1 #ifndef _SYSTEM_H
2 #define _SYSTEM_H 1
3 
4 /* Some systems do not define EXIT_*, even with STDC_HEADERS.  */
5 #ifndef EXIT_SUCCESS
6 # define EXIT_SUCCESS 0
7 #endif
8 #ifndef EXIT_FAILURE
9 # define EXIT_FAILURE 1
10 #endif
11 
12 #endif
13