@stdlib/math-base-special-cbrt NPM

Cube Root

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

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

Installation

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

Usage

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

cbrt( x )

Computes the cube root of a double-precision floating-point number.

var v = cbrt( 64.0 );
// returns 4.0

v = cbrt( 27.0 );
// returns 3.0

v = cbrt( 0.0 );
// returns 0.0

v = cbrt( -0.0 );
// returns -0.0

v = cbrt( -9.0 );
// returns ~-2.08

v = cbrt( NaN );
// returns NaN

Examples

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

var x;
var i;

for ( i = 0; i < 100; i++ ) {
    x = (randu()*200.0) - 100.0;
    console.log( 'cbrt(%d) = %d', x, cbrt( x ) );
}

C APIs

Usage

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

stdlib_base_cbrt( x )

Computes the cube root of a double-precision floating-point number.

double y = stdlib_base_cbrt( 27.0 );
// returns 3.0

The function accepts the following arguments:

x: [in] double input value.

double stdlib_base_cbrt( const double x );

Examples

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

int main( void ) {
    const double x[] = { 3.14, 9.00, 0.0, 0.0/0.0 };

    double y;
    int i;
    for ( i = 0; i < 4; i++ ) {
        y = stdlib_base_cbrt( x[ i ] );
        printf( "cbrt(%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.