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)

public BigInteger(
	long value


Type: System.Int64

A 64-bit signed integer.

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.

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.

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;
   Console.WriteLine("{0} = {1}: {2}", constructed, assigned, 
// 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      

Universal Windows Platform
Available since 8
.NET Framework
Available since 4.0
Portable Class Library
Supported in: portable .NET platforms
Available since 4.0
Windows Phone
Available since 8.1
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