BigInteger Support

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BigInteger is a new type in Microsoft .NET 4.0 that allows arbitrary length signed integer values.

It provides all standard operations for integers and a few extra ones, like Log, ModPow and GreatestCommonDivisor.

Delphi Prism supports virtually unlimited length big integer constants in code. To use this feature, the System.Numerics.dll library has to be referenced. The type itself is defined in the System.Numerics namespace.

var r := 698574357436578436543275894375984326598342759435634977653476574392865784356;
  var y := 8574398256943285643296524390;
  Console.WriteLine(y);
  Console.WriteLine(r);
  y := r - y;
  Console.WriteLine(y);

Additional Operations

Operation	Description
Abs	Returns the absolute value (if it is negative, 0 minus the value is returned, else the original is returned)
DivRem	Divides two big integers and returns both the result and the remainder
Log	Natural and double value based logarithm of a big integer
Log10	Base 10 Logarithm of a specific big integer
ModPow	Does a modulus division (remainder) of a value raised to the power of another value (often used in RSA)
Pow	Raises a number of the power of another number
GreatestCommonDivisor	Returns the GCD of two values (the largest number that both can be divided by without leaving a remainder)

See Also

• Integers

Area: Oxygene Language
Compiler version: Oxygene 5

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