# isNonNegativeInteger > Test if a value is a number having a nonnegative integer value.
## Usage ```javascript var isNonNegativeInteger = require( '@stdlib/assert/is-nonnegative-integer' ); ``` #### isNonNegativeInteger( value ) Tests if a `value` is a `number` having a nonnegative `integer` value. ```javascript var Number = require( '@stdlib/number/ctor' ); var bool = isNonNegativeInteger( 5.0 ); // returns true bool = isNonNegativeInteger( new Number( 5.0 ) ); // returns true bool = isNonNegativeInteger( -5.0 ); // returns false bool = isNonNegativeInteger( 3.14 ); // returns false bool = isNonNegativeInteger( null ); // returns false ``` #### isNonNegativeInteger.isPrimitive( value ) Tests if a `value` is a primitive `number` having a nonnegative `integer` value. ```javascript var Number = require( '@stdlib/number/ctor' ); var bool = isNonNegativeInteger.isPrimitive( 3.0 ); // returns true bool = isNonNegativeInteger.isPrimitive( new Number( 3.0 ) ); // returns false ``` #### isNonNegativeInteger.isObject( value ) Tests if a `value` is a `Number` object having a nonnegative `integer` value. ```javascript var Number = require( '@stdlib/number/ctor' ); var bool = isNonNegativeInteger.isObject( 3.0 ); // returns false bool = isNonNegativeInteger.isObject( new Number( 3.0 ) ); // returns true ```
## Examples ```javascript var Number = require( '@stdlib/number/ctor' ); var isNonNegativeInteger = require( '@stdlib/assert/is-nonnegative-integer' ); var bool = isNonNegativeInteger( 5.0 ); // returns true bool = isNonNegativeInteger( new Number( 5.0 ) ); // returns true bool = isNonNegativeInteger( 0.0 ); // returns true bool = isNonNegativeInteger( 3.14 ); // returns false bool = isNonNegativeInteger( -5.0 ); // returns false bool = isNonNegativeInteger( '5' ); // returns false bool = isNonNegativeInteger( null ); // returns false ```