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Diffstat (limited to 'src/ext/byteorder.h')
| -rw-r--r-- | src/ext/byteorder.h | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/src/ext/byteorder.h b/src/ext/byteorder.h new file mode 100644 index 0000000000..c8ba52184b --- /dev/null +++ b/src/ext/byteorder.h @@ -0,0 +1,67 @@ +/* <MIT License> + Copyright (c) 2013-2014 Marek Majkowski <marek@popcount.org> + + Permission is hereby granted, free of charge, to any person obtaining a copy + of this software and associated documentation files (the "Software"), to deal + in the Software without restriction, including without limitation the rights + to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + copies of the Software, and to permit persons to whom the Software is + furnished to do so, subject to the following conditions: + + The above copyright notice and this permission notice shall be included in + all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + THE SOFTWARE. + </MIT License> + + Original location: + https://github.com/majek/csiphash/ + + Solution inspired by code from: + Samuel Neves (supercop/crypto_auth/siphash24/little) + djb (supercop/crypto_auth/siphash24/little2) + Jean-Philippe Aumasson (https://131002.net/siphash/siphash24.c) +*/ + +/* This code is extracted from csiphash.h */ + +#if defined(__BYTE_ORDER__) && defined(__ORDER_LITTLE_ENDIAN__) && \ + __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__ +# define _le64toh(x) ((uint64_t)(x)) +#elif defined(_WIN32) +/* Windows is always little endian, unless you're on xbox360 + http://msdn.microsoft.com/en-us/library/b0084kay(v=vs.80).aspx */ +# define _le64toh(x) ((uint64_t)(x)) +#elif defined(__APPLE__) +# include <libkern/OSByteOrder.h> +# define _le64toh(x) OSSwapLittleToHostInt64(x) +#elif defined(sun) || defined(__sun) +# include <sys/byteorder.h> +# define _le64toh(x) LE_64(x) + +#else + +/* See: http://sourceforge.net/p/predef/wiki/Endianness/ */ +# if defined(__FreeBSD__) || defined(__NetBSD__) || defined(OpenBSD) +# include <sys/endian.h> +# else +# include <endian.h> +# endif +# if defined(__BYTE_ORDER) && defined(__LITTLE_ENDIAN) && \ + __BYTE_ORDER == __LITTLE_ENDIAN +# define _le64toh(x) ((uint64_t)(x)) +# else +# if defined(OpenBSD) +# define _le64toh(x) letoh64(x) +# else +# define _le64toh(x) le64toh(x) +# endif +# endif + +#endif |