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/*
* Copyright (c) 1987, 1989 University of Maryland
* Department of Computer Science. All rights reserved.
* Permission to copy for any purpose is hereby granted
* so long as this copyright notice remains intact.
*/
/*
* File I/O subroutines for getting bytes, words, 3bytes, and longwords.
* N.B.: these believe they are working on a DVI file.
*/
#include <stdio.h>
#include "types.h"
#include "error.h"
#include "fio.h"
static char eofmsg[] = "unexpected EOF, help";
/* for symmetry: */
#define fGetByte(fp, r) ((r) = getc(fp))
#define Sign32(i) (i)
#define make(name, func, signextend) \
i32 \
name(FILE *fp) \
{ \
register i32 n; \
\
func(fp, n); \
if (feof(fp)) \
error(1, 0, eofmsg); \
return (signextend(n)); \
}
make(GetByte, fGetByte, Sign8)
make(GetWord, fGetWord, Sign16)
make(Get3Byte, fGet3Byte, Sign24)
make(GetLong, fGetLong, Sign32)
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