1 #ifndef cg_dfn_h
2 #define cg_dfn_h
3 
4 /*
5  * Flags which mark a symbol as topologically ``busy'' or as
6  * topologically ``not_numbered'':
7  */
8 #define	DFN_BUSY	-1
9 #define	DFN_NAN		0
10 
11 /*
12  * Depth-first numbering of a call-graph.
13  */
14 
15 extern void cg_dfn (Sym * root);
16 
17 #endif /* cg_dfn_h */
18