function isEvenf( x ) {
	return isIntegerf( float64ToFloat32( float64ToFloat32( x ) / 2.0 ) );
}
Tests if a finite single-precision floating-point number is an even number.

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

@example
var bool = isEvenf( 5.0 );
// returns false

@example
var bool = isEvenf( -2.0 );
// returns true

@example
var bool = isEvenf( 0.0 );
// returns true

@example
var bool = isEvenf( NaN );
// returns false