@stdlib/math-base-special-round

Round

Round a numeric value to the nearest integer.

Installation

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

Usage

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

round( x )

Rounds a numeric value to the nearest integer.

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

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

v = round( -4.6 );
// returns -5.0

v = round( 9.99999 );
// returns 10.0

v = round( 9.5 );
// returns 10.0

v = round( 9.2 );
// returns 9.0

v = round( 0.0 );
// returns 0.0

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

v = round( Infinity );
// returns Infinity

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

v = round( NaN );
// returns NaN

Notes

• Ties are rounded toward positive infinity.

Examples

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

var x;
var i;

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

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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

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License

See LICENSE.

Copyright

Copyright © 2016-2021. The Stdlib Authors.