@stdlib/math-base-special-absf v0.2.1
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-absf
Usage
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 NaN
Examples
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
Usage
#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 5.0f
The function accepts the following arguments:
- x:
[in] float
input value.
float stdlib_base_absf( const float x );
Examples
#include "stdlib/math/base/special/absf.h"
#include <stdio.h>
int main( void ) {
const 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 );
}
}
See Also
@stdlib/math-base/special/abs
: compute the absolute value of a double-precision floating-point number.@stdlib/math-base/special/abs2f
: compute the squared absolute value of a single-precision floating-point number.@stdlib/math-base/special/labs
: compute an absolute value of a signed 32-bit integer.
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.
Community
License
See LICENSE.
Copyright
Copyright © 2016-2024. The Stdlib Authors.