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| <p> |
| The library is fully thread safe and re-entrant provided the function and |
| class templates in the library are instantiated with built-in floating point |
| types: i.e. the types <code class="computeroutput"><span class="keyword">float</span></code>, |
| <code class="computeroutput"><span class="keyword">double</span></code> and <code class="computeroutput"><span class="keyword">long</span> |
| <span class="keyword">double</span></code>. |
| </p> |
| <p> |
| However, the library <span class="bold"><strong>is not thread safe</strong></span> |
| when used with user-defined (i.e. class type) numeric types. |
| </p> |
| <p> |
| The reason for the latter limitation is the need to initialise symbolic constants |
| using constructs such as: |
| </p> |
| <pre class="programlisting"><span class="keyword">static</span> <span class="keyword">const</span> <span class="identifier">T</span> <span class="identifier">coefficient_array</span> <span class="special">=</span> <span class="special">{</span> <span class="special">...</span> <span class="identifier">list</span> <span class="identifier">of</span> <span class="identifier">values</span> <span class="special">...</span> <span class="special">};</span> |
| </pre> |
| <p> |
| Which is always thread safe when T is a built-in floating point type, but |
| not when T is a user defined type: as in this case there is a need for T's |
| constructors to be run, leading to potential race conditions. |
| </p> |
| <p> |
| This limitation may be addressed in a future release. |
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| Hubert Holin, Xiaogang Zhang, Bruno Lalande, Johan Råde, Gautam Sewani and |
| Thijs van den Berg<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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