# isOdd > Test if a value is an odd number.
## Usage ```javascript var isOdd = require( '@stdlib/assert/is-odd' ); ``` #### isOdd( value ) Tests if a `value` is an odd `number`. ```javascript var Number = require( '@stdlib/number/ctor' ); var bool = isOdd( 5.0 ); // returns true bool = isOdd( new Number( 5.0 ) ); // returns true bool = isOdd( 6.0 ); // returns false bool = isOdd( -3.14 ); // returns false bool = isOdd( null ); // returns false bool = isOdd( NaN ); // returns false ``` #### isOdd.isPrimitive( value ) Tests if a `value` is an odd primitive number. ```javascript var Number = require( '@stdlib/number/ctor' ); var bool = isOdd.isPrimitive( -5.0 ); // returns true bool = isOdd.isPrimitive( new Number( -5.0 ) ); // returns false ``` #### isOdd.isObject( value ) Tests if a `value` is a `Number` object having an odd number value. ```javascript var Number = require( '@stdlib/number/ctor' ); var bool = isOdd.isObject( 5.0 ); // returns false bool = isOdd.isObject( new Number( 5.0 ) ); // returns true ```
## Examples ```javascript var Number = require( '@stdlib/number/ctor' ); var isOdd = require( '@stdlib/assert/is-odd' ); var bool = isOdd( 5.0 ); // returns true bool = isOdd( new Number( 5 ) ); // returns true bool = isOdd( 0.0 ); // returns false bool = isOdd( 4.0 ); // returns false bool = isOdd( NaN ); // returns false bool = isOdd( '5' ); // returns false bool = isOdd( null ); // returns false ```