152 lines
3.6 KiB
Plaintext
152 lines
3.6 KiB
Plaintext
/* EINA - EFL data type library
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* Copyright (C) 2013 Cedric Bail
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library;
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* if not, see <http://www.gnu.org/licenses/>.
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*/
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/*
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* This code has been partially inspired by :
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* - http://create.stephan-brumme.com/crc32/
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*/
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#ifndef EINA_INLINE_CPU_X_
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#define EINA_INLINE_CPU_X_
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#ifdef __has_builtin
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# define EINA_HAS_BUILTIN(x) __has_builtin(x)
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#elif (defined(__GNUC__) && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 8)))
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# define EINA_HAS_BUILTIN(x) 1
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#else
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# define EINA_HAS_BUILTIN(x) 0 // Compatibility for the rest of the world
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#endif
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#ifdef EINA_HAVE_BYTESWAP_H
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# include <byteswap.h>
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#endif
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static inline unsigned short
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eina_swap16(unsigned short x)
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{
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#if EINA_HAS_BUILTIN(__builtin_bswap16)
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return __builtin_bswap16(x);
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#elif defined _MSC_VER /* Windows. Apparently in <stdlib.h>. */
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return _byteswap_ushort(x);
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#elif defined EINA_HAVE_BYTESWAP_H
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return bswap_16(x);
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#else
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return (((x & 0xff00) >> 8) |
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((x & 0x00ff) << 8));
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#endif
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}
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static inline unsigned int
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eina_swap32(unsigned int x)
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{
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#if EINA_HAS_BUILTIN(__builtin_bswap32)
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return __builtin_bswap32(x);
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#elif defined _MSC_VER /* Windows. Apparently in <stdlib.h>. */
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return _byteswap_ulong(x);
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#elif defined EINA_HAVE_BYTESWAP_H
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return bswap_32(x);
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#else
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return (x >> 24) |
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((x >> 8) & 0x0000FF00) |
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((x << 8) & 0x00FF0000) |
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(x << 24);
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#endif
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}
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static inline unsigned long long
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eina_swap64(unsigned long long x)
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{
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#if EINA_HAS_BUILTIN(__builtin_bswap64)
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return __builtin_bswap64(x);
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#elif defined _MSC_VER /* Windows. Apparently in <stdlib.h>. */
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return _byteswap_uint64(x);
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#elif defined EINA_HAVE_BYTESWAP_H
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return bswap_64(x);
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#else
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return (((x & 0xff00000000000000ull) >> 56) |
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((x & 0x00ff000000000000ull) >> 40) |
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((x & 0x0000ff0000000000ull) >> 24) |
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((x & 0x000000ff00000000ull) >> 8) |
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((x & 0x00000000ff000000ull) << 8) |
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((x & 0x0000000000ff0000ull) << 24) |
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((x & 0x000000000000ff00ull) << 40) |
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((x & 0x00000000000000ffull) << 56));
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#endif
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}
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static inline unsigned short
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eina_htons(unsigned short host)
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{
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#ifdef EINA_HAVE_WORDS_BIGENDIAN
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return host;
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#else
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return eina_swap16(host);
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#endif
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}
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static inline unsigned int
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eina_htonl(unsigned int host)
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{
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#ifdef EINA_HAVE_WORDS_BIGENDIAN
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return host;
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#else
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return eina_swap32(host);
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#endif
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}
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static inline unsigned long long
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eina_htonll(unsigned long long host)
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{
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#ifdef EINA_HAVE_WORDS_BIGENDIAN
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return host;
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#else
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return eina_swap64(host);
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#endif
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}
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static inline unsigned short
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eina_ntohs(unsigned short net)
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{
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#ifdef EINA_HAVE_WORDS_BIGENDIAN
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return net;
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#else
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return eina_swap16(net);
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#endif
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}
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static inline unsigned int
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eina_ntohl(unsigned int net)
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{
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#ifdef EINA_HAVE_WORDS_BIGENDIAN
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return net;
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#else
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return eina_swap32(net);
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#endif
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}
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static inline unsigned long long
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eina_ntohll(unsigned long long net)
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{
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#ifdef EINA_HAVE_WORDS_BIGENDIAN
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return net;
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#else
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return eina_swap64(net);
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#endif
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}
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#endif
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