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| <div class="titlepage"><div><div><h2 class="title" style="clear: both"> |
| <a name="math_toolkit.getting_best"></a><a class="link" href="getting_best.html" title="Getting the Best Performance from this Library">Getting the Best Performance |
| from this Library</a> |
| </h2></div></div></div> |
| <p> |
| By far the most important thing you can do when using this library is turn |
| on your compiler's optimisation options. As the following table shows the penalty |
| for using the library in debug mode can be quite large. |
| </p> |
| <div class="table"> |
| <a name="math_toolkit.getting_best.performance_comparison_of_releas"></a><p class="title"><b>Table 15.1. Performance Comparison of Release and Debug Settings</b></p> |
| <div class="table-contents"><table class="table" summary="Performance Comparison of Release and Debug Settings"> |
| <colgroup> |
| <col> |
| <col> |
| <col> |
| </colgroup> |
| <thead><tr> |
| <th> |
| <p> |
| Function |
| </p> |
| </th> |
| <th> |
| <p> |
| Microsoft Visual C++ 8.0 |
| </p> |
| <p> |
| Debug Settings: /Od /ZI |
| </p> |
| </th> |
| <th> |
| <p> |
| Microsoft Visual C++ 8.0 |
| </p> |
| <p> |
| Release settings: /Ox /arch:SSE2 |
| </p> |
| </th> |
| </tr></thead> |
| <tbody> |
| <tr> |
| <td> |
| <p> |
| <a class="link" href="sf_erf/error_function.html" title="Error Functions">erf</a> |
| </p> |
| </td> |
| <td> |
| <p> |
| </p> |
| <p>16.65</p> |
| <p> </p> |
| <p>(1.028e-006s)</p> |
| <p> |
| </p> |
| </td> |
| <td> |
| <p> |
| </p> |
| <p><span class="bold"><strong>1.00</strong></span></p> |
| <p> </p> |
| <p>(1.483e-007s)</p> |
| <p> |
| </p> |
| </td> |
| </tr> |
| <tr> |
| <td> |
| <p> |
| <a class="link" href="sf_erf/error_inv.html" title="Error Function Inverses">erf_inv</a> |
| </p> |
| </td> |
| <td> |
| <p> |
| </p> |
| <p>19.28</p> |
| <p> </p> |
| <p>(1.215e-006s)</p> |
| <p> |
| </p> |
| </td> |
| <td> |
| <p> |
| </p> |
| <p><span class="bold"><strong>1.00</strong></span></p> |
| <p> </p> |
| <p>(4.888e-007s)</p> |
| <p> |
| </p> |
| </td> |
| </tr> |
| <tr> |
| <td> |
| <p> |
| <a class="link" href="sf_beta/ibeta_function.html" title="Incomplete Beta Functions">ibeta</a> |
| and <a class="link" href="sf_beta/ibeta_function.html" title="Incomplete Beta Functions">ibetac</a> |
| </p> |
| </td> |
| <td> |
| <p> |
| </p> |
| <p>8.32</p> |
| <p> </p> |
| <p>(1.540e-005s)</p> |
| <p> |
| </p> |
| </td> |
| <td> |
| <p> |
| </p> |
| <p><span class="bold"><strong>1.00</strong></span></p> |
| <p> </p> |
| <p>(1.852e-006s)</p> |
| <p> |
| </p> |
| </td> |
| </tr> |
| <tr> |
| <td> |
| <p> |
| <a class="link" href="sf_beta/ibeta_inv_function.html" title="The Incomplete Beta Function Inverses">ibeta_inv</a> |
| and <a class="link" href="sf_beta/ibeta_inv_function.html" title="The Incomplete Beta Function Inverses">ibetac_inv</a> |
| </p> |
| </td> |
| <td> |
| <p> |
| </p> |
| <p>10.25</p> |
| <p> </p> |
| <p>(7.492e-005s)</p> |
| <p> |
| </p> |
| </td> |
| <td> |
| <p> |
| </p> |
| <p><span class="bold"><strong>1.00</strong></span></p> |
| <p> </p> |
| <p>(7.311e-006s)</p> |
| <p> |
| </p> |
| </td> |
| </tr> |
| <tr> |
| <td> |
| <p> |
| <a class="link" href="sf_beta/ibeta_inv_function.html" title="The Incomplete Beta Function Inverses">ibeta_inva</a>, |
| <a class="link" href="sf_beta/ibeta_inv_function.html" title="The Incomplete Beta Function Inverses">ibetac_inva</a>, |
| <a class="link" href="sf_beta/ibeta_inv_function.html" title="The Incomplete Beta Function Inverses">ibeta_invb</a> |
| and <a class="link" href="sf_beta/ibeta_inv_function.html" title="The Incomplete Beta Function Inverses">ibetac_invb</a> |
| </p> |
| </td> |
| <td> |
| <p> |
| </p> |
| <p>8.57</p> |
| <p> </p> |
| <p>(2.441e-004s)</p> |
| <p> |
| </p> |
| </td> |
| <td> |
| <p> |
| </p> |
| <p><span class="bold"><strong>1.00</strong></span></p> |
| <p> </p> |
| <p>(2.847e-005s)</p> |
| <p> |
| </p> |
| </td> |
| </tr> |
| <tr> |
| <td> |
| <p> |
| <a class="link" href="sf_gamma/igamma.html" title="Incomplete Gamma Functions">gamma_p</a> and |
| <a class="link" href="sf_gamma/igamma.html" title="Incomplete Gamma Functions">gamma_q</a> |
| </p> |
| </td> |
| <td> |
| <p> |
| </p> |
| <p>10.98</p> |
| <p> </p> |
| <p>(1.044e-005s)</p> |
| <p> |
| </p> |
| </td> |
| <td> |
| <p> |
| </p> |
| <p><span class="bold"><strong>1.00</strong></span></p> |
| <p> </p> |
| <p>(9.504e-007s)</p> |
| <p> |
| </p> |
| </td> |
| </tr> |
| <tr> |
| <td> |
| <p> |
| <a class="link" href="sf_gamma/igamma_inv.html" title="Incomplete Gamma Function Inverses">gamma_p_inv</a> |
| and <a class="link" href="sf_gamma/igamma_inv.html" title="Incomplete Gamma Function Inverses">gamma_q_inv</a> |
| </p> |
| </td> |
| <td> |
| <p> |
| </p> |
| <p>10.25</p> |
| <p> </p> |
| <p>(3.721e-005s)</p> |
| <p> |
| </p> |
| </td> |
| <td> |
| <p> |
| </p> |
| <p><span class="bold"><strong>1.00</strong></span></p> |
| <p> </p> |
| <p>(3.631e-006s)</p> |
| <p> |
| </p> |
| </td> |
| </tr> |
| <tr> |
| <td> |
| <p> |
| <a class="link" href="sf_gamma/igamma_inv.html" title="Incomplete Gamma Function Inverses">gamma_p_inva</a> |
| and <a class="link" href="sf_gamma/igamma_inv.html" title="Incomplete Gamma Function Inverses">gamma_q_inva</a> |
| </p> |
| </td> |
| <td> |
| <p> |
| </p> |
| <p>11.26</p> |
| <p> </p> |
| <p>(1.124e-004s)</p> |
| <p> |
| </p> |
| </td> |
| <td> |
| <p> |
| </p> |
| <p><span class="bold"><strong>1.00</strong></span></p> |
| <p> </p> |
| <p>(9.982e-006s)</p> |
| <p> |
| </p> |
| </td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
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| <td align="right"><div class="copyright-footer">Copyright © 2006-2010, 2012-2014 Nikhar Agrawal, |
| Anton Bikineev, Paul A. Bristow, Marco Guazzone, Christopher Kormanyos, Hubert |
| Holin, Bruno Lalande, John Maddock, Johan Råde, Gautam Sewani, Benjamin Sobotta, |
| Thijs van den Berg, Daryle Walker and Xiaogang Zhang<p> |
| Distributed under the Boost Software License, Version 1.0. (See accompanying |
| file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>) |
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