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a) Updated CMake files to run tests and properly import other boost dependencies b) Improved custom expectation facility and added test for same c) fixed error when checking wasn’t being done on assignment d) fixed error where lower bound was assumed to be 0
66 lines
3.3 KiB
HTML
66 lines
3.3 KiB
HTML
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<title>Performance Tests</title>
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<td valign="top"><img href="index.html" height="164px" src="pre-boost.jpg" alt="Library Documentation Index"></td>
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<td><h2>Safe Numerics</h2></td>
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<div class="section">
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<div class="titlepage"><div><div><h2 class="title" style="clear: both">
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<a name="safe_numerics.performance_tests"></a>Performance Tests</h2></div></div></div>
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<p>Our goal is to create facilities which make it possible to write
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programs known to be correct. But we also want programmers to actually use
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the facilities we provide here. This won't happen if using these
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facilities impacts performance to a significant degree. Although we've
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taken precautions to avoid doing this, the only real way to know is to
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create and run some tests.</p>
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<p>So far we've only run one explicit performance test -
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<code class="filename"><a href="../../test/test_performance.cpp" target="_top">test_performance.cpp</a></code>.
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This runs a test from the Boost Multiprecision library to count prime
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numbers and makes extensive usage of integer arithmetic. We've run the
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tests with <code class="computeroutput">unsigned</code> integers and with
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<code class="computeroutput">safe<unsigned></code> on two different compilers.. No other
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change was made to the program. We list the results without further
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comment.</p>
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<pre class="screen">g++ (GCC) 6.2.0
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Testing type unsigned:
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time = 17.6215
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count = 1857858
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Testing type safe<unsigned>:
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time = 22.4226
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count = 1857858
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clang-802.0.41
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Testing type unsigned:
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time = 16.9174
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count = 1857858
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Testing type safe<unsigned>:
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time = 36.5166
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count = 1857858
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</pre>
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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
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Software License</a></p>
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