@stdlib/math-base-assert-is-odd

0.2.1 • Public • Published

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isOdd

Test if a finite numeric value is an odd number.

Installation

`npm install @stdlib/math-base-assert-is-odd`

Usage

`var isOdd = require( '@stdlib/math-base-assert-is-odd' );`

isOdd( x )

Tests if a finite `numeric` value is an odd number.

```var bool = isOdd( 5.0 );
// returns true

bool = isOdd( -2.0 );
// returns false

bool = isOdd( 0.0 );
// returns false

bool = isOdd( NaN );
// returns false```

Notes

• The function assumes a finite `number`. If provided positive or negative `infinity`, the function will return `true`, when, in fact, the result is undefined. If `x` can be `infinite`, wrap the implementation as follows:

```function check( x ) {
return (
x < Infinity &&
x > -Infinity &&
isOdd( x )
);
}

var bool = check( Infinity );
// returns false

bool = check( -Infinity );
// returns false```

Examples

```var randu = require( '@stdlib/random-base-randu' );
var round = require( '@stdlib/math-base-special-round' );
var isOdd = require( '@stdlib/math-base-assert-is-odd' );

var bool;
var x;
var i;

for ( i = 0; i < 100; i++ ) {
x = round( randu()*100.0 );
bool = isOdd( x );
console.log( '%d is %s', x, ( bool ) ? 'odd' : 'not odd' );
}```

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.

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Install

`npm i @stdlib/math-base-assert-is-odd`

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