Package Exports
- @stdlib/math-base-special-absf
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Readme
Absolute Value
Compute the absolute value of a single-precision floating-point number.
The absolute value is defined as
Installation
npm install @stdlib/math-base-special-absfUsage
var absf = require( '@stdlib/math-base-special-absf' );absf( x )
Computes the absolute value of a single-precision floating-point number.
var v = absf( -1.0 );
// returns 1.0
v = absf( 2.0 );
// returns 2.0
v = absf( 0.0 );
// returns 0.0
v = absf( -0.0 );
// returns 0.0
v = absf( NaN );
// returns NaNExamples
var randu = require( '@stdlib/random-base-randu' );
var round = require( '@stdlib/math-base-special-round' );
var absf = require( '@stdlib/math-base-special-absf' );
var rand;
var i;
for ( i = 0; i < 100; i++ ) {
rand = round( randu() * 100.0 ) - 50.0;
console.log( 'absf(%d) = %d', rand, absf( rand ) );
}C APIs
Installation
npm install @stdlib/math-base-special-absfUsage
#include "stdlib/math/base/special/absf.h"stdlib_base_absf( x )
Computes the squared absolute value of a single-precision floating-point number.
float y = stdlib_base_absf( -5.0f );
// returns 5.0fThe function accepts the following arguments:
- x:
[in] floatinput value.
float stdlib_base_absf( const float x );Examples
#include "stdlib/math/base/special/absf.h"
#include <stdio.h>
int main() {
float x[] = { 3.14f, -3.14f, 0.0f, 0.0f/0.0f };
float y;
int i;
for ( i = 0; i < 4; i++ ) {
y = stdlib_base_absf( x[ i ] );
printf( "|%f| = %f\n", x[ i ], y );
}
}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.
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License
See LICENSE.
Copyright
Copyright © 2016-2021. The Stdlib Authors.