1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
|
/*
* 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: numbers.
*
* We deal in fixed format numbers and (FILE *)s here.
* For pointer I/O, see pio.h.
*
* N.B.: These do the `wrong thing' at EOF. It is imperative
* that the caller add appropriate `if (feof(fp))' statements.
*/
/*
* Get one unsigned byte. Note that this is a proper expression.
* The reset have more limited contexts, and are therefore OddLy
* CapItaliseD.
*/
#define fgetbyte(fp) getc(fp)
/*
* Get a two-byte unsigned integer, a three-byte unsigned integer,
* or a four-byte signed integer.
*/
#define fGetWord(fp, r) ((r) = getc(fp) << 8, (r) |= getc(fp))
#define fGet3Byte(fp,r) ((r) = getc(fp) << 16, (r) |= getc(fp) << 8, \
(r) |= getc(fp))
#define fGetLong(fp, r) ((r) = getc(fp) << 24, (r) |= getc(fp) << 16, \
(r) |= getc(fp) << 8, (r) |= getc(fp))
/*
* Fast I/O write (and regular write) macros.
*/
#define putbyte(fp, r) ((void) putc((r), fp))
#define PutWord(fp, r) ((void) putc((r) >> 8, fp), \
(void) putc((r), fp))
#define Put3Byte(fp, r) ((void) putc((r) >> 16, fp), \
(void) putc((r) >> 8, fp), \
(void) putc((r), fp))
#define PutLong(fp, r) ((void) putc((r) >> 24, fp), \
(void) putc((r) >> 16, fp), \
(void) putc((r) >> 8, fp), \
(void) putc((r), fp))
/*
* Function types
*/
i32 GetByte(FILE *), GetWord(FILE *), Get3Byte(FILE *), GetLong(FILE *);
|
