A Swift wrapper around the GNU Multiple Precision Arithmetic Library (libgmp), largely compatible with the OpenSSL-based Swift big number library.
This package uses CGMP, which, in turn makes available libgmp for Swift. Therefore, prior to compiling, you need to have a copy of libgmp installed for your operating system.
For apt-based Linux distributions (such as Debian or Ubuntu), you need to install the libgmp-dev package first:
sudo apt install libgmp-dev
Install gmp via Homebrew:
brew install gmp
This library uses the Swift Package Manager. To build and test use:
swift build -Xcc -I/usr/local/include -Xlinker -L/usr/local/lib
swift test -Xcc -I/usr/local/include -Xlinker -L/usr/local/lib
At the moment, only a small number of BigInt operations corresponding to the libgmp mpz type are implemented.