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- /* 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
-
- /* 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
-
- #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
-