82 lines
2.5 KiB
C
82 lines
2.5 KiB
C
/* sys/param.h
|
|
|
|
Copyright 2001, 2003 Red Hat, Inc.
|
|
|
|
This software is a copyrighted work licensed under the terms of the
|
|
Cygwin license. Please consult the file "CYGWIN_LICENSE" for
|
|
details. */
|
|
|
|
#ifndef _SYS_PARAM_H
|
|
#define _SYS_PARAM_H
|
|
|
|
#include <sys/types.h>
|
|
/* Linux includes limits.h, but this is not universally done. */
|
|
#include <limits.h>
|
|
|
|
/* Max number of open files. The Posix version is OPEN_MAX. */
|
|
/* Number of fds is virtually unlimited in cygwin, but we must provide
|
|
some reasonable value for Posix conformance */
|
|
#define NOFILE 8192
|
|
|
|
/* Max number of groups; must keep in sync with NGROUPS_MAX in limits.h */
|
|
#define NGROUPS 16
|
|
|
|
/* Ticks/second for system calls such as times() */
|
|
/* FIXME: is this the appropriate value? */
|
|
#define HZ 1000
|
|
|
|
/* Max hostname size that can be dealt with */
|
|
/* FIXME: is this the appropriate value? */
|
|
#define MAXHOSTNAMELEN 64
|
|
|
|
/* This is defined to be the same as MAX_PATH which is used internally.
|
|
The Posix version is PATH_MAX. */
|
|
#define MAXPATHLEN (260 - 1 /*NUL*/)
|
|
|
|
/* This is the number of bytes per block given in the st_blocks stat member.
|
|
It should be in sync with S_BLKSIZE in sys/stat.h. S_BLKSIZE is the
|
|
BSD variant of this constant. */
|
|
#define DEV_BSIZE 1024
|
|
|
|
#if 0 /* defined in endian.h */
|
|
/* Some autoconf'd packages check for endianness. When cross-building we
|
|
can't run programs on the target. Fortunately, autoconf supports the
|
|
definition of byte order in sys/param.h (that's us!).
|
|
The values here are the same as used in gdb/defs.h (are the more
|
|
appropriate values?). */
|
|
#define BIG_ENDIAN 4321
|
|
#define LITTLE_ENDIAN 1234
|
|
|
|
/* All known win32 systems are little endian. */
|
|
#define BYTE_ORDER LITTLE_ENDIAN
|
|
#endif
|
|
|
|
#ifndef NULL
|
|
#define NULL 0L
|
|
#endif
|
|
|
|
#ifndef NBBY
|
|
#define NBBY 8
|
|
#endif
|
|
|
|
/* Bit map related macros. */
|
|
#define setbit(a,i) ((a)[(i)/NBBY] |= 1<<((i)%NBBY))
|
|
#define clrbit(a,i) ((a)[(i)/NBBY] &= ~(1<<((i)%NBBY)))
|
|
#define isset(a,i) ((a)[(i)/NBBY] & (1<<((i)%NBBY)))
|
|
#define isclr(a,i) (((a)[(i)/NBBY] & (1<<((i)%NBBY))) == 0)
|
|
|
|
/* Macros for counting and rounding. */
|
|
#ifndef howmany
|
|
#define howmany(x, y) (((x)+((y)-1))/(y))
|
|
#endif
|
|
#define rounddown(x, y) (((x)/(y))*(y))
|
|
#define roundup(x, y) ((((x)+((y)-1))/(y))*(y)) /* to any y */
|
|
#define roundup2(x, y) (((x)+((y)-1))&(~((y)-1))) /* if y is powers of two */
|
|
#define powerof2(x) ((((x)-1)&(x))==0)
|
|
|
|
/* Macros for min/max. */
|
|
#define MIN(a,b) (((a)<(b))?(a):(b))
|
|
#define MAX(a,b) (((a)>(b))?(a):(b))
|
|
|
|
#endif
|