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| <div class="section"> |
| <div class="titlepage"><div><div><h2 class="title" style="clear: both"> |
| <a name="math_toolkit.config_macros"></a><a class="link" href="config_macros.html" title="Configuration Macros">Configuration Macros</a> |
| </h2></div></div></div> |
| <p> |
| Almost all configuration details are set up automatically by <code class="computeroutput"><span class="special"><</span><span class="identifier">boost</span><span class="special">\</span><span class="identifier">math</span><span class="special">\</span><span class="identifier">tools</span><span class="special">\</span><span class="identifier">config</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span></code>. |
| </p> |
| <p> |
| In normal use, only policy configuration macros are likely to be used. See |
| <a class="link" href="pol_ref.html" title="Policy Reference">policy reference</a>. |
| </p> |
| <p> |
| For reference, information on Boost.Math macros used internally are described |
| briefly below. |
| </p> |
| <div class="table"> |
| <a name="math_toolkit.config_macros.boost_math_macros"></a><p class="title"><b>Table 1.11. Boost.Math Macros</b></p> |
| <div class="table-contents"><table class="table" summary="Boost.Math Macros"> |
| <colgroup> |
| <col> |
| <col> |
| </colgroup> |
| <thead><tr> |
| <th> |
| <p> |
| MACRO |
| </p> |
| </th> |
| <th> |
| <p> |
| Notes |
| </p> |
| </th> |
| </tr></thead> |
| <tbody> |
| <tr> |
| <td> |
| <p> |
| <code class="computeroutput"><span class="identifier">BOOST_MATH_NO_LONG_DOUBLE_MATH_FUNCTIONS</span></code> |
| </p> |
| </td> |
| <td> |
| <p> |
| Do not produce or use long double functions: this macro gets set |
| when the platform's long double or standard library long double support |
| is absent or buggy. |
| </p> |
| </td> |
| </tr> |
| <tr> |
| <td> |
| <p> |
| <code class="computeroutput"><span class="identifier">BOOST_MATH_USE_FLOAT128</span></code> |
| </p> |
| </td> |
| <td> |
| <p> |
| When set the numeric constants support the <code class="computeroutput"><span class="identifier">__float128</span></code> |
| data type with constants having the <code class="computeroutput"><span class="identifier">Q</span></code> |
| suffix. |
| </p> |
| </td> |
| </tr> |
| <tr> |
| <td> |
| <p> |
| <code class="computeroutput"><span class="identifier">BOOST_MATH_DISABLE_FLOAT128</span></code> |
| </p> |
| </td> |
| <td> |
| <p> |
| When set the numeric constants do not use the <code class="computeroutput"><span class="identifier">__float128</span></code> |
| data type even if the compiler appears to support it. |
| </p> |
| </td> |
| </tr> |
| <tr> |
| <td> |
| <p> |
| <code class="computeroutput"><span class="identifier">BOOST_MATH_NO_REAL_CONCEPT_TESTS</span></code> |
| </p> |
| </td> |
| <td> |
| <p> |
| Do not try to use real concept tests (hardware or software does not |
| support real_concept type). |
| </p> |
| </td> |
| </tr> |
| <tr> |
| <td> |
| <p> |
| <code class="computeroutput"><span class="identifier">BOOST_MATH_CONTROL_FP</span></code> |
| </p> |
| </td> |
| <td> |
| <p> |
| Controls FP hardware exceptions - our tests don't support hardware |
| exceptions on MSVC. May get set to something like: <code class="computeroutput"> <span class="identifier">_control87</span><span class="special">(</span><span class="identifier">MCW_EM</span><span class="special">,</span><span class="identifier">MCW_EM</span><span class="special">)</span></code>. |
| </p> |
| </td> |
| </tr> |
| <tr> |
| <td> |
| <p> |
| <code class="computeroutput"><span class="identifier">BOOST_MATH_NO_DEDUCED_FUNCTION_POINTERS</span></code> |
| </p> |
| </td> |
| <td> |
| <p> |
| This macro is used by our test cases, it is set when an assignment |
| of a function template to a function pointer requires explicit template |
| arguments to be provided on the function name. |
| </p> |
| </td> |
| </tr> |
| <tr> |
| <td> |
| <p> |
| <code class="computeroutput"><span class="identifier">BOOST_MATH_USE_C99</span></code> |
| </p> |
| </td> |
| <td> |
| <p> |
| Use C99 math functions. |
| </p> |
| </td> |
| </tr> |
| <tr> |
| <td> |
| <p> |
| <code class="computeroutput"><span class="identifier">BOOST_NO_NATIVE_LONG_DOUBLE_FP_CLASSIFY</span></code> |
| </p> |
| </td> |
| <td> |
| <p> |
| define if no native (or buggy) <code class="computeroutput"><span class="identifier">fpclassify</span><span class="special">(</span><span class="keyword">long</span> <span class="keyword">double</span><span class="special">)</span></code> |
| even though the other C99 functions are present. |
| </p> |
| </td> |
| </tr> |
| <tr> |
| <td> |
| <p> |
| <code class="computeroutput"><span class="identifier">BOOST_MATH_SMALL_CONSTANT</span><span class="special">(</span><span class="identifier">x</span><span class="special">)</span></code> |
| </p> |
| </td> |
| <td> |
| <p> |
| Helper macro used in our test cases to set underflowing constants |
| set to zero if this would cause compiler issues. |
| </p> |
| </td> |
| </tr> |
| <tr> |
| <td> |
| <p> |
| <code class="computeroutput"><span class="identifier">BOOST_MATH_BUGGY_LARGE_FLOAT_CONSTANTS</span></code> |
| </p> |
| </td> |
| <td> |
| <p> |
| Set if constants too large for a float, will cause "bad" |
| values to be stored in the data, rather than infinity or a suitably |
| large value. |
| </p> |
| </td> |
| </tr> |
| <tr> |
| <td> |
| <p> |
| <code class="computeroutput"><span class="identifier">BOOST_MATH_STD_USING</span></code> |
| </p> |
| </td> |
| <td> |
| <p> |
| Provides <code class="computeroutput"><span class="keyword">using</span></code> statements |
| for many std:: (abs to sqrt) and boost::math (rounds, modf) functions. |
| This allows these functions to be called unqualified so that if |
| <a href="http://en.wikipedia.org/wiki/Argument-dependent_name_lookup" target="_top">argument-dependent |
| Argument Dependent Lookup</a> fails to find a suitable overload, |
| then the std:: versions will also be considered. |
| </p> |
| </td> |
| </tr> |
| <tr> |
| <td> |
| <p> |
| <code class="computeroutput"><span class="identifier">BOOST_FPU_EXCEPTION_GUARD</span></code> |
| </p> |
| </td> |
| <td> |
| <p> |
| Used at the entrypoint to each special function to reset all FPU |
| exception flags prior to internal calculations, and then merge the |
| old and new exception flags on function exit. Used as a workaround |
| on platforms or hardware that behave strangely if any FPU exception |
| flags are set when calling standard library functions. |
| </p> |
| </td> |
| </tr> |
| <tr> |
| <td> |
| <p> |
| <code class="computeroutput"><span class="identifier">BOOST_MATH_INSTRUMENT</span></code> |
| </p> |
| </td> |
| <td> |
| <p> |
| Define to output diagnostics for math functions. This is rather 'global' |
| to Boost.Math and so coarse-grained that it will probably produce |
| copious output! (Especially because full precision values are output). |
| Designed primarily for internal use and development. |
| </p> |
| </td> |
| </tr> |
| <tr> |
| <td> |
| <p> |
| <code class="computeroutput"><span class="identifier">BOOST_MATH_INSTRUMENT_CODE</span><span class="special">(</span><span class="identifier">x</span><span class="special">)</span></code> |
| </p> |
| </td> |
| <td> |
| <p> |
| Output selected named variable, for example <code class="computeroutput"><span class="identifier">BOOST_MATH_INSTRUMENT_CODE</span><span class="special">(</span><span class="string">"guess = "</span> |
| <span class="special"><<</span> <span class="identifier">guess</span><span class="special">)</span></code>; Used by <code class="computeroutput"><span class="identifier">BOOST_MATH_INSTRUMENT</span></code> |
| </p> |
| </td> |
| </tr> |
| <tr> |
| <td> |
| <p> |
| <code class="computeroutput"><span class="identifier">BOOST_MATH_INSTRUMENT_VARIABLE</span><span class="special">(</span><span class="identifier">name</span><span class="special">)</span></code> |
| </p> |
| </td> |
| <td> |
| <p> |
| Output selected variable, for example <code class="computeroutput"><span class="identifier">BOOST_MATH_INSTRUMENT_VARIABLE</span><span class="special">(</span><span class="identifier">result</span><span class="special">);</span></code> Used by <code class="computeroutput"><span class="identifier">BOOST_MATH_INSTRUMENT</span></code> |
| </p> |
| </td> |
| </tr> |
| <tr> |
| <td> |
| <p> |
| <code class="computeroutput"><span class="identifier">BOOST_MATH_INSTRUMENT_FPU</span></code> |
| </p> |
| </td> |
| <td> |
| <p> |
| Output the state of the FPU's control flags. |
| </p> |
| </td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| <br class="table-break"><div class="table"> |
| <a name="math_toolkit.config_macros.boost_math_tuning"></a><p class="title"><b>Table 1.12. Boost.Math Tuning</b></p> |
| <div class="table-contents"><table class="table" summary="Boost.Math Tuning"> |
| <colgroup> |
| <col> |
| <col> |
| </colgroup> |
| <thead><tr> |
| <th> |
| <p> |
| Macros for Tuning performance options for specific compilers |
| </p> |
| </th> |
| <th> |
| <p> |
| Notes |
| </p> |
| </th> |
| </tr></thead> |
| <tbody> |
| <tr> |
| <td> |
| <p> |
| <code class="computeroutput"><span class="identifier">BOOST_MATH_POLY_METHOD</span></code> |
| </p> |
| </td> |
| <td> |
| <p> |
| See the <a class="link" href="tuning.html" title="Performance Tuning Macros">performance tuning section</a>. |
| </p> |
| </td> |
| </tr> |
| <tr> |
| <td> |
| <p> |
| <code class="computeroutput"><span class="identifier">BOOST_MATH_RATIONAL_METHOD</span></code> |
| </p> |
| </td> |
| <td> |
| <p> |
| See the <a class="link" href="tuning.html" title="Performance Tuning Macros">performance tuning section</a>. |
| </p> |
| </td> |
| </tr> |
| <tr> |
| <td> |
| <p> |
| <code class="computeroutput"><span class="identifier">BOOST_MATH_MAX_POLY_ORDER</span></code> |
| </p> |
| </td> |
| <td> |
| <p> |
| See the <a class="link" href="tuning.html" title="Performance Tuning Macros">performance tuning section</a>. |
| </p> |
| </td> |
| </tr> |
| <tr> |
| <td> |
| <p> |
| <code class="computeroutput"><span class="identifier">BOOST_MATH_INT_TABLE_TYPE</span></code> |
| </p> |
| </td> |
| <td> |
| <p> |
| See the <a class="link" href="tuning.html" title="Performance Tuning Macros">performance tuning section</a>. |
| </p> |
| </td> |
| </tr> |
| <tr> |
| <td> |
| <p> |
| <code class="computeroutput"><span class="identifier">BOOST_MATH_INT_VALUE_SUFFIX</span></code> |
| </p> |
| </td> |
| <td> |
| <p> |
| Helper macro for appending the correct suffix to integer constants |
| which may actually be stored as reals depending on the value of BOOST_MATH_INT_TABLE_TYPE. |
| </p> |
| </td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| <br class="table-break"> |
| </div> |
| <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> |
| <td align="left"></td> |
| <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>) |
| </p> |
| </div></td> |
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