#include <portab.h>

#define BUFSIZ	   512
#define MAXFILES   16
struct _iobuf {
	WORD _fd;
	WORD _flag;
	BYTE *_base;
	BYTE *_ptr;
	WORD _cnt;
};
#ifndef FILE
extern struct _iobuf _iob[MAXFILES];
#define FILE struct _iobuf
#endif
#define NULLFILE ((FILE *)0)

#define _IOREAD 0x01
#define _IOWRT	0x02
#define _IOABUF 0x04
#define _IONBUF 0x08
#define _IOERR	0x10
#define _IOEOF	0x20
#define _IOLBUF 0x40
#define _IOSTRI 0x80
#define _IOASCI 0x100

#define stdin  (&_iob[0])
#define stdout (&_iob[1])
#define stderr (&_iob[2])

#define clearerr(p) ((p)->_flag &= ~_IOERR)
#define feof(p) ((p)->_flag & _IOEOF)
#define ferror(p) ((p)->_flag & _IOERR)
#define fileno(p) ((p)->_fd)
#define getchar() getc(stdin)
#define putchar(c) putc(c,stdout)
#define putc fputc
#define getc fgetc


#define abs(x)	((x) < 0 ? -(x) : (x))

#define MAX(x,y)   (((x) > (y)) ? (x) :  (y))
#define MIN(x,y)   (((x) < (y)) ? (x) :  (y))


/*   Defined supplied functions  */

extern long    atol();
extern double  atof();
extern char    *sbrk();
extern char    *calloc() , *malloc() , *realloc() , *zalloc();
extern double  cos() , sin();
extern double  exp() , fabs();
extern FILE    *fopen() , *fopena() , *fopenb();
extern FILE    *freopen() , *freopa() , *freopb();
extern FILE    *fdopen();
extern void    perror();
extern long    ftell();
extern long    getl();
extern char    *getpass();
extern char    *gets() , *fgets();
extern char    *index() , *rindex() , *strchr() , *strrchr();
extern double  log() , log10();
extern long    lseek() , tell();
extern char    *mktemp();
extern long    putl();
extern void    longjmp();
extern double  sqrt();
extern char    *strcat() , *strncat();
extern char    *strcpy() , *strncpy();
extern double  tan() , atan();
extern char    *ttyname();