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.