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1 line
3.2 KiB
C
1 line
3.2 KiB
C
/*****************************************************************************
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*
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* C P / M C H E A D E R F I L E
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* -----------------------------------
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* Copyright 1984 by Digital Research Inc. All rights reserved.
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*
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* This is the standard include file for the CP/M C Run Time Library.
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*
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*****************************************************************************/
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/* */
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#include "portab.h" /* Portability Definitions */
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/* */
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/****************************************************************************
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* Stream I/O File Definitions
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*****************************************************************************/
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#define BUFSIZ 512 /* Standard (ascii) buf size */
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#define MAXFILES 16 /* Max # open files ( < 32 ) */
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struct _iobuf { /* */
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WORD _fd; /* file descriptor for low level io */
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WORD _flag; /* stream info flags */
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BYTE *_base; /* base of buffer */
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BYTE *_ptr; /* current r/w pointer */
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WORD _cnt; /* # chars to be read/have been wrt */
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}; /* */
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#ifndef FILE /* conditionally include: */
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extern struct _iobuf _iob[MAXFILES]; /* an array of this info */
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#define FILE struct _iobuf /* stream definition */
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#endif /************************************/
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/* flag byte definition */
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#define _IOREAD 0x01 /* readable file */
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#define _IOWRT 0x02 /* writeable file */
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#define _IOABUF 0x04 /* alloc'd buffer */
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#define _IONBUF 0x08 /* no buffer */
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#define _IOERR 0x10 /* error has occurred */
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#define _IOEOF 0x20 /* EOF has occurred */
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#define _IOLBUF 0x40 /* handle as line buffer */
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#define _IOSTRI 0x80 /* this stream is really a string */
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#define _IOASCI 0x100 /* this was opened as an ascii file */
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/************************************/
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#define stdin (&_iob[0]) /* standard input stream */
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#define stdout (&_iob[1]) /* " output " */
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#define stderr (&_iob[2]) /* " error " */
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/************************************/
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#define clearerr(p) ((p)->_flag &= ~_IOERR) /* clear error flag */
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#define feof(p) ((p)->_flag & _IOEOF) /* EOF encountered on stream */
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#define ferror(p) ((p)->_flag & _IOERR) /* error encountered on stream */
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#define fileno(p) ((p)->_fd) /* get stream's file descriptor */
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#define getchar() getc(stdin) /* get char from stdin */
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#define putchar(c) putc(c,stdout) /* put char to stdout */
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#define putc fputc
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#define getc fgetc
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/****************************************************************************/
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/* */
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/* M A C R O S */
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/* ----------- */
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/* */
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/* Define some stuff as macros .... */
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/* */
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/****************************************************************************/
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#define abs(x) ((x) < 0 ? -(x) : (x)) /* Absolute value function */
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#define MAX(x,y) (((x) > (y)) ? (x) : (y)) /* Max function */
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#define MIN(x,y) (((x) < (y)) ? (x) : (y)) /* Min function */
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/*************************** end of stdio.h *********************************/
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(x) : (y)) /* Min function */
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/*************************** end of stdio.h *********************************/
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