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<title>GNU Scientific Library &ndash; Reference Manual: ANSI C Compliance</title>

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Next: <a href="Inline-functions.html#Inline-functions" accesskey="n" rel="next">Inline functions</a>, Previous: <a href="Shared-Libraries.html#Shared-Libraries" accesskey="p" rel="previous">Shared Libraries</a>, Up: <a href="Using-the-library.html#Using-the-library" accesskey="u" rel="up">Using the library</a> &nbsp; [<a href="Function-Index.html#Function-Index" title="Index" rel="index">Index</a>]</p>
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<a name="ANSI-C-Compliance-1"></a>
<h3 class="section">2.4 ANSI C Compliance</h3>

<p>The library is written in ANSI C and is intended to conform to the ANSI
C standard (C89).  It should be portable to any system with a working
ANSI C compiler.
</p>
<p>The library does not rely on any non-ANSI extensions in the interface it
exports to the user.  Programs you write using GSL can be ANSI
compliant.  Extensions which can be used in a way compatible with pure
ANSI C are supported, however, via conditional compilation.  This allows
the library to take advantage of compiler extensions on those platforms
which support them.
</p>
<p>When an ANSI C feature is known to be broken on a particular system the
library will exclude any related functions at compile-time.  This should
make it impossible to link a program that would use these functions and
give incorrect results.
</p>
<p>To avoid namespace conflicts all exported function names and variables
have the prefix <code>gsl_</code>, while exported macros have the prefix
<code>GSL_</code>.
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