/main.svg

[coverage-url]: https://codecov.io/github/stdlib-js/math-base-special-asindf?branch=main



[chat-image]: https://img.shields.io/gitter/room/stdlib-js/stdlib.svg

[chat-url]: https://app.gitter.im/#/room/#stdlib-js_stdlib:gitter.im



[stdlib]: https://github.com/stdlib-js/stdlib



[stdlib-authors]: https://github.com/stdlib-js/stdlib/graphs/contributors



[umd]: https://github.com/umdjs/umd

[es-module]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Modules



[deno-url]: https://github.com/stdlib-js/math-base-special-asindf/tree/deno

[deno-readme]: https://github.com/stdlib-js/math-base-special-asindf/blob/deno/README.md

[umd-url]: https://github.com/stdlib-js/math-base-special-asindf/tree/umd

[umd-readme]: https://github.com/stdlib-js/math-base-special-asindf/blob/umd/README.md

[esm-url]: https://github.com/stdlib-js/math-base-special-asindf/tree/esm

[esm-readme]: https://github.com/stdlib-js/math-base-special-asindf/blob/esm/README.md

[branches-url]: https://github.com/stdlib-js/math-base-special-asindf/blob/main/branches.md



[stdlib-license]: https://raw.githubusercontent.com/stdlib-js/math-base-special-asindf/main/LICENSE



[arcsine]: https://en.wikipedia.org/wiki/Inverse_trigonometric_functions