function isOdd( x ) {
	// Check sign to prevent overflow...
	if ( x > 0.0 ) {
		return isEven( x-1.0 );
	}
	return isEven( x+1.0 );
}
Tests if a finite double-precision floating-point number is an odd number.

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

@example
var bool = isOdd( 5.0 );
// returns true

@example
var bool = isOdd( -2.0 );
// returns false

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

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