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CSharp · Console

/Program.cs

using System;
					
public class Program
{
	
	public struct ULARGE_INTEGER
	{
		public UInt32 loPart;
		public UInt32 hiPart;
	}

	public static void Main()
	{
		ULARGE_INTEGER a;
		a.hiPart = 0x80123456;
		a.loPart = 0x789ABCDE;
		
		UInt32 m = 585741;
		
		
		//Calculate 0x80123456789ABCDE % 585741
		UInt32 r = Program.Mod64(a, m);
		
		Console.WriteLine("0x{0:x8}{1:x8} mod {2} = {3}",
				a.hiPart, a.loPart, m, r);
	}
	
	public static UInt32 Mod64(ULARGE_INTEGER a, UInt32 m)
	{
		/*
			Calculates
			r = a mod m

				a.hiPart: High 32-bits of UInt32 a
				a.loPart: Low  32-bits of UInt32 a
				 m: modulus
				 
			In other words:
			
				r = Ah||Al mod m
			 
		*/
		
		//TODO: Ask Stackoverflow
		return 7;
		
		
	}
}