Commit | Line | Data |
---|---|---|
c6667804 | 1 | ?RCS: $Id$ |
d8875586 MBT |
2 | ?RCS: |
3 | ?RCS: Copyright (c) 1991-1997, 2004-2006, Raphael Manfredi | |
cf39bd7e | 4 | ?RCS: |
c6667804 | 5 | ?RCS: You may redistribute only under the terms of the Artistic License, |
d8875586 MBT |
6 | ?RCS: as specified in the README file that comes with the distribution. |
7 | ?RCS: You may reuse parts of this distribution only within the terms of | |
c6667804 | 8 | ?RCS: that same Artistic License; a copy of which may be found at the root |
d8875586 MBT |
9 | ?RCS: of the source tree for dist 4.0. |
10 | ?RCS: | |
11 | ?RCS: $Log: charorder.U,v $ | |
12 | ?RCS: Revision 3.0.1.1 1994/10/29 16:07:08 ram | |
13 | ?RCS: patch36: added ?F: line for metalint file checking | |
14 | ?RCS: | |
15 | ?RCS: Revision 3.0 1993/08/18 12:05:33 ram | |
16 | ?RCS: Baseline for dist 3.0 netwide release. | |
17 | ?RCS: | |
18 | ?MAKE:chorder_int chorder_short chorder_long: Myread cat +cc +ccflags rm | |
19 | ?MAKE: -pick add $@ %< | |
20 | ?S:chorder_short (d_cos d_bos): | |
21 | ?S: Holds the value describing the byte ordering of characters in a short. | |
22 | ?S: On a Big-Endian machine, that would be "c0c1". | |
23 | ?S:. | |
24 | ?S:chorder_int (charoder): | |
25 | ?S: Holds the value describing the byte ordering of characters in an int. | |
26 | ?S: For instance, on a Big-Endian machine, this would be: "c0c1c2c3". | |
27 | ?S:. | |
28 | ?S:chorder_long (d_col d_bol): | |
29 | ?S: Holds the value describing the byte ordering of characters in a long. | |
30 | ?S: On a 64 bits Big-Endian machine, that would yield: "c0c1c2c3c4c5c6c7". | |
31 | ?S:. | |
32 | ?C:CHAR_ORDER_SHORT: | |
33 | ?C: Holds the byte ordering of characters in a short. It's a string | |
34 | ?C: value like "c0c1" on a Big-Endian machine. | |
35 | ?C:. | |
36 | ?C:CHAR_ORDER_INT: | |
37 | ?C: Holds the byte ordering of characters in an int. It's a string | |
38 | ?C: value like "c0c1c2c3" on a Big-Endian machine. | |
39 | ?C:. | |
40 | ?C:CHAR_ORDER_LONG: | |
41 | ?C: Holds the byte ordering of characters in a long. It's a string | |
42 | ?C: value like "c0c1c2c3c4c5c6c7" on a 64 bits Big-Endian machine. | |
43 | ?C:. | |
44 | ?H:#define CHAR_ORDER_SHORT "$chorder_short" /* byte order in a short */ | |
45 | ?H:#define CHAR_ORDER_INT "$chorder_int" /* byte order in an int */ | |
46 | ?H:#define CHAR_ORDER_LONG "$chorder_long" /* byte order in a long */ | |
47 | ?H:. | |
48 | ?F:!byteorder | |
49 | : check for character ordering | |
50 | echo " " | |
51 | echo "Checking out byte order..." >&4 | |
52 | $cat >byteorder.c <<'EOCP' | |
53 | #include <stdio.h> | |
54 | ||
55 | main(argc, argv) | |
56 | int argc; | |
57 | char *argv[]; { | |
58 | int i; | |
59 | int max; | |
60 | union { | |
61 | short u_s; | |
62 | int u_i; | |
63 | long u_l; | |
64 | char u_c[sizeof(long)]; | |
65 | } u; | |
66 | switch (argv[1][0]) { | |
67 | case 'l': | |
68 | u.u_l = 0L; | |
69 | /* HMS: ASSERT: sizeof(long) < 10. */ | |
70 | for(i = 0; i < sizeof(long); ++i) { | |
71 | u.u_l *= 0x100L; | |
72 | u.u_l += (0xc0 + i); | |
73 | } | |
74 | max = sizeof(long); | |
75 | break; | |
76 | case 's': | |
77 | u.u_s = 0; | |
78 | /* HMS: ASSERT: sizeof(short) < 10. */ | |
79 | for(i = 0; i < sizeof(short); ++i) { | |
80 | u.u_s *= 0x100L; | |
81 | u.u_s += (0xc0 + i); | |
82 | } | |
83 | max = sizeof(short); | |
84 | break; | |
85 | case 'i': | |
86 | u.u_i = 0; | |
87 | /* RAM: ASSERT: sizeof(int) < 10. */ | |
88 | for(i = 0; i < sizeof(int); ++i) { | |
89 | u.u_l *= 0x100L; | |
90 | u.u_l += (0xc0 + i); | |
91 | } | |
92 | max = sizeof(int); | |
93 | break; | |
94 | default: | |
95 | max = 0; | |
96 | break; | |
97 | } | |
98 | for(i = 0; i < max; i++) { | |
99 | printf("%x", u.u_c[i] & 0x00FF); | |
100 | } | |
101 | printf("\n"); | |
102 | exit(0); | |
103 | } | |
104 | EOCP | |
105 | if $cc $ccflags -o byteorder byteorder.c >/dev/null 2>&1 ; then | |
106 | : null statement | |
107 | @if chorder_short | |
108 | chorder_short=`./byteorder s` | |
109 | @end | |
110 | @if chorder_int | |
111 | chorder_int=`./byteorder i` | |
112 | @end | |
113 | @if chorder_long | |
114 | chorder_long=`./byteorder l` | |
115 | @end | |
116 | else | |
117 | $cat <<EOM | |
118 | (I can't seem to get my test program to work. Guessing 32 bits big-endian.) | |
119 | EOM | |
120 | chorder_short="c0c1" | |
121 | chorder_int="c0c1c2c3" | |
122 | chorder_long="c0c1c2c3" | |
123 | fi | |
124 | @if chorder_short | |
125 | dflt=$chorder_short | |
126 | rp='What is the order of characters in a short?' | |
127 | . ./myread | |
128 | chorder_short="$ans" | |
129 | @end | |
130 | @if chorder_int | |
131 | dflt=$chorder_int | |
132 | rp='What is the order of characters in an int?' | |
133 | . ./myread | |
134 | chorder_int="$ans" | |
135 | @end | |
136 | @if chorder_long | |
137 | dflt=$chorder_long | |
138 | rp='What is the order of characters in a long?' | |
139 | . ./myread | |
140 | chorder_long="$ans" | |
141 | @end | |
142 | $rm -f byteorder* core | |
143 |