function isInfinite( value ) {
	return (
		isNumber( value ) &&
		isinf( value.valueOf() )
	);
}
Tests if a value is a number object having an infinite value.

@param {*} value - value to test
@returns {boolean} boolean indicating if a value is a number object having an infinite value

@example
var bool = isInfinite( 1.0/0.0 );
// returns false

@example
var bool = isInfinite( new Number( 1.0/0.0 ) );
// returns true