rcl  master
C API providing common ROS client library functionality.
macros.h
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1 // Copyright 2015 Open Source Robotics Foundation, Inc.
2 //
3 // Licensed under the Apache License, Version 2.0 (the "License");
4 // you may not use this file except in compliance with the License.
5 // You may obtain a copy of the License at
6 //
7 // http://www.apache.org/licenses/LICENSE-2.0
8 //
9 // Unless required by applicable law or agreed to in writing, software
10 // distributed under the License is distributed on an "AS IS" BASIS,
11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 // See the License for the specific language governing permissions and
13 // limitations under the License.
14 
15 #ifndef RCL__MACROS_H_
16 #define RCL__MACROS_H_
17 
18 #ifdef __cplusplus
19 extern "C"
20 {
21 #endif
22 
23 #ifndef _WIN32
24 # define RCL_WARN_UNUSED __attribute__((warn_unused_result))
26 #else
27 # define RCL_WARN_UNUSED _Check_return_
28 #endif
29 
30 #define RCL_UNUSED(x) (void)(x)
31 
32 #ifdef __cplusplus
33 }
34 #endif
35 
36 #endif // RCL__MACROS_H_