@stdlib/math-base-special-fast-abs NPM

Absolute Value

$NPM version$ $Build Status$ $Coverage Status$

Compute an absolute value.

Installation

npm install @stdlib/math-base-special-fast-abs

Usage

var abs = require( '@stdlib/math-base-special-fast-abs' );

abs( x )

Computes an absolute value.

var v = abs( -1.0 );
// returns 1.0

v = abs( 2.0 );
// returns 2.0

v = abs( 0.0 );
// returns 0.0

v = abs( NaN );
// returns NaN

Notes

This implementation is not IEEE 754 compliant. If provided -0, the function returns -0.
```
var v = abs( -0.0 );
// returns -0.0
```

Examples

var randu = require( '@stdlib/random-base-randu' );
var round = require( '@stdlib/math-base-special-round' );
var abs = require( '@stdlib/math-base-special-fast-abs' );

var rand;
var i;

for ( i = 0; i < 100; i++ ) {
    rand = round( randu() * 100.0 ) - 50.0;
    console.log( 'abs(%d) = %d', rand, abs( rand ) );
}

Notice

This package is part of 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, see the main project repository.