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Last update Sun Apr 19 16:54:07 2009

# bigint

Provides a BigInt struct for multiprecision integer arithmetic.

The internal representation is binary, not decimal.

All relevant operators are overloaded.

Example:

            BigInt a = "9588669891916142";
            BigInt b = "7452469135154800";
            auto c = a * b;
            assert(c == "71459266416693160362545788781600");
            auto d = b * a;
            assert(d == "71459266416693160362545788781600");
            assert(d == c);
            d = c * "794628672112";
            assert(d == "56783581982794522489042432639320434378739200");
            auto e = c + d;
            assert(e == "56783581982865981755459125799682980167520800");
            auto f = d + c;
            assert(f == e);
            auto g = f - c;
            assert(g == d);
            g = f - d;
            assert(g == c);
            e = 12345678;
            g = c + e;
            auto h = g / b;
            auto i = g % b;
            assert(h == a);
            assert(i == e);

Authors:
Janice Caron

Date:
2008.05.18

License:
Public Domain

alias Digit;
  alias for uint

struct BigInt;
  Struct representing a multiprecision integer

  void opAssign(const BigInt n);

  void opAssign(int n);

  void opAssign(uint n);

  void opAssign(long n);

  void opAssign(ulong n);

  void opAssign(string s);

  BigInt opCall(T)(T n);

  const void castTo(out BigInt r);

  const void castTo(out int r);

  const void castTo(out uint r);

  const void castTo(out long r);

  const void castTo(out ulong r);

  const void castTo(out string r);

  const BigInt opPos();

  const BigInt opNeg();

  const BigInt opCom();

  BigInt opPostInc();

  BigInt opPostDec();

  BigInt opAdd(T)(T n);

  BigInt opAdd(T : int)(T n);

  BigInt opAdd(T : const(BigInt))(T n);

  void opAddAssign(T)(T n);

  BigInt opSub(T)(T n);

  BigInt opSub(T : int)(T n);

  BigInt opSub(T : const(BigInt))(T n);

  void opSubAssign(T)(T n);

  BigInt opMul(T)(T n);

  BigInt opMul(T : int)(T n);

  BigInt opMul(T : const(BigInt))(T n);

  void opMulAssign(T)(T n);

  BigInt opDiv(T)(T n);

  BigInt opDiv(T : int)(T n);

  BigInt opDiv(T : const(BigInt))(T n);

  void opDivAssign(T)(T n);

  BigInt opMod(T)(T n);

  int opMod(T : int)(T n);

  BigInt opMod(T : const(BigInt))(T n);

  void opModAssign(T : int)(T n);

  void opModAssign(T)(T n);

  BigInt opAnd(T)(T n);

  BigInt opAnd(T : int)(T n);

  uint opAnd(T : uint)(T n);

  BigInt opAnd(T : const(BigInt))(T n);

  void opAndAssign(T : uint)(T n);

  void opAndAssign(T)(T n);

  BigInt opOr(T)(T n);

  BigInt opOr(T : int)(T n);

  BigInt opOr(T : const(BigInt))(T n);

  void opOrAssign(T)(T n);

  BigInt opXor(T)(T n);

  BigInt opXor(T : int)(T n);

  BigInt opXor(T : const(BigInt))(T n);

  void opXorAssign(T)(T n);

  const BigInt opShl(uint n);

  void opShlAssign(uint n);

  const BigInt opShr(uint n);

  void opShrAssign(uint n);

  BigInt opUShr(T)(T n);

  void opUShrAssign(T)(T n);

  int opEquals(T)(T n);

  int opEquals(T : int)(T n);

  int opEquals(T : const(BigInt))(T n);

  int opCmp(T)(T n);

  int opCmp(T : int)(T n);

  int opCmp(T : const(BigInt))(T n);

  const string toString();

  const hash_t toHash();

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