Create a complex number.
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> Create a complex number.
``bash`
npm install @stdlib/complex-cmplx
`javascript`
var complex = require( '@stdlib/complex-cmplx' );
#### complex( real, imag\[, dtype] )
Creates a complex number, where real and imag are the real and imaginary components, respectively.
`javascript`
var z = complex( 5.0, 3.0 );
// returns
By default, the function returns a [128-bit complex number][@stdlib/complex/float64/ctor]. To specify an alternative underlying data type, set the dtype parameter to one of the following:
- ['float64'][@stdlib/complex/float64/ctor]: store real and imaginary components as double-precision floating-point numbers.'float32'
- [][@stdlib/complex/float32/ctor]: store real and imaginary components as single-precision floating-point numbers.
`javascript`
var z = complex( 5.0, 3.0, 'float32' );
// returns
`javascript
var discreteUniform = require( '@stdlib/random-base-discrete-uniform' ).factory;
var complex = require( '@stdlib/complex-cmplx' );
var rand = discreteUniform( -50, 50 );
var z;
var i;
for ( i = 0; i < 100; i++ ) {
z = complex( rand(), rand(), 'float64' );
console.log( z.toString() );
}
`
*
- [@stdlib/complex-float64/ctor][@stdlib/complex/float64/ctor]: 128-bit complex number.
- [@stdlib/complex-float32/ctor][@stdlib/complex/float32/ctor]: 64-bit complex 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].
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---
See [LICENSE][stdlib-license].
Copyright © 2016-2026. The Stdlib [Authors][stdlib-authors].
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[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-cmplx/tree/deno
[deno-readme]: https://github.com/stdlib-js/complex-cmplx/blob/deno/README.md
[umd-url]: https://github.com/stdlib-js/complex-cmplx/tree/umd
[umd-readme]: https://github.com/stdlib-js/complex-cmplx/blob/umd/README.md
[esm-url]: https://github.com/stdlib-js/complex-cmplx/tree/esm
[esm-readme]: https://github.com/stdlib-js/complex-cmplx/blob/esm/README.md
[branches-url]: https://github.com/stdlib-js/complex-cmplx/blob/main/branches.md
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[@stdlib/complex/float64/ctor]: https://www.npmjs.com/package/@stdlib/complex-float64-ctor
[@stdlib/complex/float32/ctor]: https://www.npmjs.com/package/@stdlib/complex-float32-ctor