Skip to content

Latest commit

 

History

History
348 lines (208 loc) · 9.32 KB

README.md

File metadata and controls

348 lines (208 loc) · 9.32 KB
Raw
About stdlib...

We 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!

Complex64

NPM version Build Status Coverage Status

64-bit complex number.

Usage

import Complex64 from 'https://cdn.jsdelivr.net/gh/stdlib-js/complex-float32@esm/index.mjs';

Complex64( real, imag )

64-bit complex number constructor, where real and imag are the real and imaginary components, respectively.

var z = new Complex64( 5.0, 3.0 );
// returns <Complex64>

Properties

Complex64.BYTES_PER_ELEMENT

Size (in bytes) of each component.

var nbytes = Complex64.BYTES_PER_ELEMENT;
// returns 4

Complex64.prototype.BYTES_PER_ELEMENT

Size (in bytes) of each component.

var z = new Complex64( 5.0, 3.0 );

var nbytes = z.BYTES_PER_ELEMENT;
// returns 4

Complex64.prototype.byteLength

Length (in bytes) of a complex number.

var z = new Complex64( 5.0, 3.0 );

var nbytes = z.byteLength;
// returns 8

Instance

A Complex64 instance has the following properties...

re

A read-only property returning the real component.

var z = new Complex64( 5.0, 3.0 );

var re = z.re;
// returns 5.0

im

A read-only property returning the imaginary component.

var z = new Complex64( 5.0, -3.0 );

var im = z.im;
// returns -3.0

Methods

Accessor Methods

These methods do not mutate a Complex64 instance and, instead, return a complex number representation.

Complex64.prototype.toString()

Returns a string representation of a Complex64 instance.

var z = new Complex64( 5.0, 3.0 );
var str = z.toString();
// returns '5 + 3i'

z = new Complex64( -5.0, -3.0 );
str = z.toString();
// returns '-5 - 3i'

Complex64.prototype.toJSON()

Returns a JSON representation of a Complex64 instance. JSON.stringify() implicitly calls this method when stringifying a Complex64 instance.

var z = new Complex64( 5.0, -3.0 );

var o = z.toJSON();
/*
  {
    "type": "Complex64",
    "re": 5.0,
    "im": -3.0
  }
*/

To revive a Complex64 number from a JSON string, see @stdlib/complex/float32/reviver.

Notes

  • Both the real and imaginary components are stored as single-precision floating-point numbers.

Examples

<!DOCTYPE html>
<html lang="en">
<body>
<script type="module">

import Complex64 from 'https://cdn.jsdelivr.net/gh/stdlib-js/complex-float32@esm/index.mjs';

var z = new Complex64( 3.0, -2.0 );

console.log( 'type: %s', typeof z );
// => 'type: object'

console.log( 'str: %s', z );
// => 'str: 3 - 2i'

console.log( 'real: %d', z.re );
// => 'real: 3'

console.log( 'imaginary: %d', z.im );
// => 'imaginary: -2'

console.log( 'JSON: %s', JSON.stringify( z ) );
// => 'JSON: {"type":"Complex64","re":3,"im":-2}'

</script>
</body>
</html>

See Also

Notice

This package is part of stdlib, a standard library 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.

Community

Chat

License

See LICENSE.

Copyright

Copyright © 2016-2024. The Stdlib Authors.