/*  _______________________________________________________________________
 *
 *                        RDPARM/PTRAJ: APR 2000
 *  _______________________________________________________________________
 *
 *  $Header: /thr/gamow/cvsroot/amber7/src/ptraj/utility.h,v 1.3 2000/05/10 21:52:02 cheatham Exp $
 *
 *  Revision: $Revision: 1.3 $
 *  Date: $Date: 2000/05/10 21:52:02 $
 *  Last checked in by $Author: cheatham $
 *
 *  This source is now archived under CVS at Scripps in the amber7 tree.
 *
 *  NOTE: this is a beta, pre-release version, is under constant development,
 *  probably contains some bugs and is under constant revision; therefore
 *  take care.  Please report bugs (and fixes!) to cheatham@chpc.utah.edu or 
 *  cheatham@cgl.ucsf.edu
 *
 *  Do not distribute this code without explicit permission.
 *  Do not incorporate into other codes without explicit permission.
 *
 *  Current contact information:
 *
 *     Thomas Cheatham, III
 *     2000 East, 30 South, Skaggs Hall 201
 *     Department of Medicinal Chemistry
 *     University of Utah
 *     Salt Lake City, UT 84112-5820
 *     cheatham@chpc.utah.edu
 *     (801) 587-9653
 *     FAX: (801) 585-5366
 *
 *  Other contributors:
 *
 *    David Case (Scripps)
 *    Michael Crowley (Scripps)
 *    Jed Pitera (UCSF)
 *    Vickie Tsui (Scripps)
 *  _______________________________________________________________________
 */


typedef struct _stackType {
  void *entry;
  struct _stackType *next;
} stackType;

#  ifdef __STDC__
typedef void (*fxnPrintStackEntry)(void *);
#  else
typedef void (*fxnPrintStackEntry)();
#  endif

#ifndef UTILITY_MODULE

extern void warning();
extern void error();

#  ifdef __STDC__

extern void * safe_malloc(int);
extern void * safe_realloc(void *, int, int);
extern void   safe_free(void *);
extern int    allocate(void **, int, int, int);

extern int scanString( FILE *,   char *, int, char *);
extern int scanInt(    FILE *,    int *, int, char *);
extern int scanDouble( FILE *, double *, int, char *);

extern void shiftArray( void *, void *, int );
extern int  stringContains(char *, char *);
extern int  stringMatch(char *, char *);
extern char * toLowerCase( char * );

extern void pushBottomStack( stackType **, void * );
extern void pushStack( stackType **, void * );
extern void *popStack( stackType ** );
extern void clearStack( stackType ** );
extern void printStack( stackType **, fxnPrintStackEntry, char * );

#  else

extern void * safe_malloc();
extern void * safe_realloc();
extern void   safe_free();
extern int    allocate();

extern int scanString();
extern int scanInt();
extern int scanDouble();

extern void shiftArray();
extern int  stringContains();
extern int  stringMatch();
extern char * toLowerCase();

extern void pushBottomStack();
extern void pushStack();
extern void *popStack();
extern void clearStack();
extern void printStack();

#  endif
#endif

#define iabs(a) ( a > 0 ? a : -a )

#ifndef TRUE
#define TRUE 1
#endif

#ifndef FALSE
#define FALSE 0
#endif

#ifndef skipWhitespace   
#define skipWhitespace( xxx ) \
  while( ((xxx[0] == '\n') || isspace(xxx[0])) && strlen(xxx) ) xxx++;
#endif