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- <td><h2>Safe Numerics</h2></td>
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- <a name="safe_numerics.notes"></a>Background</h2></div></div></div>
- <p>This library started out as a re-implementation of the facilities
- provided by <a href="http://safeint.codeplex.com" target="_top">David LeBlanc's SafeInt
- Library</a>. I found this library to be well done in every way. My main
- usage was to run unit tests for my embedded systems projects on my PC.
- Still, from my perspective it had a few issues.</p>
- <div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
- <li class="listitem"><p>It was a lot of code in one header - 6400 lines. Very unwieldy to
- understand, modify and maintain.</p></li>
- <li class="listitem"><p>I couldn't find separate documentation other than that in the
- header file.</p></li>
- <li class="listitem"><p>It didn't use <a href="http://www.boost.org" target="_top">Boost</a>
- conventions for naming.</p></li>
- <li class="listitem"><p>It required porting to different compilers.</p></li>
- <li class="listitem"><p>It had a very long license associated with it.</p></li>
- <li class="listitem"><p>I could find no test suite for the library.</p></li>
- </ul></div>
- <p>Using later versions of C++ and the its standard library, template
- metaprogramming and <a href="http://www.boost.org" target="_top">Boost
- libraries</a> I managed to (re)implement similar functionality in under
- 2000 ? lines of code. I promoted this version as a possible submission to
- the Boost. The feedback I received convinced me that no such library would
- be considered acceptable to the large majority of C++ programmers. It seems
- that the desire for maximum performance overrides any requirement that a
- program be known to be free of bugs. By this time I had a better idea of the
- opportunities available with the latest version of C++ (C++14) and resolved
- to address this issue by creating a library which would provide all the
- facilities of safe numerics at minimal runtime cost. The result is what you
- see here. The library now consists of 7000 lines of code, approximately 50
- separate tests and more than 60 pages of documentation and examples.</p>
- <p>Since I wrote the above, I've been contacted by David LeBlanc. He's
- been updating his package and informs me that the latest
- version:</p>
- <div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
- <li class="listitem"><p>SafeInt does not require porting for different compilers, is
- fully supported on gcc, clang, and Visual Studio.</p></li>
- <li class="listitem"><p>The license has been changed from MS-PL to MIT license.</p></li>
- <li class="listitem"><p>The library has had a test suite since before it was public, and
- is now located here:</p></li>
- <li class="listitem"><p>SafeInt also has no external dependencies other than standard
- library files, and doesn't need anything else installed to
- work.</p></li>
- </ul></div>
- <p>His current package can now be found at in <a href="https://github.com/dcleblanc/SafeInt" target="_top">github</a>.</p>
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- <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
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- <td align="right"><div class="copyright-footer">Copyright © 2012-2018 Robert Ramey<p><a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">Subject to Boost
- Software License</a></p>
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