File: /usr/include/sys/_endian.h

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       1: /*
       2:  * Copyright (c) 2004, 2006 Apple Computer, Inc. All rights reserved.
       3:  *
       4:  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
       5:  * 
       6:  * This file contains Original Code and/or Modifications of Original Code
       7:  * as defined in and that are subject to the Apple Public Source License
       8:  * Version 2.0 (the 'License'). You may not use this file except in
       9:  * compliance with the License. The rights granted to you under the License
      10:  * may not be used to create, or enable the creation or redistribution of,
      11:  * unlawful or unlicensed copies of an Apple operating system, or to
      12:  * circumvent, violate, or enable the circumvention or violation of, any
      13:  * terms of an Apple operating system software license agreement.
      14:  * 
      15:  * Please obtain a copy of the License at
      16:  * http://www.opensource.apple.com/apsl/ and read it before using this file.
      17:  * 
      18:  * The Original Code and all software distributed under the License are
      19:  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
      20:  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
      21:  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
      22:  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
      23:  * Please see the License for the specific language governing rights and
      24:  * limitations under the License.
      25:  * 
      26:  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
      27:  */
      28: 
      29: /*
      30:  * Copyright (c) 1995 NeXT Computer, Inc. All rights reserved.
      31:  * Copyright (c) 2000-2002 Apple Computer, Inc. All rights reserved.
      32:  *
      33:  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
      34:  * 
      35:  * This file contains Original Code and/or Modifications of Original Code
      36:  * as defined in and that are subject to the Apple Public Source License
      37:  * Version 2.0 (the 'License'). You may not use this file except in
      38:  * compliance with the License. The rights granted to you under the License
      39:  * may not be used to create, or enable the creation or redistribution of,
      40:  * unlawful or unlicensed copies of an Apple operating system, or to
      41:  * circumvent, violate, or enable the circumvention or violation of, any
      42:  * terms of an Apple operating system software license agreement.
      43:  * 
      44:  * Please obtain a copy of the License at
      45:  * http://www.opensource.apple.com/apsl/ and read it before using this file.
      46:  * 
      47:  * The Original Code and all software distributed under the License are
      48:  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
      49:  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
      50:  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
      51:  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
      52:  * Please see the License for the specific language governing rights and
      53:  * limitations under the License.
      54:  * 
      55:  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
      56:  */
      57: /*
      58:  * Copyright (c) 1987, 1991, 1993
      59:  *    The Regents of the University of California.  All rights reserved.
      60:  *
      61:  * Redistribution and use in source and binary forms, with or without
      62:  * modification, are permitted provided that the following conditions
      63:  * are met:
      64:  * 1. Redistributions of source code must retain the above copyright
      65:  *    notice, this list of conditions and the following disclaimer.
      66:  * 2. Redistributions in binary form must reproduce the above copyright
      67:  *    notice, this list of conditions and the following disclaimer in the
      68:  *    documentation and/or other materials provided with the distribution.
      69:  * 3. All advertising materials mentioning features or use of this software
      70:  *    must display the following acknowledgement:
      71:  *    This product includes software developed by the University of
      72:  *    California, Berkeley and its contributors.
      73:  * 4. Neither the name of the University nor the names of its contributors
      74:  *    may be used to endorse or promote products derived from this software
      75:  *    without specific prior written permission.
      76:  *
      77:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
      78:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
      79:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
      80:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
      81:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
      82:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
      83:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
      84:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
      85:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
      86:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
      87:  * SUCH DAMAGE.
      88:  */
      89: 
      90: #ifndef _SYS__ENDIAN_H_
      91: #define    _SYS__ENDIAN_H_
      92: 
      93: #include <sys/cdefs.h>
      94: 
      95: /*
      96:  * Macros for network/external number representation conversion.
      97:  */
      98: 
      99: #if defined(lint)
     100: 
     101: __BEGIN_DECLS
     102: __uint16_t    ntohs(__uint16_t);
     103: __uint16_t    htons(__uint16_t);
     104: __uint32_t    ntohl(__uint32_t);
     105: __uint32_t    htonl(__uint32_t);
     106: __END_DECLS
     107: 
     108: #elif __DARWIN_BYTE_ORDER == __DARWIN_BIG_ENDIAN
     109: 
     110: #define ntohl(x)        ((__uint32_t)(x))
     111: #define ntohs(x)        ((__uint16_t)(x))
     112: #define htonl(x)        ((__uint32_t)(x))
     113: #define htons(x)        ((__uint16_t)(x))
     114: 
     115: #if     defined(KERNEL) || (!defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE))
     116: 
     117: #define ntohll(x)       ((__uint64_t)(x))
     118: #define htonll(x)       ((__uint64_t)(x))
     119: 
     120: #define NTOHL(x)        (x)
     121: #define NTOHS(x)        (x)
     122: #define NTOHLL(x)       (x)
     123: #define HTONL(x)        (x)
     124: #define HTONS(x)        (x)
     125: #define HTONLL(x)       (x)
     126: #endif /* defined(KERNEL) || (!defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)) */
     127: 
     128: #else    /* __DARWIN_BYTE_ORDER == __DARWIN_LITTLE_ENDIAN */
     129: 
     130: #include <libkern/_OSByteOrder.h>
     131: 
     132: #define ntohs(x)    __DARWIN_OSSwapInt16(x)
     133: #define htons(x)    __DARWIN_OSSwapInt16(x)
     134: 
     135: #define ntohl(x)    __DARWIN_OSSwapInt32(x)
     136: #define htonl(x)    __DARWIN_OSSwapInt32(x)
     137: 
     138: #if    defined(KERNEL) || (!defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE))
     139: 
     140: #define ntohll(x)       __DARWIN_OSSwapInt64(x)
     141: #define htonll(x)       __DARWIN_OSSwapInt64(x)
     142: 
     143: #define    NTOHL(x)    (x) = ntohl((__uint32_t)x)
     144: #define    NTOHS(x)    (x) = ntohs((__uint16_t)x)
     145: #define    NTOHLL(x)    (x) = ntohll((__uint64_t)x)
     146: #define    HTONL(x)    (x) = htonl((__uint32_t)x)
     147: #define    HTONS(x)    (x) = htons((__uint16_t)x)
     148: #define    HTONLL(x)    (x) = htonll((__uint64_t)x)
     149: #endif /* defined(KERNEL) || (!defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)) */
     150: #endif /* __DARWIN_BYTE_ORDER */
     151: #endif /* !_SYS__ENDIAN_H_ */
     152: