This is our big integer library, meow!!

We've wrapped a layer around the obscure Boost.Multiprecision to provide a Bigint type for representing big integers.
After completing the setup, you only need one line #include "bigint.hpp" to start using our library~

If your system is Debian or Ubuntu (including WSL), you can copy and run the following commands step by step:

sudo apt update

Enter your password to update the download list!

sudo apt install libboost-all-dev

Install the Boost headers — this step is essential!

sudo apt install libgmp3-dev

Optionally install GMP for faster computation!!

If your system is macOS:
We recommend installing Homebrew if you don’t have it yet!

/bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"

Then run:

brew install boost

If you want to speed up calculations, you can also install GMP:

brew install gmp

For other users (e.g., Windows), you can ask AI assistants like Deepseek for help.

Once the environment is ready, you can obtain bigint.hpp in two ways:

1. Click bigint.hpp in the repository, then click the Raw button in the top-right corner, and right-click to save as bigint.hpp.
2. Copy and run:

   git clone https://gitee.com/cero0xA672/BIGINT.git
   cd BIGINT
   

Next, make sure bigint.hpp is in the same directory as your project file.
In your project source file, write #include "bigint.hpp" — and you're ready to use our library!

You can use BigInt just like you would with ordinary unsigned integer types.
For more detailed usage, see README.md.

After that, compile your file with the following command:

g++ -std=c++17 your_project_file.cpp -o your_output_filename && ./your_output_filename

Make sure both instances of your_output_filename are the same.

If GMP is already installed on your system, you'll need to add two extra flags when compiling:

g++ -std=c++17 your_project_file.cpp -o your_output_filename -lgmp -lgmpxx && ./your_output_filename

Encountered an error?
'g++' is not recognized as an internal or external command: You don't have a compiler installed — if you're unsure what to do, ask an AI for help!
fatal error: bigint.hpp: No such file or directory: bigint.hpp is not in the same directory as your project file! Move it to the project directory!
#error "This header requires Boost 1.75 or higher": Please install the latest Boost!