@stdlib/math-base-special-rcbrt NPM

Reciprocal Cube Root

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

Compute the reciprocal of the principal cube root of a double-precision floating-point number.

The reciprocal of the principal cube root is defined as

Installation

npm install @stdlib/math-base-special-rcbrt

Usage

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

rcbrt( x )

Computes the reciprocal (inverse) cube root of a double-precision floating-point number.

var v = rcbrt( 1.0 );
// returns 1.0

v = rcbrt( 8.0 );
// returns 0.5

v = rcbrt( 1000.0 );
// returns 0.1

v = rcbrt( 0.0 );
// returns Infinity

v = rcbrt( NaN );
// returns NaN

v = rcbrt( Infinity );
// returns 0.0

Examples

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

var x;
var i;

for ( i = 0; i < 100; i++ ) {
    x = round( randu() * 100.0 );
    console.log( 'rcbrt(%d) = %d', x, rcbrt( x ) );
}

C APIs

Usage

#include "stdlib/math/base/special/rcbrt.h"

stdlib_base_rcbrt( x )

Computes the reciprocal (inverse) cube root of a double-precision floating-point number.

double y = stdlib_base_rcbrt( 8.0 );
// returns 0.5

The function accepts the following arguments:

x: [in] double input value.

double stdlib_base_rcbrt( const double x );

Examples

#include "stdlib/math/base/special/rcbrt.h"
#include <stdio.h>

int main( void ) {
    const double x[] = { 3.14, 9.0, 0.0, 0.0/0.0 };

    double y;
    int i;
    for ( i = 0; i < 4; i++ ) {
        y = stdlib_base_rcbrt( x[ i ] );
        printf( "rcbrt(%lf) = %lf\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.