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

Return a single-precision complex floating-point number with the same magnitude as `z` and the sign of `y*z`.
https://github.com/stdlib-js/math-base-special-cflipsignf

cmplx complex flipsign javascript math mathematics node node-js nodejs number stdlib

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Return a single-precision complex floating-point number with the same magnitude as `z` and the sign of `y*z`.

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README 

        



  

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# cflipsignf



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



> Return a single-precision complex floating-point number with the same magnitude as `z` and the sign of `y*z`.



## Installation



```bash

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

```



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

```



#### cflipsignf( z, y )



Returns a single-precision complex floating-point number with the same magnitude as `z` and the sign of `y*z`.



```javascript

var Complex64 = require( '@stdlib/complex-float32-ctor' );

var real = require( '@stdlib/complex-float32-real' );

var imag = require( '@stdlib/complex-float32-imag' );



var v = cflipsignf( new Complex64( -4.0, 5.0 ), -1.0 );

// returns 



var re = real( v );

// returns 4.0



var im = imag( v );

// returns -5.0

```



## Examples



```javascript

var uniform = require( '@stdlib/random-base-uniform' ).factory;

var Complex64 = require( '@stdlib/complex-float32-ctor' );

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



var rand = uniform( -50.0, 50.0 );



var z;

var y;

var i;

for ( i = 0; i < 100; i++ ) {

    z = new Complex64( rand(), rand() );

    y = rand();

    console.log( 'cflipsignf(%s, %d) = %s', z, y, cflipsignf( z, y ) );

}

```



* * *



## C APIs



### Usage



```c

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

```



#### stdlib_base_cflipsignf( z, y )



Returns a single-precision complex floating-point number with the same magnitude as `z` and the sign of `y*z`.



```c

#include 



float complex y = stdlib_base_cflipsignf( 2.0-1.0*I, -1.0 );

// returns -2.0+1.0*I

```



The function accepts the following arguments:



-   **z**: `[in] float complex` input value.

-   **y**: `[in] float` number from which to derive the sign.



```c

float complex stdlib_base_cflipsignf( const float complex z, const float y );

```



### Examples



```c

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

#include 

#include 



int main( void ) {

    const float complex x[] = { 3.14f+1.5f*I, -3.14f-1.5f*I, 0.0f+0.0f*I, 0.0f/0.0f+0.0f/0.0f*I };



    float complex v;

    float complex y;

    int i;

    for ( i = 0; i < 4; i++ ) {

        v = x[ i ];

        y = stdlib_base_cflipsignf( v, -1.0f );

        printf( "cflipsignf(%f + %fi, %f) = %f + %fi\n", crealf( v ), cimagf( v ), -1.0f, crealf( y ), cimagf( y ) );

    }

}

```



* * *



## See Also



-   [`@stdlib/math-base/ops/cnegf`][@stdlib/math/base/ops/cnegf]: negate a single-precision complex floating-point number.

-   [`@stdlib/math-base/special/cflipsign`][@stdlib/math/base/special/cflipsign]: return a double-precision complex floating-point number with the same magnitude as `z` and the sign of `y*z`.



* * *



## 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-cflipsignf.svg

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



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

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



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

[coverage-url]: https://codecov.io/github/stdlib-js/math-base-special-cflipsignf?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-cflipsignf/tree/deno

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

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

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

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

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

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



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



[@stdlib/math/base/ops/cnegf]: https://github.com/stdlib-js/math-base-ops-cnegf



[@stdlib/math/base/special/cflipsign]: https://github.com/stdlib-js/math-base-special-cflipsign