/* file: dblib.h	G. Moody	13 April 1989
                        Last revised:   13 April 1997         dblib 9.7
External definitions for DB library private functions

Copyright (C) Massachusetts Institute of Technology 1997. All rights reserved.

These definitions may be included in DB library source files to permit them
to share information about library private functions, which are not intended
to be invoked directly by user programs.  By convention, all externally defined
symbols reserved to the library begin with the characters "db_".
*/

/* Define the symbol _WINDLL if this library is to be compiled as a Microsoft
Windows DLL.  Note that a DLL's private functions (such as those listed below)
*cannot* be called by Windows user programs, which can call only DLL functions
that use the Pascal calling interface (see db.h).  To compile this library
for use in a Microsoft Windows application, but *not* as a DLL, define the
symbol _WINDOWS instead of _WINDLL. */
/* #define _WINDLL */

#if defined(_WINDLL)
#if !defined(_WINDOWS)
#define _WINDOWS
#endif
#define DBNOSORT
#endif

#if defined(_WINDOWS) && !defined(MSDOS)
#define MSDOS
#endif

/* Define the symbol MSDOS if this library is to be used under MS-DOS or MS
Windows.  Note: MSDOS is predefined by some MS-DOS and MS Windows compilers. */
/* #define MSDOS */

/* Uncomment the next line if this software is to be compiled on a Macintosh.*/
/* #define MAC */
/* Macintosh users only:  If the version of "ISO 9660 File Access" in the
"System:Extensions" folder is earlier than 5.0, either update your system
software (recommended) or uncomment the next line. */
/* #define FIXISOCD */

/* DEFDBP is the default value of the DB path if the DB environment variable
is not set.  In most cases, it is sufficient to use an empty string for this
purpose (thus restricting the search for DB files to the current directory).
DEFDBP must not be NULL, however.  The default given below for the Macintosh
specifies that the DB path is to be read from the file udb/dbpath.mac on the
third edition of the MIT-BIH Arrhythmia Database CD-ROM (which has a volume
name of `MITADB3');  you may prefer to use a file on a writable disk for this
purpose to make reconfiguration possible.  See getdb() in dbio.c for further
information. */
#ifdef MAC
# ifdef FIXISOCD
#  define DEFDBP	"@MITADB3:UDB:DBPATH.MAC;1"
# else
#  define DEFDBP	"@MITADB3:UDB:DBPATH.MAC"
# define __STDC__
# endif
#else
# define DEFDBP	""
#endif

/* DEFDBC is the name of the default DB calibration file, used if the DBCAL
environment variable is not set.  This name need not include path information
if the calibration file is located in a directory included in the DB path.  The
value given below is the name of the standard calibration file supplied on the
various CD-ROM databases.  DEFDBC may be NULL if you prefer not to have a
default calibration file.  See calopen() in calib.c for further information. */
#define DEFDBC "dbcal"

#ifndef FILE
#include <stdio.h>
/* stdin/stdout may not be defined in some environments (e.g., for MS Windows
   DLLs).  Defining them as NULL here allows the DB library to be compiled in
   such environments (it does not allow use of stdin/stdout when the operating
   environment does not provide them, however). */
#ifndef stdin
#define stdin NULL
#endif
#ifndef stdout
#define stdout NULL
#endif
#endif

#include "db.h"

/* The following block is needed only to declare the values returned by
malloc() (either char * or void *) and sprintf() (either int or char *).
The object code should be correct even if these declarations are not. */
#if defined(__STDC__) || defined(_WINDOWS)
# include <stdlib.h>
#else
# ifndef NOMALLOC_H
# include <malloc.h>
# else
extern char *malloc();
# endif
# ifdef ISPRINTF
extern int sprintf();
# else
#  ifndef MSDOS
extern char *sprintf();
#  endif
# endif
#endif

/* Declare the values returned by atof() and atol() (not needed for ANSI C
or Microsoft Windows C compilers, which have these declarations in stdlib.h,
included above). */
#if !defined(__STDC__) && !defined(_WINDOWS)
extern double atof();
extern long atol();
#endif

#ifndef BSD
# include <string.h>
#else		/* for Berkeley UNIX only */
# include <strings.h>
# define strchr index
#endif

#ifdef _WINDOWS
#ifndef _WIN32	/* these definitions are needed for 16-bit MS Windows only */
#define strcat _fstrcat
#define strchr _fstrchr
#define strcmp _fstrcmp
#define strcpy _fstrcpy
#define strlen _fstrlen
#define strncmp _fstrncmp
#define strtok _fstrtok
#endif
#endif

/* Define function prototypes for ANSI C, MS Windows C, and C++ compilers */
#if defined(__STDC__) || defined(__cplusplus) || defined(c_plusplus) || defined(_WINDOWS)
#if defined(__cplusplus) || defined(c_plusplus)
extern "C" {
#endif

/* These functions are defined in dbio.c */
extern FILE *db_open(char *file_type, char *record, int mode);
extern int db_checkname(char *name, char *description);
extern int db_g16(FILE *fp);
extern long db_g32(FILE *fp);
extern void db_p16(unsigned int x, FILE *fp);
extern void db_p32(long x, FILE *fp);
extern void db_addtopath(char *pathname);
extern void db_error(char *format_string, ...);
extern void db_setirec(char *record_name);

/* These functions are defined in signal.c */
extern void db_sigclose(void);
extern void db_osflush(void);

/* These functions are defined in annot.c */
extern void db_anclose(void);
extern void db_oaflush(void);

#if defined(__cplusplus) || defined(c_plusplus)
}
#endif

#else        /* declare only function return types for non-ANSI C compilers */

extern FILE *db_open();
extern int db_checkname(), db_g16();
extern long db_g32();
extern void db_p16(), db_p32(), db_addtopath(), db_error(), db_setirec(),
    db_sigclose(), db_anclose(), db_osflush(), db_oaflush();

/* Some non-ANSI C libraries (e.g., version 7, BSD 4.2) lack an implementation
of strtok();  define NOSTRTOK to compile the portable version in dbio.c. */
# ifdef NOSTRTOK
extern char *strtok();
# endif

#endif