solaris.h

来自「PostgreSQL7.4.6 for Linux」· C头文件 代码 · 共 62 行

/* $Header: /cvsroot/pgsql/src/include/port/solaris.h,v 1.8 2003/03/10 22:28:21 tgl Exp $ */

#define HAS_TEST_AND_SET
typedef unsigned char slock_t;

/*
 * Sort this out for all operating systems some time.  The __xxx
 * symbols are defined on both GCC and Solaris CC, although GCC
 * doesn't document them.  The __xxx__ symbols are only on GCC.
 */
#if defined(__i386) && !defined(__i386__)
#define __i386__
#endif

#if defined(__sparc) && !defined(__sparc__)
#define __sparc__
#endif

#if defined(__i386__)
#include <sys/isa_defs.h>
#endif

#ifndef			BIG_ENDIAN
#define			BIG_ENDIAN		4321
#endif
#ifndef			LITTLE_ENDIAN
#define			LITTLE_ENDIAN	1234
#endif
#ifndef			PDP_ENDIAN
#define			PDP_ENDIAN		3412
#endif

#ifndef			BYTE_ORDER
#ifdef __sparc__
#define		  BYTE_ORDER	  BIG_ENDIAN
#endif
#ifdef __i386__
#define		 BYTE_ORDER		 LITTLE_ENDIAN
#endif
#endif


#ifndef NAN

#if defined(__GNUC__) && defined(__i386__)

#ifndef __nan_bytes
#define __nan_bytes				 { 0, 0, 0, 0, 0, 0, 0xf8, 0x7f }
#endif

#define NAN \
	(__extension__ ((union { unsigned char __c[8]; double __d; }) \
					{ __nan_bytes }).__d)

#else
/* not GNUC and i386 */

#define NAN (0.0/0.0)
#endif   /* GCC.  */

#endif   /* not NAN */