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<h1>/home/pvrabec/openscap/openscap-0.5.7/tests/include/assume.h</h1><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="preprocessor">#pragma once</span>
<a name="l00002"></a>00002 <span class="preprocessor"></span><span class="preprocessor">#ifndef ASSUME_H</span>
<a name="l00003"></a>00003 <span class="preprocessor"></span><span class="preprocessor">#define ASSUME_H</span>
<a name="l00004"></a>00004 <span class="preprocessor"></span>
<a name="l00005"></a>00005 <span class="preprocessor">#include <stdio.h></span>
<a name="l00006"></a>00006 <span class="preprocessor">#include <stdlib.h></span>
<a name="l00007"></a>00007
<a name="l00008"></a>00008 <span class="comment">/*</span>
<a name="l00009"></a>00009 <span class="comment"> * Usage:</span>
<a name="l00010"></a>00010 <span class="comment"> *</span>
<a name="l00011"></a>00011 <span class="comment"> * 1. assume(expr)</span>
<a name="l00012"></a>00012 <span class="comment"> *</span>
<a name="l00013"></a>00013 <span class="comment"> * Check whether expr is true, call abort() if not (= assert)</span>
<a name="l00014"></a>00014 <span class="comment"> *</span>
<a name="l00015"></a>00015 <span class="comment"> * 2. assume(expr, f_branch)</span>
<a name="l00016"></a>00016 <span class="comment"> * </span>
<a name="l00017"></a>00017 <span class="comment"> * Check whether expr is true, execute f_branch if not and</span>
<a name="l00018"></a>00018 <span class="comment"> * then call abort(). break can be used to skip the call to</span>
<a name="l00019"></a>00019 <span class="comment"> * abort().</span>
<a name="l00020"></a>00020 <span class="comment"> * </span>
<a name="l00021"></a>00021 <span class="comment"> * 3. assume(expr, f_branch, t_branch)</span>
<a name="l00022"></a>00022 <span class="comment"> *</span>
<a name="l00023"></a>00023 <span class="comment"> * Check whether expr is true, execute f_branch if not and</span>
<a name="l00024"></a>00024 <span class="comment"> * call abort(). If expr is true, then execute t_branch.</span>
<a name="l00025"></a>00025 <span class="comment"> * </span>
<a name="l00026"></a>00026 <span class="comment"> * </span>
<a name="l00027"></a>00027 <span class="comment"> */</span>
<a name="l00028"></a>00028
<a name="l00029"></a>00029 <span class="preprocessor">#define __LB(l, ...) l</span>
<a name="l00030"></a>00030 <span class="preprocessor"></span><span class="preprocessor">#define __RB(l, ...) __VA_ARGS__</span>
<a name="l00031"></a>00031 <span class="preprocessor"></span>
<a name="l00032"></a>00032 <span class="preprocessor">#define __assume(expr, exprstr, ...) \</span>
<a name="l00033"></a>00033 <span class="preprocessor"> do { \</span>
<a name="l00034"></a>00034 <span class="preprocessor"> if (!(expr)) { \</span>
<a name="l00035"></a>00035 <span class="preprocessor"> fprintf (stderr, "%s:%d (%s): Assumption `%s' not fulfilled!\n", __FILE__, __LINE__, __PRETTY_FUNCTION__, exprstr); \</span>
<a name="l00036"></a>00036 <span class="preprocessor"> do { __LB(__VA_ARGS__) } while(abort(),0); \</span>
<a name="l00037"></a>00037 <span class="preprocessor"> } else { \</span>
<a name="l00038"></a>00038 <span class="preprocessor"> do { __RB(__VA_ARGS__) } while(0); \</span>
<a name="l00039"></a>00039 <span class="preprocessor"> } \</span>
<a name="l00040"></a>00040 <span class="preprocessor"> } while (0)</span>
<a name="l00041"></a>00041 <span class="preprocessor"></span>
<a name="l00042"></a>00042 <span class="preprocessor">#if defined(__GNUC__)</span>
<a name="l00043"></a>00043 <span class="preprocessor"></span><span class="preprocessor"># define assume(expr, ...) __assume(__builtin_expect(expr, 1), #expr, __VA_ARGS__)</span>
<a name="l00044"></a>00044 <span class="preprocessor"></span><span class="preprocessor">#else</span>
<a name="l00045"></a>00045 <span class="preprocessor"></span><span class="preprocessor"># define assume(expr, ...) __assume(expr, #expr, __VA_ARGS__)</span>
<a name="l00046"></a>00046 <span class="preprocessor"></span><span class="preprocessor">#endif</span>
<a name="l00047"></a>00047 <span class="preprocessor"></span>
<a name="l00048"></a>00048 <span class="preprocessor">#endif </span><span class="comment">/* ASSUME_H */</span>
</pre></div></div>
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