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Usage

This project is header-only, so simply include BigNum.hpp header in your project and then you can use this library like the following:

#include <stdexcept>
#include <iostream>

#include "BigNum.hpp"

using namespace bignum;

int main(){
	bigint_t x = 114514_bigint;
	bigint_t y = x << 334;
	std::cout << std::hex << y << std::endl;
	
	return 0;
}

You can check our wiki for more usages.

Platform Support

  • Clang 3.7 under x86/x86_64 linux
  • Gcc 5.3 under x86/x86_64 linux
  • Clang with Microsoft CodeGen under x86/x86_64 Windows

In general any platform that provides 8-bit and 32-bit integers might work. Any compiler that supports C++14 will compile this library. Compilers that support part of C++14 features might also compile, except for MSVC compilers including vc140, which has wierd issues compling some SFINAE method templates.

TODO

  • a full manual and a full document
  • clean up unused code
  • clean up interface
  • more test
  • more platform support and portability
  • make BigInt work on any data length (a.k.a make BigInt's length great again)
  • a better simulation for basic_ostream::operator>> so that the BigInt behaves as if a native integer.
  • pow, log, exp, ...
  • minus radix support for radix conversion
  • big float
  • optimization
  • expression template pattern to avoid some unnecessary bignum calucations
  • and many more needed work to do ...

LICENSE

You can use this library under any of the following licenses:

  • MIT license
  • BSD 3-clause license
  • LGPL v3 license or
  • GPL v2 license.