1/*
2 * Copyright (c) 2004 The Regents of The University of Michigan
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are
7 * met: redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer;

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86#if defined(linux)
87 return bswap_16(x);
88#else
89 return (uint16_t)(((uint16_t)(x) & 0xff) << 8 |
90 ((uint16_t)(x) & 0xff00) >> 8);
91#endif
92}
93
94//This lets the compiler figure out how to call the swap_byte functions above
95//for different data types.
96static inline uint64_t swap_byte(uint64_t x) {return swap_byte64(x);}
97static inline int64_t swap_byte(int64_t x) {return swap_byte64((uint64_t)x);}
98static inline uint32_t swap_byte(uint32_t x) {return swap_byte32(x);}
99static inline int32_t swap_byte(int32_t x) {return swap_byte32((uint32_t)x);}
100//This is to prevent the following two functions from compiling on
101//64bit machines. It won't detect everything, so it should be changed.
102#ifndef __x86_64__
103static inline long swap_byte(long x) {return swap_byte32((long)x);}
104static inline unsigned long swap_byte(unsigned long x)
105 { return swap_byte32((unsigned long)x);}
106#endif
107static inline uint16_t swap_byte(uint16_t x) {return swap_byte32(x);}
108static inline int16_t swap_byte(int16_t x) {return swap_byte16((uint16_t)x);}
109static inline uint8_t swap_byte(uint8_t x) {return x;}
110static inline int8_t swap_byte(int8_t x) {return x;}
111static inline double swap_byte(double x) {return swap_byte64((uint64_t)x);}
112static inline float swap_byte(float x) {return swap_byte32((uint32_t)x);}
113
114//The conversion functions with fixed endianness on both ends don't need to
115//be in a namespace
116template <typename T> static inline T betole(T value) {return swap_byte(value);}
117template <typename T> static inline T letobe(T value) {return swap_byte(value);}
118
119//For conversions not involving the guest system, we can define the functions
120//conditionally based on the BYTE_ORDER macro and outside of the namespaces

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