QtBigInt - Arbitrary-sized integer class for C++

Arbitrary-sized integer class for C++ with build system support for Qt (qmake) and CMake. Powered by minigmp 6.1.2 for high performance, with no additional dependencies other than the standard library.

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API Reference

Complete reference of the BigInt class, generated automatically with Doxygen.

Open API Reference →

Features

No additional dependencies other than the standard library
Support for all arithmetic operators
Based on the minigmp 6.1.2 library for high performance
Build system support: qmake and CMake

Repository

QuasarApp/QtBigInt
Build instructions
Issues & Discussions

Quick example

#include <bigint.h>

BigInt big1 = 1234567890, big2;
big2 = "9876543210123456789098765432101234567890";

std::cout << (big1 * big2 * 123456).getString() << "\n";
// Output: 1505331490682966620443288524512589666204282352096057600