C++ implementation of the preliminary IEEE P1788 standard for interval arithmetic
C++ CMake
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README

libieeep1788
============

libieeep1788 is a C++ implementation of the preliminary IEEE P1788 standard for
interval arithmetic.

Its main focus is the correctness and not the performance of the implementation.

For details about the implementation see:

    Marco Nehmeier
    libieeep1788: A C++ Implementation of the IEEE interval standard P1788.
    In Norbert Wiener in the 21st Century (21CW),
    2014 IEEE Conference on, June 2014, pages 1-6.
    DOI: 10.1109/NORBERT.2014.6893854



Be aware that libieeep1788 is work in progress and it is assumed that it is not
bug free ...

In case of bugs please use the GitHub issue tracker

    https://github.com/nehmeier/libieeep1788/issues

to report bugs.



Requirements
===================

At the moment the library is runnable/tested on Linux systems with the following
requirements:

    GCC C++  >= 4.9.2 (C++11 support)
    CMake    >= 2.8
    Boost    >= 1.5.4 (unit_test_framework)
    MPFR     >= 3.1.2
    GMP      >= 6.0.0


Installation
============

libieeep1788 is a header only C++ library but it uses the cross-platform build
system CMake for examples, unit testing and installation.


1)  You have to download the sources from 

        https://github.com/nehmeier/libieeep1788

    by using the provided ZIP file or by cloning the git repository.


2)  It is recommended to use a separate build directory. Assuming that you are
    in the root directory of the downloaded source files then perform the 
    following steps:

        mkdir build
        cd build


3)  Now basically you have to perform

        cmake ..

    to create the preferred UNIX make files. In this case CMake tries to find 
    the required compiler and libraries by it own.

    But sometimes it could be necessary export the path to the C++ compiler

        export CXX=path_to_cpp_compiler

    and/or to the required libraries

        export CMAKE_PREFIX_PATH=path_to_lib1:path_to_lib2 

    before the call of

        cmake ..

    to fulfill the requirements.


4)  Now it is time to build the unit tests and the examples

        make

    and perform the unit tests

        make test


5)  After a successful test of the library on your computer you can install the 
    header by

        make install

    which will install the library to the directory specified by the property 
    DCMAKE_INSTALL_PREFIX which defaults to /usr/local on UNIX systems.

    If you want to install the library onto an other location you can specify 
    DCMAKE_INSTALL_PREFIX during step 3) by performing

        cmake .. -DCMAKE_INSTALL_PREFIX=path_to_install_dir

    instead of

        cmake ..



Using libieeep1788
==================

There are some examples in folder examples/ demonstrating the usage of the 
library. 

If you want to compile your own program against libieeep1788 it is necessary 
that you have C++11 support turned on and you link against mpfr and gmp:

    g++ --std=c++11 prog.cpp -lmpfr -lgmp

And of course if libieeep1788, mpfr or gmp are not on the default search path 
you have to specify it by using option -I.