MonoTouch.Dialog.Extensions.Fraction.ReduceFraction C# (CSharp) Method

		public static void ReduceFraction(Fraction frac)
		{
			try
			{
				if (frac.Numerator==0)
				{
					frac.Denominator=1;
					return;
				}
				
				long iGCD=GCD(frac.Numerator, frac.Denominator);
				frac.Numerator/=iGCD;
				frac.Denominator/=iGCD;
				
				if ( frac.Denominator<0 )	// if -ve sign in denominator
				{
					//pass -ve sign to numerator
					frac.Numerator*=-1;
					frac.Denominator*=-1;	
				}
			} // end try
			catch(Exception exp)
			{
				throw new FractionException("Cannot reduce Fraction: " + exp.Message);
			}
		}