From: Michael Göhler <somebody.here@gmx.de>
Date: Tue, 30 Sep 2014 12:35:59 +0000 (+0200)
Subject: add comment to common.h
X-Git-Url: https://git.danieliu.xyz/?a=commitdiff_plain;h=be20bc40619598a5c9af8234ae81ce0a6899651f;p=smdp.git

add comment to common.h
---

diff --git a/include/common.h b/include/common.h
index 23b656c..99c4382 100644
--- a/include/common.h
+++ b/include/common.h
@@ -1,6 +1,31 @@
 #if !defined( COMMON_H )
 #define COMMON_H
 
+/*
+ * Common macros.
+ * Copyright (C) 2014 Michael Goehler
+ *
+ * This file is part of mdp.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ *
+ * macro: MAX returns the higher one of two input variables
+ * macro: MIN returns the lower one of two input variables
+ *
+ */
+
 #define MAX(a, b) ({ typeof(a) _a = a; typeof(b) _b = b; _a > _b? _a : _b; })
 #define MIN(a, b) ({ typeof(a) _a = a; typeof(b) _b = b; _a < _b? _a : _b; })