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Diffstat (limited to 'ACE/docs/ACE-guidelines.html')
| -rw-r--r-- | ACE/docs/ACE-guidelines.html | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/ACE/docs/ACE-guidelines.html b/ACE/docs/ACE-guidelines.html index e558e8a06a6..ee72eb9c2d2 100644 --- a/ACE/docs/ACE-guidelines.html +++ b/ACE/docs/ACE-guidelines.html @@ -192,9 +192,16 @@ bgcolor="#ffffff"> those files #include the correct headers. If you do not do this, your code will not compile with the Standard C++ Library.<p> + <li>Always use <strong><code>#if defined (MACRONAME)</code></strong> + to test if a macro is defined, rather than the simpler + <strong><code>#if MACRONAME</code></strong>. Doxygen requires this. + The one exception to this the macros used to prevent multiple + inclusion of header files, as shown below. + <li>Always follow a preprocessor <strong><code>#endif</code></strong> - with a <strong><code>/* */</code></strong> C-style comment. It - should correspond to the condition in the matching + with a <strong><code>/* */</code></strong> C-style comment. Using + C-style comments with preprocessor code is required for some old + compilers. It should correspond to the condition in the matching <strong><code>#if</code></strong> directive. For example, <pre> #if defined (ACE_HAS_THREADS) |