C++ Utilities  4.11.0
Common C++ classes and routines used by my applications such as argument parser, IO and conversion utilities
binaryconversion.h
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1 #ifndef CONVERSION_UTILITIES_BINARY_CONVERSION_H
2 #define CONVERSION_UTILITIES_BINARY_CONVERSION_H
3 
4 #include "./types.h"
5 
6 #include "../global.h"
7 
8 #ifdef __BYTE_ORDER__
9 #if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
10 #define CONVERSION_UTILITIES_IS_BYTE_ORDER_LITTLE_ENDIAN false
11 #define CONVERSION_UTILITIES_IS_BYTE_ORDER_BIG_ENDIAN true
12 #define CONVERSION_UTILITIES_BYTE_ORDER_BIG_ENDIAN
13 #elif __BYTE_ORDER__ == __ORDER_PDP_ENDIAN__
14 #define CONVERSION_UTILITIES_IS_BYTE_ORDER_LITTLE_ENDIAN false
15 #define CONVERSION_UTILITIES_IS_BYTE_ORDER_BIG_ENDIAN false
16 #define CONVERSION_UTILITIES_BYTE_ORDER_MIDDLE_ENDIAN
17 #elif __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
18 #define CONVERSION_UTILITIES_IS_BYTE_ORDER_LITTLE_ENDIAN true
19 #define CONVERSION_UTILITIES_IS_BYTE_ORDER_BIG_ENDIAN false
20 #define CONVERSION_UTILITIES_BYTE_ORDER_LITTLE_ENDIAN
21 #endif
22 #endif
23 #ifdef __FLOAT_WORD_ORDER__
24 #if __FLOAT_WORD_ORDER__ == __ORDER_BIG_ENDIAN__
25 #define CONVERSION_UTILITIES_FLOAT_BYTE_ORDER_BIG_ENDIAN
26 #elif __FLOAT_WORD_ORDER__ == __ORDER_PDP_ENDIAN__
27 #define CONVERSION_UTILITIES_FLOAT_BYTE_ORDER_MIDDLE_ENDIAN
28 #elif __FLOAT_WORD_ORDER__ == __ORDER_LITTLE_ENDIAN__
29 #define CONVERSION_UTILITIES_FLOAT_BYTE_ORDER_LITTLE_ENDIAN
30 #endif
31 #endif
32 #if defined(__BYTE_ORDER__) && defined(__FLOAT_WORD_ORDER__)
33 #else
34 #if defined(__i386) || defined(__i386__) || defined(_M_IX86) || defined(__x86_64) || defined(__x86_64__) || defined(__amd64) || defined(_M_X64) \
35  || defined(__LITTLE_ENDIAN__) || defined(_little_endian__) || defined(_LITTLE_ENDIAN) || defined(_WIN32_WCE) || defined(WINAPI_FAMILY)
36 #ifndef __BYTE_ORDER__
37 #define CONVERSION_UTILITIES_IS_BYTE_ORDER_LITTLE_ENDIAN true
38 #define CONVERSION_UTILITIES_IS_BYTE_ORDER_BIG_ENDIAN false
39 #define CONVERSION_UTILITIES_BYTE_ORDER_LITTLE_ENDIAN
40 #endif
41 #ifndef __FLOAT_WORD_ORDER__
42 #define CONVERSION_UTILITIES_FLOAT_BYTE_ORDER_LITTLE_ENDIAN
43 #endif
44 #elif defined(__MIPSEB__) || defined(__s390__) || defined(__BIG_ENDIAN__) || defined(_big_endian__) || defined(_BIG_ENDIAN)
45 #ifndef __BYTE_ORDER__
46 #define CONVERSION_UTILITIES_IS_BYTE_ORDER_LITTLE_ENDIAN false
47 #define CONVERSION_UTILITIES_IS_BYTE_ORDER_BIG_ENDIAN true
48 #define CONVERSION_UTILITIES_BYTE_ORDER_BIG_ENDIAN
49 #endif
50 #ifndef __FLOAT_WORD_ORDER__
51 #define CONVERSION_UTILITIES_FLOAT_BYTE_ORDER_BIG_ENDIAN
52 #endif
53 #else
54 #error "Unable to determine byte order!"
55 #endif
56 #endif
57 
58 #if defined(CONVERSION_UTILITIES_BYTE_ORDER_MIDDLE_ENDIAN)
59 #error "Middle endian byte order is not supported!"
60 #endif
61 #if defined(CONVERSION_UTILITIES_FLOAT_BYTE_ORDER_MIDDLE_ENDIAN)
62 #error "Middle endian byte order is not supported!"
63 #endif
64 
66 
71 namespace BE {
72 
73 #if defined(CONVERSION_UTILITIES_BYTE_ORDER_LITTLE_ENDIAN)
74 #define CONVERSION_UTILITIES_BINARY_CONVERSION_INTERNAL 0
75 #elif defined(CONVERSION_UTILITIES_BYTE_ORDER_BIG_ENDIAN)
76 #define CONVERSION_UTILITIES_BINARY_CONVERSION_INTERNAL 1
77 #endif
79 #undef CONVERSION_UTILITIES_BINARY_CONVERSION_INTERNAL
80 }
81 
86 namespace LE {
87 
88 #if defined(CONVERSION_UTILITIES_BYTE_ORDER_LITTLE_ENDIAN)
89 #define CONVERSION_UTILITIES_BINARY_CONVERSION_INTERNAL 1
90 #elif defined(CONVERSION_UTILITIES_BYTE_ORDER_BIG_ENDIAN)
91 #define CONVERSION_UTILITIES_BINARY_CONVERSION_INTERNAL 0
92 #endif
94 #undef CONVERSION_UTILITIES_BINARY_CONVERSION_INTERNAL
95 }
96 
100 CPP_UTILITIES_EXPORT constexpr uint16 toFixed8(float32 float32value)
101 {
102  return static_cast<uint16>(float32value * 256.0f);
103 }
104 
108 CPP_UTILITIES_EXPORT constexpr float32 toFloat32(uint16 fixed8value)
109 {
110  return static_cast<float32>(fixed8value) / 256.0f;
111 }
112 
116 CPP_UTILITIES_EXPORT constexpr uint32 toFixed16(float32 float32value)
117 {
118  return static_cast<uint32>(float32value * 65536.0f);
119 }
120 
124 CPP_UTILITIES_EXPORT constexpr float32 toFloat32(uint32 fixed16value)
125 {
126  return static_cast<float32>(fixed16value) / 65536.0f;
127 }
128 
135 {
136  return ((normalInt & 0x0000007fu)) | ((normalInt & 0x00003f80u) << 1) | ((normalInt & 0x001fc000u) << 2) | ((normalInt & 0x0fe00000u) << 3);
137 }
138 
145 {
146  return ((synchsafeInt & 0x0000007fu)) | ((synchsafeInt & 0x00007f00u) >> 1) | ((synchsafeInt & 0x007f0000u) >> 2)
147  | ((synchsafeInt & 0x7f000000u) >> 3);
148 }
149 
154 {
155  return ((value >> 8) & 0x00FF) | ((value << 8) & 0xFF00);
156 }
157 
162 {
163  return (value >> 24) | ((value & 0x00FF0000) >> 8) | ((value & 0x0000FF00) << 8) | (value << 24);
164 }
165 
170 {
171  return (value >> (7 * 8)) | ((value & 0x00FF000000000000) >> (5 * 8)) | ((value & 0x0000FF0000000000) >> (3 * 8))
172  | ((value & 0x000000FF00000000) >> (1 * 8)) | ((value & 0x00000000FF000000) << (1 * 8)) | ((value & 0x0000000000FF0000) << (3 * 8))
173  | ((value & 0x000000000000FF00) << (5 * 8)) | ((value) << (7 * 8));
174 }
175 } // namespace ConversionUtilities
176 
177 #endif // CONVERSION_UTILITIES_BINARY_CONVERSION_H
CPP_UTILITIES_EXPORT constexpr uint16 toFixed8(float32 float32value)
Returns the 8.8 fixed point representation converted from the specified 32-bit floating point number...
std::uint64_t uint64
unsigned 64-bit integer
Definition: types.h:49
CPP_UTILITIES_EXPORT constexpr uint16 swapOrder(uint16 value)
Swaps the byte order of the specified 16-bit unsigned integer.
Contains several functions providing conversions between different data types.
std::uint32_t uint32
unsigned 32-bit integer
Definition: types.h:44
CPP_UTILITIES_EXPORT constexpr uint32 toSynchsafeInt(uint32 normalInt)
Returns a 32-bit synchsafe integer converted from a normal 32-bit integer.
CPP_UTILITIES_EXPORT constexpr float32 toFloat32(uint16 fixed8value)
Returns a 32-bit floating point number converted from the specified 8.8 fixed point representation...
CPP_UTILITIES_EXPORT constexpr uint32 toNormalInt(uint32 synchsafeInt)
Returns a normal 32-bit integer converted from a 32-bit synchsafe integer.
CPP_UTILITIES_EXPORT constexpr uint32 toFixed16(float32 float32value)
Returns the 16.16 fixed point representation converted from the specified 32-bit floating point numbe...
#define CPP_UTILITIES_EXPORT
Marks the symbol to be exported by the c++utilities library.
std::uint16_t uint16
unsigned 16-bit integer
Definition: types.h:39