1 #ifndef STR_H
2 #define STR_H
3 
4 extern unsigned int str_copy();
5 extern int str_diff();
6 extern int str_diffn();
7 extern unsigned int str_len();
8 extern unsigned int str_chr();
9 extern unsigned int str_rchr();
10 extern int str_start();
11 
12 #define str_equal(s,t) (!str_diff((s),(t)))
13 
14 #endif
15