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55 | 3.4.2 Limitations and other considerations</A> | |
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57 | ||
58 | <P> | |
59 | Setting up a given processor to trap IEEE-754 floating point | |
60 | errors currently requires custom code on a per-architecture basis. | |
61 | You may have to modify <tt class="module">fpectl</tt> to control your particular hardware. | |
62 | ||
63 | <P> | |
64 | Conversion of an IEEE-754 exception to a Python exception requires | |
65 | that the wrapper macros <code>PyFPE_START_PROTECT</code> and | |
66 | <code>PyFPE_END_PROTECT</code> be inserted into your code in an appropriate | |
67 | fashion. Python itself has been modified to support the | |
68 | <tt class="module">fpectl</tt> module, but many other codes of interest to numerical | |
69 | analysts have not. | |
70 | ||
71 | <P> | |
72 | The <tt class="module">fpectl</tt> module is not thread-safe. | |
73 | ||
74 | <P> | |
75 | <div class="seealso"> | |
76 | <p class="heading">See Also:</p> | |
77 | ||
78 | <div class="seetext"><p>Some files in the source distribution may be interesting in | |
79 | learning more about how this module operates. | |
80 | The include file <span class="file">Include/pyfpe.h</span> discusses the | |
81 | implementation of this module at some length. | |
82 | <span class="file">Modules/fpetestmodule.c</span> gives several examples of | |
83 | use. | |
84 | Many additional examples can be found in | |
85 | <span class="file">Objects/floatobject.c</span>.</p></div> | |
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122 | <span class="release-info">Release 2.4.2, documentation updated on 28 September 2005.</span> | |
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