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Math.BigMul Method

Produces the full product of two 32-bit numbers.

Namespace: System
Assembly: mscorlib (in mscorlib.dll)

Public Shared Function BigMul ( _
	a As Integer, _
	b As Integer _
) As Long
Dim a As Integer
Dim b As Integer
Dim returnValue As Long

returnValue = Math.BigMul(a, b)
public static long BigMul (
	int a, 
	int b
public static function BigMul (
	a : int, 
	b : int
) : long



The first Int32 to multiply.


The second Int32 to multiply.

Return Value

The Int64 containing the product of the specified numbers.

' This example demonstrates Math.BigMul()
Imports System

Class Sample
   Public Shared Sub Main()
      Dim int1 As Integer = Int32.MaxValue
      Dim int2 As Integer = Int32.MaxValue
      Dim longResult As Long
      longResult = Math.BigMul(int1, int2)
      Console.WriteLine("Calculate the product of two Int32 values:")
      Console.WriteLine("{0} * {1} = {2}", int1, int2, longResult)
   End Sub 'Main
End Class 'Sample
'This example produces the following results:
'Calculate the product of two Int32 values:
'2147483647 * 2147483647 = 4611686014132420609

// This example demonstrates Math.BigMul()
import System.*;

class Sample
    public static void main(String[] args)
        int int1 = Int32.MaxValue;
        int int2 = Int32.MaxValue;
        long longResult;
        longResult = System.Math.BigMul(int1, int2);
        Console.WriteLine("Calculate the product of two Int32 values:");
        Console.WriteLine("{0} * {1} = {2}", System.Convert.ToString(int1), 
            System.Convert.ToString(int2), System.Convert.ToString(longResult));
    } //main
} //Sample

This example produces the following results:
Calculate the product of two Int32 values:
2147483647 * 2147483647 = 4611686014132420609

Windows 98, Windows 2000 SP4, Windows Millennium Edition, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.

.NET Framework

Supported in: 2.0, 1.1