https://github.com/stdlib-js/math-base-special-fmod
Modulus function.
https://github.com/stdlib-js/math-base-special-fmod
fmod function javascript math mathematics modulus node node-js nodejs stdlib
Last synced: 5 months ago
JSON representation
Modulus function.
- Host: GitHub
- URL: https://github.com/stdlib-js/math-base-special-fmod
- Owner: stdlib-js
- License: apache-2.0
- Created: 2024-07-14T02:29:37.000Z (over 1 year ago)
- Default Branch: main
- Last Pushed: 2025-04-07T07:07:43.000Z (10 months ago)
- Last Synced: 2025-04-12T17:57:00.349Z (10 months ago)
- Topics: fmod, function, javascript, math, mathematics, modulus, node, node-js, nodejs, stdlib
- Language: C
- Homepage: https://github.com/stdlib-js/stdlib
- Size: 1010 KB
- Stars: 1
- Watchers: 2
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- Changelog: CHANGELOG.md
- Contributing: CONTRIBUTING.md
- License: LICENSE
- Code of conduct: CODE_OF_CONDUCT.md
- Citation: CITATION.cff
- Security: SECURITY.md
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README
About stdlib...
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# Modulus Function
[![NPM version][npm-image]][npm-url] [![Build Status][test-image]][test-url] [![Coverage Status][coverage-image]][coverage-url]
> [Modulus function][modulus-function].
The [modulus function][modulus-function] is defined as
```math
z = x%y
```
where `x` is the **dividend** and `y` is the **divisor**.
## Installation
```bash
npm install @stdlib/math-base-special-fmod
```
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 fmod = require( '@stdlib/math-base-special-fmod' );
```
#### fmod( x, y )
Evaluates the [modulus function][modulus-function].
```javascript
var v = fmod( 8.0, 3.0 );
// returns 2.0
v = fmod( 9.0, 3.0 );
// returns 0.0
v = fmod( 8.9, 3.0 );
// returns 2.9
v = fmod( NaN, 3.0 );
// returns NaN
v = fmod( 5.0, NaN );
// returns NaN
v = fmod( NaN, NaN );
// returns NaN
```
## Examples
```javascript
var discreteUniform = require( '@stdlib/random-array-discrete-uniform' );
var logEachMap = require( '@stdlib/console-log-each-map' );
var fmod = require( '@stdlib/math-base-special-fmod' );
var opts = {
'dtype': 'float64'
};
var x = discreteUniform( 100, 0, 10, opts );
var y = discreteUniform( 100, -5, 5, opts );
logEachMap( '%d%%%d = %d', x, y, fmod );
```
* * *
## C APIs
### Usage
```c
#include "stdlib/math/base/special/fmod.h"
```
#### stdlib_base_fmod( x, y )
Evaluates the modulus function.
```c
double out = stdlib_base_fmod( 8.9, 3.0 );
// returns 2.9
out = stdlib_base_fmod( 4.0, 2.0 );
// returns 0.0
```
The function accepts the following arguments:
- **x**: `[in] double` dividend.
- **y**: `[in] double` divisor.
```c
double stdlib_base_fmod( const double x, const double y );
```
### Examples
```c
#include "stdlib/math/base/special/fmod.h"
#include
#include
int main( void ) {
double out;
double x;
double y;
int i;
for ( i = 0; i < 100; i++ ) {
x = ( ( (double)rand() / (double)RAND_MAX ) * 10.0 );
y = ( ( (double)rand() / (double)RAND_MAX ) * 10.0 ) - 5.0;
out = stdlib_base_fmod( x, y );
printf( "fmod(%lf, %lf) = %lf\n", x, y, out );
}
}
```
* * *
## 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]
---
## Copyright
Copyright © 2016-2025. The Stdlib [Authors][stdlib-authors].
[npm-image]: http://img.shields.io/npm/v/@stdlib/math-base-special-fmod.svg
[npm-url]: https://npmjs.org/package/@stdlib/math-base-special-fmod
[test-image]: https://github.com/stdlib-js/math-base-special-fmod/actions/workflows/test.yml/badge.svg?branch=main
[test-url]: https://github.com/stdlib-js/math-base-special-fmod/actions/workflows/test.yml?query=branch:main
[coverage-image]: https://img.shields.io/codecov/c/github/stdlib-js/math-base-special-fmod/main.svg
[coverage-url]: https://codecov.io/github/stdlib-js/math-base-special-fmod?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-fmod/tree/deno
[deno-readme]: https://github.com/stdlib-js/math-base-special-fmod/blob/deno/README.md
[umd-url]: https://github.com/stdlib-js/math-base-special-fmod/tree/umd
[umd-readme]: https://github.com/stdlib-js/math-base-special-fmod/blob/umd/README.md
[esm-url]: https://github.com/stdlib-js/math-base-special-fmod/tree/esm
[esm-readme]: https://github.com/stdlib-js/math-base-special-fmod/blob/esm/README.md
[branches-url]: https://github.com/stdlib-js/math-base-special-fmod/blob/main/branches.md
[modulus-function]: https://en.wikipedia.org/wiki/Remainder