function isEven( x ) {
	return (x & 1) === 0;
}
Tests if a 32-bit integer is even.

@param {integer32} x - value to test
@returns {boolean} boolean indicating whether the value is even

@example
var bool = isEven( 5 );
// returns false

@example
var bool = isEven( -2 );
// returns true

@example
var bool = isEven( 0 );
// returns true