source: buchla-68k/lib700/micons.c@ b28a12e

Last change on this file since b28a12e was b28a12e, checked in by Thomas Lopatic <thomas@…>, 7 years ago

Zero redundant declarations.
  • Property mode set to 100644
File size: 2.3 KB
Line 
1/*
2 =============================================================================
3 micons.c -- motorola / intel format conversion functions
4 Version 3 -- 1987-06-11 -- D.N. Lynx Crowe
5
6 short
7 micons(wi)
8 short wi;
9
10 Convert between motorola and intel format for a short.
11
12 int
13 miconi(wi)
14 int wi;
15
16 Convert between motorola and intel format for an int.
17
18 long
19 miconl(wi)
20 long wi;
21
22 Convert between motorola and intel format for a long.
23 =============================================================================
24*/
25
26#include "ram.h"
27
28#define TESTER 0 /* define non-zero for a test program */
29
30/*
31 */
32
33/*
34 =============================================================================
35 micons(wi) -- Convert between motorola and intel format for a short.
36 =============================================================================
37*/
38
39int16_t micons(int16_t wi)
40{
41 return((int16_t)( ((wi << 8) & 0xFF00) | ((wi >> 8) & 0x00FF) ) );
42}
43
44/*
45 =============================================================================
46 miconi(wi) -- Convert between motorola and intel format for an int.
47 =============================================================================
48*/
49
50int16_t miconi(int16_t wi)
51{
52 if (sizeof (int16_t) == 4)
53 return( ((wi << 24) & 0xFF000000L) | ((wi << 8) & 0x00FF0000L) |
54 ((wi >> 8) & 0x0000FF00L) | ((wi >> 24) & 0x000000FFL) );
55 else
56 return(((wi << 8) & 0xFF00) | ((wi >> 8) & 0x00FF));
57}
58
59/*
60 =============================================================================
61 miconl(wi) -- Convert between motorola and intel format for a long.
62 =============================================================================
63*/
64
65int32_t miconl(int32_t wi)
66{
67 return( ((wi << 24) & 0xFF000000L) | ((wi << 8) & 0x00FF0000L) |
68 ((wi >> 8) & 0x0000FF00L) | ((wi >> 24) & 0x000000FFL) );
69}
70
71/*
72 */
73
74#if TESTER
75
76#include "ram.h"
77
78/*
79 =============================================================================
80 test program for micon functions
81 =============================================================================
82*/
83
84main()
85{
86 printf("micons(0x1234) returned 0x%04x\n", micons(0x1234));
87
88 if (sizeof (int) == 4)
89 printf("miconi(0x1234) returned 0x%04x\n", miconi(0x1234));
90 else
91 printf("miconi(0x12345678L) returned 0x%08lx\n",
92 miconi(0x12345678L));
93
94 printf("miconl(0x12345678L) returned 0x%08lx\n",
95 miconl(0x12345678L));
96}
97
98#endif
99
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