# Math.BigMul(Int32, Int32)Math.BigMul(Int32, Int32)Math.BigMul(Int32, Int32)Math.BigMul(Int32, Int32) Method

## Definition

Produces the full product of two 32-bit numbers.

``````public:
static long BigMul(int a, int b);``````
``````[System.Runtime.TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")]
public static long BigMul (int a, int b);``````
``static member BigMul : int * int -> int64``
``Public Shared Function BigMul (a As Integer, b As Integer) As Long``
Parameters
a
Int32 Int32 Int32 Int32

The first number to multiply.

b
Int32 Int32 Int32 Int32

The second number to multiply.

Returns

The number containing the product of the specified numbers.

## Examples

The following example demonstrates the use of the BigMul method to calculate the product of two integer values.

``````// This example demonstrates Math.BigMul()
using namespace System;
int main()
{
int int1 = Int32::MaxValue;
int int2 = Int32::MaxValue;
Int64 longResult;

//
longResult = Math::BigMul( int1, int2 );
Console::WriteLine( "Calculate the product of two Int32 values:" );
Console::WriteLine( "{0} * {1} = {2}", int1, int2, longResult );
}

/*
This example produces the following results:
Calculate the product of two Int32 values:
2147483647 * 2147483647 = 4611686014132420609
*/
``````
``````// This example demonstrates Math.BigMul()
using System;

class Sample
{
public static void Main()
{
int int1 = Int32.MaxValue;
int int2 = Int32.MaxValue;
long longResult;
//
longResult = Math.BigMul(int1, int2);
Console.WriteLine("Calculate the product of two Int32 values:");
Console.WriteLine("{0} * {1} = {2}", int1, int2, longResult);
}
}
/*
This example produces the following results:
Calculate the product of two Int32 values:
2147483647 * 2147483647 = 4611686014132420609
*/
``````
``````' 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
'
``````