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