Method SetSign

extern/ttmath/ttmathint.h:140–146

! this method sets the sign e.g. 1 -> -1 -2 -> -2 from a positive value we make a negative value, if the value is negative we do nothing */

		if the value is negative we do nothing
	*/
	void SetSign()
	{
		if( IsSign() )
			return;

		ChangeSign();
	}