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11/18/2011

BigInteger Constructor (Int64)

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Initializes a new instance of the BigInteger structure using a 64-bit signed integer value.

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

Syntax

'Declaration
Public Sub New ( _
    value As Long _
)

public BigInteger(
    long value
)

Parameters

value
Type: System.Int64
A 64-bit signed integer.

Remarks

There is no loss of precision when instantiating a BigInteger object by using this constructor.

The BigInteger value that results from calling this constructor is identical to the value that results from assigning an Int64 value to a BigInteger.

Examples

The following example calls the BigInteger(Int64) constructor to instantiate BigInteger values from an array of 64-bit integers. It also uses implicit conversion to assign each 64-bit integer value to a BigInteger variable. It then compares the two values to establish that the resulting BigInteger values are the same.

Dim longs() As Long = { Int64.MinValue, -10534, -189, 0, 17, 113439,
                              Int64.MaxValue }
Dim constructed, assigned As BigInteger

For Each number As Long In longs
   constructed = New BigInteger(number)
   assigned = number
   outputBlock.Text += String.Format("{0} = {1}: {2}", constructed, assigned,  
                     constructed.Equals(assigned))+ vbCrLf 
Next
' The example displays the following output:
'       -2147483648 = -2147483648: True
'       -10534 = -10534: True
'       -189 = -189: True
'       0 = 0: True
'       17 = 17: True
'       113439 = 113439: True
'       2147483647 = 2147483647: True

long[] longs = { Int64.MinValue, -10534, -189, 0, 17, 113439,
                 Int64.MaxValue };
BigInteger constructed, assigned;

foreach (long number in longs)
{
   constructed = new BigInteger(number);
   assigned = number;
   outputBlock.Text += String.Format("{0} = {1}: {2}", constructed, assigned,
                     constructed.Equals(assigned)) + "\n";
}
// The example displays the following output:
//       -2147483648 = -2147483648: True
//       -10534 = -10534: True
//       -189 = -189: True
//       0 = 0: True
//       17 = 17: True
//       113439 = 113439: True
//       2147483647 = 2147483647: True

Version Information

Silverlight

Supported in: 5, 4

Platforms

For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.

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