@stdlib/math-base-special-pow
v0.3.1TypeScript
Exponential function.
0/weekUpdated todayApache-2.0Unpacked: 140.6 KB
Published by The Stdlib Authors
npm install @stdlib/math-base-special-powWe 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...
Exponential Function
[![NPM version][npm-image]][npm-url] [![Build Status][test-image]][test-url] [![Coverage Status][coverage-image]][coverage-url]
> [Exponential function][exponential-function].
The [exponential function][exponential-function] is defined as
where b is the base and x is the exponent.
Installation
``bash`
npm install @stdlib/math-base-special-pow
Usage
`javascript`
var pow = require( '@stdlib/math-base-special-pow' );
#### pow( base, exponent )
Evaluates the [exponential function][exponential-function].
`javascript
var v = pow( 2.0, 3.0 );
// returns 8.0
v = pow( 4.0, 0.5 );
// returns 2.0
v = pow( 100.0, 0.0 );
// returns 1.0
v = pow( 3.141592653589793, 5.0 );
// returns ~306.0197
v = pow( 3.141592653589793, -0.2 );
// returns ~0.7954
v = pow( NaN, 3.0 );
// returns NaN
v = pow( 5.0, NaN );
// returns NaN
v = pow( NaN, NaN );
// returns NaN
`
Examples
`javascript
var discreteUniform = require( '@stdlib/random-array-discrete-uniform' );
var logEachMap = require( '@stdlib/console-log-each-map' );
var pow = require( '@stdlib/math-base-special-pow' );
var opts = {
'dtype': 'float64'
};
var b = discreteUniform( 100, 0, 10, opts );
var x = discreteUniform( 100, -5, 5, opts );
logEachMap( '%d^%d = %0.4f', b, x, pow );
`
*
C APIs
$3
`c`
#include "stdlib/math/base/special/pow.h"
#### stdlib_base_pow( base, exponent )
Evaluates the exponential function.
`c
double out = stdlib_base_pow( 3.141592653589793, 5.0 );
// returns ~306.0197
out = stdlib_base_pow( 4.0, 0.5 );
// returns 2.0
`
The function accepts the following arguments:
- base: [in] double base.[in] double
- exponent: exponent.
`c`
double stdlib_base_pow( const double base, const double exponent );
$3
`c
#include "stdlib/math/base/special/pow.h"
#include
#include
int main( void ) {
double out;
double b;
double x;
int i;
for ( i = 0; i < 100; i++ ) {
b = ( ( (double)rand() / (double)RAND_MAX ) * 10.0 );
x = ( ( (double)rand() / (double)RAND_MAX ) * 10.0 ) - 5.0;
out = stdlib_base_pow( b, x );
printf( "pow(%lf, %lf) = %lf\n", b, x, out );
}
}
`
*
See Also
- [@stdlib/math-base/special/exp][@stdlib/math/base/special/exp]: natural exponential function.
- [@stdlib/math-base/special/powm1][@stdlib/math/base/special/powm1]: evaluate bˣ - 1.
*
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 © 2016-2026. The Stdlib [Authors][stdlib-authors].
[npm-image]: http://img.shields.io/npm/v/@stdlib/math-base-special-pow.svg
[npm-url]: https://npmjs.org/package/@stdlib/math-base-special-pow
[test-image]: https://github.com/stdlib-js/math-base-special-pow/actions/workflows/test.yml/badge.svg?branch=v0.3.1
[test-url]: https://github.com/stdlib-js/math-base-special-pow/actions/workflows/test.yml?query=branch:v0.3.1
[coverage-image]: https://img.shields.io/codecov/c/github/stdlib-js/math-base-special-pow/main.svg
[coverage-url]: https://codecov.io/github/stdlib-js/math-base-special-pow?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/math-base-special-pow/tree/deno
[deno-readme]: https://github.com/stdlib-js/math-base-special-pow/blob/deno/README.md
[umd-url]: https://github.com/stdlib-js/math-base-special-pow/tree/umd
[umd-readme]: https://github.com/stdlib-js/math-base-special-pow/blob/umd/README.md
[esm-url]: https://github.com/stdlib-js/math-base-special-pow/tree/esm
[esm-readme]: https://github.com/stdlib-js/math-base-special-pow/blob/esm/README.md
[branches-url]: https://github.com/stdlib-js/math-base-special-pow/blob/main/branches.md
[exponential-function]: https://en.wikipedia.org/wiki/Exponential_function
[@stdlib/math/base/special/exp]: https://www.npmjs.com/package/@stdlib/math-base-special-exp
[@stdlib/math/base/special/powm1]: https://www.npmjs.com/package/@stdlib/math-base-special-powm1