Return the imaginary component of a single-precision complex floating-point number.
npm install @stdlib/complex-float32-imagWe believe in a future in which the web is a preferred environment for numerical computation. To help realize this future, we've built stdlib. stdlib is a standard library, with an emphasis on numerical and scientific computation, written in JavaScript (and C) for execution in browsers and in Node.js. The library is fully decomposable, being architected in such a way that you can swap out and mix and match APIs and functionality to cater to your exact preferences and use cases. When you use stdlib, you can be absolutely certain that you are using the most thorough, rigorous, well-written, studied, documented, tested, measured, and high-quality code out there. To join us in bringing numerical computing to the web, get started by checking us out on GitHub, and please consider financially supporting stdlib. We greatly appreciate your continued support!
About stdlib...
[![NPM version][npm-image]][npm-url] [![Build Status][test-image]][test-url] [![Coverage Status][coverage-image]][coverage-url]
> Return the imaginary component of a single-precision complex floating-point number.
``bash`
npm install @stdlib/complex-float32-imag
`javascript`
var imag = require( '@stdlib/complex-float32-imag' );
#### imag( z )
Returns the imaginary component of a single-precision complex floating-point number.
`javascript
var Complex64 = require( '@stdlib/complex-float32-ctor' );
var z = new Complex64( 5.0, 3.0 );
var im = imag( z );
// returns 3.0
`
`javascript
var Complex64 = require( '@stdlib/complex-float32-ctor' );
var discreteUniform = require( '@stdlib/random-base-discrete-uniform' );
var filledarrayBy = require( '@stdlib/array-filled-by' );
var imag = require( '@stdlib/complex-float32-imag' );
function random() {
return new Complex64( discreteUniform( -10, 10 ), discreteUniform( -10, 10 ) );
}
// Generate an array of random complex numbers:
var x = filledarrayBy( 100, 'complex64', random );
// returns
// Retrieve the imaginary component of each complex number...
var z;
var i;
for ( i = 0; i < x.length; i++ ) {
z = x.get( i );
console.log( 'imag(%s) = %d', z.toString(), imag( z ) );
}
`
*
`c`
#include "stdlib/complex/float32/imag.h"
#### stdlib_complex64_imag( z )
Returns the imaginary component of a single-precision complex floating-point number.
`c
#include "stdlib/complex/float32/ctor.h"
stdlib_complex64_t z = stdlib_complex64( 5.0f, 2.0f );
// ...
float im = stdlib_complex64_imag( z );
// returns 2.0f
`
The function accepts the following arguments:
- z: [in] stdlib_complex64_t single-precision complex floating-point number.
`c`
float stdlib_complex64_imag( const stdlib_complex64_t z );
`c
#include "stdlib/complex/float32/imag.h"
#include "stdlib/complex/float32/ctor.h"
#include
int main( void ) {
const stdlib_complex64_t x[] = {
stdlib_complex64( 5.0f, 2.0f ),
stdlib_complex64( -2.0f, 1.0f ),
stdlib_complex64( 0.0f, -0.0f ),
stdlib_complex64( 0.0f/0.0f, 0.0f/0.0f )
};
int i;
for ( i = 0; i < 4; i++ ) {
printf( "imag(v) = %f\n", stdlib_complex64_imag( x[ i ] ) );
}
}
`
*
- [@stdlib/complex-float64/imag][@stdlib/complex/float64/imag]: return the imaginary component of a double-precision complex floating-point number.
- [@stdlib/complex-float32/real][@stdlib/complex/float32/real]: return the real component of a single-precision complex floating-point number.
- [@stdlib/complex-float32/reim][@stdlib/complex/float32/reim]: return the real and imaginary components of a single-precision complex floating-point number.
*
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]
---
See [LICENSE][stdlib-license].
Copyright © 2016-2026. The Stdlib [Authors][stdlib-authors].
[npm-image]: http://img.shields.io/npm/v/@stdlib/complex-float32-imag.svg
[npm-url]: https://npmjs.org/package/@stdlib/complex-float32-imag
[test-image]: https://github.com/stdlib-js/complex-float32-imag/actions/workflows/test.yml/badge.svg?branch=v0.1.2
[test-url]: https://github.com/stdlib-js/complex-float32-imag/actions/workflows/test.yml?query=branch:v0.1.2
[coverage-image]: https://img.shields.io/codecov/c/github/stdlib-js/complex-float32-imag/main.svg
[coverage-url]: https://codecov.io/github/stdlib-js/complex-float32-imag?branch=main
[chat-image]: https://img.shields.io/badge/zulip-join_chat-brightgreen.svg
[chat-url]: https://stdlib.zulipchat.com
[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/complex-float32-imag/tree/deno
[deno-readme]: https://github.com/stdlib-js/complex-float32-imag/blob/deno/README.md
[umd-url]: https://github.com/stdlib-js/complex-float32-imag/tree/umd
[umd-readme]: https://github.com/stdlib-js/complex-float32-imag/blob/umd/README.md
[esm-url]: https://github.com/stdlib-js/complex-float32-imag/tree/esm
[esm-readme]: https://github.com/stdlib-js/complex-float32-imag/blob/esm/README.md
[branches-url]: https://github.com/stdlib-js/complex-float32-imag/blob/main/branches.md
[stdlib-license]: https://raw.githubusercontent.com/stdlib-js/complex-float32-imag/main/LICENSE
[@stdlib/complex/float64/imag]: https://www.npmjs.com/package/@stdlib/complex-float64-imag
[@stdlib/complex/float32/real]: https://www.npmjs.com/package/@stdlib/complex-float32-real
[@stdlib/complex/float32/reim]: https://www.npmjs.com/package/@stdlib/complex-float32-reim