1 /*
2 File: CAByteOrder.h
3 Abstract: Part of CoreAudio Utility Classes
4 Version: 1.1
5
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35 IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL
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43
44 Copyright (C) 2014 Apple Inc. All Rights Reserved.
45
46 */
47 #if !defined(__CAByteOrder_h__)
48 #define __CAByteOrder_h__
49
50 //=============================================================================
51 // Includes
52 //=============================================================================
53
54 // System Includes
55 #if !defined(__COREAUDIO_USE_FLAT_INCLUDES__)
56 #include <CoreFoundation/CoreFoundation.h>
57 #else
58 #include "CoreFoundation.h"
59 #endif
60
61
62 #if defined(__cplusplus)
63 extern "C" {
64 #endif
65
CASwapFloat32(Float32 arg)66 CF_INLINE Float32 CASwapFloat32 (Float32 arg) {
67 union {
68 Float32 f;
69 UInt32 i;
70 } flip;
71
72 flip.f = arg;
73 flip.i = CFSwapInt32 (flip.i);
74
75 return flip.f;
76 }
77
CASwapFloat64(Float64 arg)78 CF_INLINE Float64 CASwapFloat64 (Float64 arg) {
79 union {
80 Float64 f;
81 UInt64 i;
82 } flip;
83
84 flip.f = arg;
85 flip.i = CFSwapInt64 (flip.i);
86
87 return flip.f;
88 }
89
90 #pragma mark -Flippers
91
CASwapFloat32BigToHost(Float32 arg)92 CF_INLINE Float32 CASwapFloat32BigToHost(Float32 arg) {
93 #if defined(__BIG_ENDIAN__)
94 return arg;
95 #else
96 return CASwapFloat32(arg);
97 #endif
98 }
99
CASwapFloat64BigToHost(Float64 arg)100 CF_INLINE Float64 CASwapFloat64BigToHost(Float64 arg) {
101 #if defined(__BIG_ENDIAN__)
102 return arg;
103 #else
104 return CASwapFloat64(arg);
105 #endif
106 }
107
CASwapFloat32HostToBig(Float32 arg)108 CF_INLINE Float32 CASwapFloat32HostToBig(Float32 arg) {
109 #if defined(__BIG_ENDIAN__)
110 return arg;
111 #else
112 return CASwapFloat32(arg);
113 #endif
114 }
115
CASwapFloat64HostToBig(Float64 arg)116 CF_INLINE Float64 CASwapFloat64HostToBig(Float64 arg) {
117 #if defined(__BIG_ENDIAN__)
118 return arg;
119 #else
120 return CASwapFloat64(arg);
121 #endif
122 }
123
CASwapFloat32LittleToHost(Float32 arg)124 CF_INLINE Float32 CASwapFloat32LittleToHost(Float32 arg) {
125 #if defined(__LITTLE_ENDIAN__)
126 return arg;
127 #else
128 return CASwapFloat32(arg);
129 #endif
130 }
131
CASwapFloat64LittleToHost(Float64 arg)132 CF_INLINE Float64 CASwapFloat64LittleToHost(Float64 arg) {
133 #if defined(__LITTLE_ENDIAN__)
134 return arg;
135 #else
136 return CASwapFloat64(arg);
137 #endif
138 }
139
CASwapFloat32HostToLittle(Float32 arg)140 CF_INLINE Float32 CASwapFloat32HostToLittle(Float32 arg) {
141 #if defined(__LITTLE_ENDIAN__)
142 return arg;
143 #else
144 return CASwapFloat32(arg);
145 #endif
146 }
147
CASwapFloat64HostToLittle(Float64 arg)148 CF_INLINE Float64 CASwapFloat64HostToLittle(Float64 arg) {
149 #if defined(__LITTLE_ENDIAN__)
150 return arg;
151 #else
152 return CASwapFloat64(arg);
153 #endif
154 }
155
156
157 #if defined(__cplusplus)
158 }
159 #endif
160
161 #endif
162