79 lines
1.8 KiB
C++
79 lines
1.8 KiB
C++
// src/endian.hh
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// This file is part of libpbe; see http://decimail.org
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// (C) 2006 Philip Endecott
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// This program is free software; you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation; either version 2 of the License, or
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// any later version.
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//
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// This program 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
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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#ifndef libpbe_endian_hh
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#define libpbe_endian_hh
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#include <arpa/inet.h>
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#ifdef __GLIBC__
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#include <endian.h>
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#define PBE_BYTE_ORDER __BYTE_ORDER
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#define PBE_BIG_ENDIAN __BIG_ENDIAN
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#define PBE_LITTLE_ENDIAN __LITTLE_ENDIAN
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#elif defined(__FreeBSD__)
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#include <machine/endian.h>
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#define PBE_BYTE_ORDER _BYTE_ORDER
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#define PBE_BIG_ENDIAN _BIG_ENDIAN
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#define PBE_LITTLE_ENDIAN _LITTLE_ENDIAN
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#endif
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namespace pbe {
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inline uint32_t swap_end_32(uint32_t data)
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{
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uint32_t r = data>>24;
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r |= (data>>8)&0x0000ff00;
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r |= (data<<8)&0x00ff0000;
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r |= data<<24;
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return r;
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}
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inline uint64_t swap_end_64(uint64_t data)
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{
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uint64_t a = swap_end_32(data>>32);
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uint64_t b = swap_end_32(data&0xffffffff);
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return a | b<<32;
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}
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inline uint64_t hton64(uint64_t i) {
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#if PBE_BYTE_ORDER == PBE_BIG_ENDIAN
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return i;
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#else
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return swap_end_64(i);
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#endif
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}
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inline uint64_t ntoh64(uint64_t i) {
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#if PBE_BYTE_ORDER == PBE_BIG_ENDIAN
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return i;
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#else
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return swap_end_64(i);
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#endif
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}
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};
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#endif
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