/************************************************************
**
**       COPYRIGHT (C) 1988 UNIVERSITY OF PITTSBURGH
**       COPYRIGHT (C) 1988-1989 Alan R. Martello
**                  ALL RIGHTS RESERVED
**
**        This software is distributed on an as-is basis
**        with no warranty implied or intended.  No author
**        or distributor takes responsibility to anyone 
**        regarding its use of or suitability.
**
**        The software may be distributed and modified 
**        freely for academic and other non-commercial
**        use but may NOT be utilized or included in whole
**        or part within any commercial product.
**
**        This copyright notice must remain on all copies 
**        and modified versions of this software.
**
************************************************************/

int sig_2_int();
char *int_2_sig();
void sig_assign();
char *cg_not();
char *cg_null();
char *cg_and();
char *cg_or();
char *cg_nand();
char *cg_nor();
char *cg_xor();
char *cg_concat();