mirror of
https://github.com/QuasarApp/QtBigInt.git
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84 lines
2.4 KiB
Markdown
84 lines
2.4 KiB
Markdown
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# 
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**QtBigInt** - Arbitrary-sized integer class for C++ and build system qmake and cmake. Power by minigmp.
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# Features
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* No additional dependencies other than the standard library.
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* Support for all arithmetic operators, which allows you to easily integrate the library into any of your algorithms.
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* Based on the minigmp 6.1.2 library that provides high performance.
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# Build
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* git clone https://github.com/QuasarApp/QtBigInt.git
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* cd QtBigInt
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* qmake -r
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* make -j8
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* make test #(for testing)
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# Include
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## For qmake projects
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* cd yourRepo
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* git submodule add https://github.com/QuasarApp/QtBigInt.git # add the repository of QtBigInt into your repo like submodule
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* git submodule update --init --recursive
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* Include in your pro file the pri file of QtBigInt library
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>>include($$PWD/QtBigInt/GMP.pri)
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* Rebuild your project
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## For cmake projects
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#### The cmake build do not required Qt libraries.
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* cd yourRepo
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* git submodule add https://github.com/QuasarApp/QtBigInt.git # add the repository of QtBigInt into your repo like submodule
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* git submodule update --init --recursive
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* Disable Building of tests (because tests require Qt libraries). Add before incuding of QtBigInt next line :
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>> set(WITHOUT_TESTS 1)
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* Include in your CMakeLists.txt file the main CMakeLists.txt file of QtBigInt library
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>> add_subdirectory(QtBigInt)
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* Rebuild your project
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``` cmake
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set(WITHOUT_TESTS 1)
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add_subdirectory(QtBigInt)
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target_link_libraries(MyBinary PUBLIC QtBigInt)
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```
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### Note
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By Default QtBigInt makes as a static library. If you want to create a shared library just add the BUILD_SHARED_LIBS into your main CMakeLists.txt file.
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Example :
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``` cmake
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set(BUILD_SHARED_LIBS ON)
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set(WITHOUT_TESTS 1)
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add_subdirectory(QtBigInt)
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target_link_libraries(MyBinary PUBLIC QtBigInt)
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```
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## For other build system
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* cd yourRepo
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* git submodule add https://github.com/QuasarApp/QtBigInt.git # add the repository of QtBigInt into your repo like submodule
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* git submodule update --init --recursive
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* Add the rule for build QtBigInt
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* Add INCLUDEPATH and LIBS for your build system
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* Rebuild your project
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# Usage
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Create objects of the BigInt class, and do what you got to do!
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``` cpp
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#include <bigint.h>
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BigInt big1 = 1234567890, big2;
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big2 = "9876543210123456789098765432101234567890";
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std::cout << (big1 * big2 * 123456).getString() << "\n";
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// Output: 1505331490682966620443288524512589666204282352096057600
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```
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