@stdlib/math-base-special-ceil2 NPM

ceil2

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

Round a numeric value to the nearest power of two toward positive infinity.

Installation

npm install @stdlib/math-base-special-ceil2

Usage

var ceil2 = require( '@stdlib/math-base-special-ceil2' );

ceil2( x )

Rounds a numeric value to the nearest power of two toward positive infinity.

var v = ceil2( -4.2 );
// returns -4.0

v = ceil2( -4.5 );
// returns -4.0

v = ceil2( -4.6 );
// returns -4.0

v = ceil2( 9.99999 );
// returns 16.0

v = ceil2( 9.5 );
// returns 16.0

v = ceil2( 13.0 );
// returns 16.0

v = ceil2( -13.0 );
// returns -8.0

v = ceil2( 0.0 );
// returns 0.0

v = ceil2( -0.0 );
// returns -0.0

v = ceil2( Infinity );
// returns Infinity

v = ceil2( -Infinity );
// returns -Infinity

v = ceil2( NaN );
// returns NaN

Examples

var randu = require( '@stdlib/random-base-randu' );
var ceil2 = require( '@stdlib/math-base-special-ceil2' );

var x;
var v;
var i;

for ( i = 0; i < 100; i++ ) {
    x = (randu()*100.0) - 50.0;
    v = ceil2( x );
    console.log( 'Value: %d. Rounded: %d.', x, v );
}

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.