diff options
Diffstat (limited to 'contrib/gnu-sort/src/system.h')
| -rw-r--r-- | contrib/gnu-sort/src/system.h | 831 |
1 files changed, 0 insertions, 831 deletions
diff --git a/contrib/gnu-sort/src/system.h b/contrib/gnu-sort/src/system.h deleted file mode 100644 index 3497969..0000000 --- a/contrib/gnu-sort/src/system.h +++ /dev/null @@ -1,831 +0,0 @@ -/* system-dependent definitions for fileutils, textutils, and sh-utils packages. - Copyright (C) 1989, 1991-2004 Free Software Foundation, Inc. - - This program is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 2, or (at your option) - any later version. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software Foundation, - Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ - -#include <alloca.h> - -/* Include sys/types.h before this file. */ - -#if 2 <= __GLIBC__ && 2 <= __GLIBC_MINOR__ -# if ! defined _SYS_TYPES_H -you must include <sys/types.h> before including this file -# endif -#endif - -#include <sys/stat.h> - -#if !defined HAVE_MKFIFO -# define mkfifo(path, mode) (mknod ((path), (mode) | S_IFIFO, 0)) -#endif - -#if HAVE_SYS_PARAM_H -# include <sys/param.h> -#endif - -/* <unistd.h> should be included before any preprocessor test - of _POSIX_VERSION. */ -#if HAVE_UNISTD_H -# include <unistd.h> -#endif - -#ifndef STDIN_FILENO -# define STDIN_FILENO 0 -#endif - -#ifndef STDOUT_FILENO -# define STDOUT_FILENO 1 -#endif - -#ifndef STDERR_FILENO -# define STDERR_FILENO 2 -#endif - - -/* limits.h must come before pathmax.h because limits.h on some systems - undefs PATH_MAX, whereas pathmax.h sets PATH_MAX. */ -#include <limits.h> - -#include "pathmax.h" -#include "localedir.h" - -#if TIME_WITH_SYS_TIME -# include <sys/time.h> -# include <time.h> -#else -# if HAVE_SYS_TIME_H -# include <sys/time.h> -# else -# include <time.h> -# endif -#endif - -/* Since major is a function on SVR4, we can't use `ifndef major'. */ -#if MAJOR_IN_MKDEV -# include <sys/mkdev.h> -# define HAVE_MAJOR -#endif -#if MAJOR_IN_SYSMACROS -# include <sys/sysmacros.h> -# define HAVE_MAJOR -#endif -#ifdef major /* Might be defined in sys/types.h. */ -# define HAVE_MAJOR -#endif - -#ifndef HAVE_MAJOR -# define major(dev) (((dev) >> 8) & 0xff) -# define minor(dev) ((dev) & 0xff) -# define makedev(maj, min) (((maj) << 8) | (min)) -#endif -#undef HAVE_MAJOR - -#if ! defined makedev && defined mkdev -# define makedev(maj, min) mkdev (maj, min) -#endif - -#if HAVE_UTIME_H -# include <utime.h> -#endif - -/* Some systems (even some that do have <utime.h>) don't declare this - structure anywhere. */ -#ifndef HAVE_STRUCT_UTIMBUF -struct utimbuf -{ - long actime; - long modtime; -}; -#endif - -/* Don't use bcopy! Use memmove if source and destination may overlap, - memcpy otherwise. */ - -#include <string.h> -#if ! HAVE_DECL_MEMRCHR -void *memrchr (const void *, int, size_t); -#endif - -#include <errno.h> - -/* Some systems don't define the following symbols. */ -#ifndef ENOSYS -# define ENOSYS (-1) -#endif -#ifndef EISDIR -# define EISDIR (-1) -#endif - -#include <stdbool.h> - -#define getopt system_getopt -#include <stdlib.h> -#undef getopt - -/* The following test is to work around the gross typo in - systems like Sony NEWS-OS Release 4.0C, whereby EXIT_FAILURE - is defined to 0, not 1. */ -#if !EXIT_FAILURE -# undef EXIT_FAILURE -# define EXIT_FAILURE 1 -#endif - -#ifndef EXIT_SUCCESS -# define EXIT_SUCCESS 0 -#endif - -/* Exit statuses for programs like 'env' that exec other programs. - EXIT_FAILURE might not be 1, so use EXIT_FAIL in such programs. */ -enum -{ - EXIT_FAIL = 1, - EXIT_CANNOT_INVOKE = 126, - EXIT_ENOENT = 127 -}; - -#include "exitfail.h" - -/* Set exit_failure to STATUS if that's not the default already. */ -static inline void -initialize_exit_failure (int status) -{ - if (status != EXIT_FAILURE) - exit_failure = status; -} - -#if HAVE_FCNTL_H -# include <fcntl.h> -#else -# include <sys/file.h> -#endif - -#if !defined SEEK_SET -# define SEEK_SET 0 -# define SEEK_CUR 1 -# define SEEK_END 2 -#endif -#ifndef F_OK -# define F_OK 0 -# define X_OK 1 -# define W_OK 2 -# define R_OK 4 -#endif - -/* For systems that distinguish between text and binary I/O. - O_BINARY is usually declared in fcntl.h */ -#if !defined O_BINARY && defined _O_BINARY - /* For MSC-compatible compilers. */ -# define O_BINARY _O_BINARY -# define O_TEXT _O_TEXT -#endif - -#if !defined O_DIRECT -# define O_DIRECT 0 -#endif - -#if !defined O_DSYNC -# define O_DSYNC 0 -#endif - -#if !defined O_NDELAY -# define O_NDELAY 0 -#endif - -#if !defined O_NONBLOCK -# define O_NONBLOCK O_NDELAY -#endif - -#if !defined O_NOCTTY -# define O_NOCTTY 0 -#endif - -#if !defined O_NOFOLLOW -# define O_NOFOLLOW 0 -#endif - -#if !defined O_RSYNC -# define O_RSYNC 0 -#endif - -#if !defined O_SYNC -# define O_SYNC 0 -#endif - -#ifdef __BEOS__ - /* BeOS 5 has O_BINARY and O_TEXT, but they have no effect. */ -# undef O_BINARY -# undef O_TEXT -#endif - -#if O_BINARY -# ifndef __DJGPP__ -# define setmode _setmode -# define fileno(_fp) _fileno (_fp) -# endif /* not DJGPP */ -# define SET_MODE(_f, _m) setmode (_f, _m) -# define SET_BINARY(_f) do {if (!isatty(_f)) setmode (_f, O_BINARY);} while (0) -# define SET_BINARY2(_f1, _f2) \ - do { \ - if (!isatty (_f1)) \ - { \ - setmode (_f1, O_BINARY); \ - if (!isatty (_f2)) \ - setmode (_f2, O_BINARY); \ - } \ - } while(0) -#else -# define SET_MODE(_f, _m) (void)0 -# define SET_BINARY(f) (void)0 -# define SET_BINARY2(f1,f2) (void)0 -# ifndef O_BINARY -# define O_BINARY 0 -# endif -# define O_TEXT 0 -#endif /* O_BINARY */ - -#if HAVE_DIRENT_H -# include <dirent.h> -# define NLENGTH(direct) (strlen((direct)->d_name)) -#else /* not HAVE_DIRENT_H */ -# define dirent direct -# define NLENGTH(direct) ((direct)->d_namlen) -# if HAVE_SYS_NDIR_H -# include <sys/ndir.h> -# endif /* HAVE_SYS_NDIR_H */ -# if HAVE_SYS_DIR_H -# include <sys/dir.h> -# endif /* HAVE_SYS_DIR_H */ -# if HAVE_NDIR_H -# include <ndir.h> -# endif /* HAVE_NDIR_H */ -#endif /* HAVE_DIRENT_H */ - -#if CLOSEDIR_VOID -/* Fake a return value. */ -# define CLOSEDIR(d) (closedir (d), 0) -#else -# define CLOSEDIR(d) closedir (d) -#endif - -/* Get or fake the disk device blocksize. - Usually defined by sys/param.h (if at all). */ -#if !defined DEV_BSIZE && defined BSIZE -# define DEV_BSIZE BSIZE -#endif -#if !defined DEV_BSIZE && defined BBSIZE /* SGI */ -# define DEV_BSIZE BBSIZE -#endif -#ifndef DEV_BSIZE -# define DEV_BSIZE 4096 -#endif - -/* Extract or fake data from a `struct stat'. - ST_BLKSIZE: Preferred I/O blocksize for the file, in bytes. - ST_NBLOCKS: Number of blocks in the file, including indirect blocks. - ST_NBLOCKSIZE: Size of blocks used when calculating ST_NBLOCKS. */ -#ifndef HAVE_STRUCT_STAT_ST_BLOCKS -# define ST_BLKSIZE(statbuf) DEV_BSIZE -# if defined _POSIX_SOURCE || !defined BSIZE /* fileblocks.c uses BSIZE. */ -# define ST_NBLOCKS(statbuf) \ - ((statbuf).st_size / ST_NBLOCKSIZE + ((statbuf).st_size % ST_NBLOCKSIZE != 0)) -# else /* !_POSIX_SOURCE && BSIZE */ -# define ST_NBLOCKS(statbuf) \ - (S_ISREG ((statbuf).st_mode) \ - || S_ISDIR ((statbuf).st_mode) \ - ? st_blocks ((statbuf).st_size) : 0) -# endif /* !_POSIX_SOURCE && BSIZE */ -#else /* HAVE_STRUCT_STAT_ST_BLOCKS */ -/* Some systems, like Sequents, return st_blksize of 0 on pipes. - Also, when running `rsh hpux11-system cat any-file', cat would - determine that the output stream had an st_blksize of 2147421096. - So here we arbitrarily limit the `optimal' block size to 4MB. - If anyone knows of a system for which the legitimate value for - st_blksize can exceed 4MB, please report it as a bug in this code. */ -# define ST_BLKSIZE(statbuf) ((0 < (statbuf).st_blksize \ - && (statbuf).st_blksize <= (1 << 22)) /* 4MB */ \ - ? (statbuf).st_blksize : DEV_BSIZE) -# if defined hpux || defined __hpux__ || defined __hpux -/* HP-UX counts st_blocks in 1024-byte units. - This loses when mixing HP-UX and BSD file systems with NFS. */ -# define ST_NBLOCKSIZE 1024 -# else /* !hpux */ -# if defined _AIX && defined _I386 -/* AIX PS/2 counts st_blocks in 4K units. */ -# define ST_NBLOCKSIZE (4 * 1024) -# else /* not AIX PS/2 */ -# if defined _CRAY -# define ST_NBLOCKS(statbuf) \ - (S_ISREG ((statbuf).st_mode) \ - || S_ISDIR ((statbuf).st_mode) \ - ? (statbuf).st_blocks * ST_BLKSIZE(statbuf)/ST_NBLOCKSIZE : 0) -# endif /* _CRAY */ -# endif /* not AIX PS/2 */ -# endif /* !hpux */ -#endif /* HAVE_STRUCT_STAT_ST_BLOCKS */ - -#ifndef ST_NBLOCKS -# define ST_NBLOCKS(statbuf) ((statbuf).st_blocks) -#endif - -#ifndef ST_NBLOCKSIZE -# define ST_NBLOCKSIZE 512 -#endif - -/* Redirection and wildcarding when done by the utility itself. - Generally a noop, but used in particular for native VMS. */ -#ifndef initialize_main -# define initialize_main(ac, av) -#endif - -#include "stat-macros.h" - -#include "timespec.h" - -#ifndef RETSIGTYPE -# define RETSIGTYPE void -#endif - -#ifdef __DJGPP__ - /* We need the declaration of setmode. */ -# include <io.h> - /* We need the declaration of __djgpp_set_ctrl_c. */ -# include <sys/exceptn.h> -#endif - -#if HAVE_INTTYPES_H -# include <inttypes.h> -#endif -#if HAVE_STDINT_H -# include <stdint.h> -#endif - -#if ULONG_MAX < ULLONG_MAX -# define LONGEST_MODIFIER "ll" -#else -# define LONGEST_MODIFIER "l" -#endif -#if PRI_MACROS_BROKEN -# undef PRIdMAX -# undef PRIoMAX -# undef PRIuMAX -# undef PRIxMAX -#endif -#ifndef PRIdMAX -# define PRIdMAX LONGEST_MODIFIER "d" -#endif -#ifndef PRIoMAX -# define PRIoMAX LONGEST_MODIFIER "o" -#endif -#ifndef PRIuMAX -# define PRIuMAX LONGEST_MODIFIER "u" -#endif -#ifndef PRIxMAX -# define PRIxMAX LONGEST_MODIFIER "x" -#endif - -#include <ctype.h> - -/* Jim Meyering writes: - - "... Some ctype macros are valid only for character codes that - isascii says are ASCII (SGI's IRIX-4.0.5 is one such system --when - using /bin/cc or gcc but without giving an ansi option). So, all - ctype uses should be through macros like ISPRINT... If - STDC_HEADERS is defined, then autoconf has verified that the ctype - macros don't need to be guarded with references to isascii. ... - Defining isascii to 1 should let any compiler worth its salt - eliminate the && through constant folding." - - Bruno Haible adds: - - "... Furthermore, isupper(c) etc. have an undefined result if c is - outside the range -1 <= c <= 255. One is tempted to write isupper(c) - with c being of type `char', but this is wrong if c is an 8-bit - character >= 128 which gets sign-extended to a negative value. - The macro ISUPPER protects against this as well." */ - -#if STDC_HEADERS || (!defined (isascii) && !HAVE_ISASCII) -# define IN_CTYPE_DOMAIN(c) 1 -#else -# define IN_CTYPE_DOMAIN(c) isascii(c) -#endif - -#ifdef isblank -# define ISBLANK(c) (IN_CTYPE_DOMAIN (c) && isblank (c)) -#else -# define ISBLANK(c) ((c) == ' ' || (c) == '\t') -#endif -#ifdef isgraph -# define ISGRAPH(c) (IN_CTYPE_DOMAIN (c) && isgraph (c)) -#else -# define ISGRAPH(c) (IN_CTYPE_DOMAIN (c) && isprint (c) && !isspace (c)) -#endif - -/* This is defined in <sys/euc.h> on at least Solaris2.6 systems. */ -#undef ISPRINT - -#define ISPRINT(c) (IN_CTYPE_DOMAIN (c) && isprint (c)) -#define ISALNUM(c) (IN_CTYPE_DOMAIN (c) && isalnum (c)) -#define ISALPHA(c) (IN_CTYPE_DOMAIN (c) && isalpha (c)) -#define ISCNTRL(c) (IN_CTYPE_DOMAIN (c) && iscntrl (c)) -#define ISLOWER(c) (IN_CTYPE_DOMAIN (c) && islower (c)) -#define ISPUNCT(c) (IN_CTYPE_DOMAIN (c) && ispunct (c)) -#define ISSPACE(c) (IN_CTYPE_DOMAIN (c) && isspace (c)) -#define ISUPPER(c) (IN_CTYPE_DOMAIN (c) && isupper (c)) -#define ISXDIGIT(c) (IN_CTYPE_DOMAIN (c) && isxdigit (c)) -#define ISDIGIT_LOCALE(c) (IN_CTYPE_DOMAIN (c) && isdigit (c)) - -#if STDC_HEADERS -# define TOLOWER(Ch) tolower (Ch) -# define TOUPPER(Ch) toupper (Ch) -#else -# define TOLOWER(Ch) (ISUPPER (Ch) ? tolower (Ch) : (Ch)) -# define TOUPPER(Ch) (ISLOWER (Ch) ? toupper (Ch) : (Ch)) -#endif - -/* ISDIGIT differs from ISDIGIT_LOCALE, as follows: - - Its arg may be any int or unsigned int; it need not be an unsigned char. - - It's guaranteed to evaluate its argument exactly once. - - It's typically faster. - POSIX says that only '0' through '9' are digits. Prefer ISDIGIT to - ISDIGIT_LOCALE unless it's important to use the locale's definition - of `digit' even when the host does not conform to POSIX. */ -#define ISDIGIT(c) ((unsigned int) (c) - '0' <= 9) - -/* Convert a possibly-signed character to an unsigned character. This is - a bit safer than casting to unsigned char, since it catches some type - errors that the cast doesn't. */ -static inline unsigned char to_uchar (char ch) { return ch; } - -/* Take care of NLS matters. */ - -#if HAVE_LOCALE_H -# include <locale.h> -#else -# define setlocale(Category, Locale) /* empty */ -#endif - -#include "gettext.h" -#if ! ENABLE_NLS -# undef textdomain -# define textdomain(Domainname) /* empty */ -# undef bindtextdomain -# define bindtextdomain(Domainname, Dirname) /* empty */ -#endif - -#define _(msgid) gettext (msgid) -#define N_(msgid) msgid - -#ifndef HAVE_SETLOCALE -# define HAVE_SETLOCALE 0 -#endif - -#define STREQ(a, b) (strcmp ((a), (b)) == 0) - -#if !HAVE_DECL_FREE -void free (); -#endif - -#if !HAVE_DECL_MALLOC -char *malloc (); -#endif - -#if !HAVE_DECL_MEMCHR -char *memchr (); -#endif - -#if !HAVE_DECL_REALLOC -char *realloc (); -#endif - -#if !HAVE_DECL_STPCPY -# ifndef stpcpy -char *stpcpy (); -# endif -#endif - -#if !HAVE_DECL_STRNDUP -char *strndup (); -#endif - -#if !HAVE_DECL_STRSTR -char *strstr (); -#endif - -#if !HAVE_DECL_GETENV -char *getenv (); -#endif - -#if !HAVE_DECL_LSEEK -off_t lseek (); -#endif - -/* This is needed on some AIX systems. */ -#if !HAVE_DECL_STRTOUL -unsigned long strtoul (); -#endif - -#if !HAVE_DECL_GETLOGIN -char *getlogin (); -#endif - -#if !HAVE_DECL_TTYNAME -char *ttyname (); -#endif - -#if !HAVE_DECL_GETEUID -uid_t geteuid (); -#endif - -#if !HAVE_DECL_GETPWUID -struct passwd *getpwuid (); -#endif - -#if !HAVE_DECL_GETGRGID -struct group *getgrgid (); -#endif - -#if !HAVE_DECL_GETUID -uid_t getuid (); -#endif - -#include "xalloc.h" - -#if ! defined HAVE_MEMPCPY && ! defined mempcpy -/* Be CAREFUL that there are no side effects in N. */ -# define mempcpy(D, S, N) ((void *) ((char *) memcpy (D, S, N) + (N))) -#endif - -/* Include automatically-generated macros for unlocked I/O. */ -#include "unlocked-io.h" - -#define SAME_INODE(Stat_buf_1, Stat_buf_2) \ - ((Stat_buf_1).st_ino == (Stat_buf_2).st_ino \ - && (Stat_buf_1).st_dev == (Stat_buf_2).st_dev) - -#define DOT_OR_DOTDOT(Basename) \ - (Basename[0] == '.' && (Basename[1] == '\0' \ - || (Basename[1] == '.' && Basename[2] == '\0'))) - -/* A wrapper for readdir so that callers don't see entries for `.' or `..'. */ -static inline struct dirent const * -readdir_ignoring_dot_and_dotdot (DIR *dirp) -{ - while (1) - { - struct dirent const *dp = readdir (dirp); - if (dp == NULL || ! DOT_OR_DOTDOT (dp->d_name)) - return dp; - } -} - -#if SETVBUF_REVERSED -# define SETVBUF(Stream, Buffer, Type, Size) \ - setvbuf (Stream, Type, Buffer, Size) -#else -# define SETVBUF(Stream, Buffer, Type, Size) \ - setvbuf (Stream, Buffer, Type, Size) -#endif - -/* Factor out some of the common --help and --version processing code. */ - -/* These enum values cannot possibly conflict with the option values - ordinarily used by commands, including CHAR_MAX + 1, etc. Avoid - CHAR_MIN - 1, as it may equal -1, the getopt end-of-options value. */ -enum -{ - GETOPT_HELP_CHAR = (CHAR_MIN - 2), - GETOPT_VERSION_CHAR = (CHAR_MIN - 3) -}; - -#define GETOPT_HELP_OPTION_DECL \ - "help", no_argument, 0, GETOPT_HELP_CHAR -#define GETOPT_VERSION_OPTION_DECL \ - "version", no_argument, 0, GETOPT_VERSION_CHAR - -#define case_GETOPT_HELP_CHAR \ - case GETOPT_HELP_CHAR: \ - usage (EXIT_SUCCESS); \ - break; - -#define HELP_OPTION_DESCRIPTION \ - _(" --help display this help and exit\n") -#define VERSION_OPTION_DESCRIPTION \ - _(" --version output version information and exit\n") - -#include "closeout.h" -#include "version-etc.h" - -#define case_GETOPT_VERSION_CHAR(Program_name, Authors) \ - case GETOPT_VERSION_CHAR: \ - version_etc (stdout, Program_name, GNU_PACKAGE, VERSION, Authors, \ - (char *) NULL); \ - exit (EXIT_SUCCESS); \ - break; - -#ifndef MAX -# define MAX(a, b) ((a) > (b) ? (a) : (b)) -#endif - -#ifndef MIN -# define MIN(a,b) (((a) < (b)) ? (a) : (b)) -#endif - -/* The extra casts work around common compiler bugs. */ -#define TYPE_SIGNED(t) (! ((t) 0 < (t) -1)) -/* The outer cast is needed to work around a bug in Cray C 5.0.3.0. - It is necessary at least when t == time_t. */ -#define TYPE_MINIMUM(t) ((t) (TYPE_SIGNED (t) \ - ? ~ (t) 0 << (sizeof (t) * CHAR_BIT - 1) : (t) 0)) -#define TYPE_MAXIMUM(t) ((t) (~ (t) 0 - TYPE_MINIMUM (t))) - -/* Upper bound on the string length of an integer converted to string. - 302 / 1000 is ceil (log10 (2.0)). Subtract 1 for the sign bit; - add 1 for integer division truncation; add 1 more for a minus sign. */ -#define INT_STRLEN_BOUND(t) ((sizeof (t) * CHAR_BIT - 1) * 302 / 1000 + 2) - -#ifndef CHAR_MIN -# define CHAR_MIN TYPE_MINIMUM (char) -#endif - -#ifndef CHAR_MAX -# define CHAR_MAX TYPE_MAXIMUM (char) -#endif - -#ifndef SCHAR_MIN -# define SCHAR_MIN (-1 - SCHAR_MAX) -#endif - -#ifndef SCHAR_MAX -# define SCHAR_MAX (CHAR_MAX == UCHAR_MAX ? CHAR_MAX / 2 : CHAR_MAX) -#endif - -#ifndef UCHAR_MAX -# define UCHAR_MAX TYPE_MAXIMUM (unsigned char) -#endif - -#ifndef SHRT_MIN -# define SHRT_MIN TYPE_MINIMUM (short int) -#endif - -#ifndef SHRT_MAX -# define SHRT_MAX TYPE_MAXIMUM (short int) -#endif - -#ifndef INT_MAX -# define INT_MAX TYPE_MAXIMUM (int) -#endif - -#ifndef INT_MIN -# define INT_MIN TYPE_MINIMUM (int) -#endif - -#ifndef INTMAX_MAX -# define INTMAX_MAX TYPE_MAXIMUM (intmax_t) -#endif - -#ifndef INTMAX_MIN -# define INTMAX_MIN TYPE_MINIMUM (intmax_t) -#endif - -#ifndef UINT_MAX -# define UINT_MAX TYPE_MAXIMUM (unsigned int) -#endif - -#ifndef LONG_MAX -# define LONG_MAX TYPE_MAXIMUM (long int) -#endif - -#ifndef ULONG_MAX -# define ULONG_MAX TYPE_MAXIMUM (unsigned long int) -#endif - -#ifndef SIZE_MAX -# define SIZE_MAX TYPE_MAXIMUM (size_t) -#endif - -#ifndef SSIZE_MAX -# define SSIZE_MAX TYPE_MAXIMUM (ssize_t) -#endif - -#ifndef UINTMAX_MAX -# define UINTMAX_MAX TYPE_MAXIMUM (uintmax_t) -#endif - -#ifndef OFF_T_MIN -# define OFF_T_MIN TYPE_MINIMUM (off_t) -#endif - -#ifndef OFF_T_MAX -# define OFF_T_MAX TYPE_MAXIMUM (off_t) -#endif - -#ifndef UID_T_MAX -# define UID_T_MAX TYPE_MAXIMUM (uid_t) -#endif - -#ifndef GID_T_MAX -# define GID_T_MAX TYPE_MAXIMUM (gid_t) -#endif - -#ifndef PID_T_MAX -# define PID_T_MAX TYPE_MAXIMUM (pid_t) -#endif - -/* Use this to suppress gcc's `...may be used before initialized' warnings. */ -#ifdef lint -# define IF_LINT(Code) Code -#else -# define IF_LINT(Code) /* empty */ -#endif - -#ifndef __attribute__ -# if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 8) || __STRICT_ANSI__ -# define __attribute__(x) -# endif -#endif - -#ifndef ATTRIBUTE_NORETURN -# define ATTRIBUTE_NORETURN __attribute__ ((__noreturn__)) -#endif - -#ifndef ATTRIBUTE_UNUSED -# define ATTRIBUTE_UNUSED __attribute__ ((__unused__)) -#endif - -#if defined strdupa -# define ASSIGN_STRDUPA(DEST, S) \ - do { DEST = strdupa (S); } while (0) -#else -# define ASSIGN_STRDUPA(DEST, S) \ - do \ - { \ - const char *s_ = (S); \ - size_t len_ = strlen (s_) + 1; \ - char *tmp_dest_ = alloca (len_); \ - DEST = memcpy (tmp_dest_, (s_), len_); \ - } \ - while (0) -#endif - -#ifndef EOVERFLOW -# define EOVERFLOW EINVAL -#endif - -#if ! HAVE_FSEEKO && ! defined fseeko -# define fseeko(s, o, w) ((o) == (long int) (o) \ - ? fseek (s, o, w) \ - : (errno = EOVERFLOW, -1)) -#endif - -/* Compute the greatest common divisor of U and V using Euclid's - algorithm. U and V must be nonzero. */ - -static inline size_t -gcd (size_t u, size_t v) -{ - do - { - size_t t = u % v; - u = v; - v = t; - } - while (v); - - return u; -} - -/* Compute the least common multiple of U and V. U and V must be - nonzero. There is no overflow checking, so callers should not - specify outlandish sizes. */ - -static inline size_t -lcm (size_t u, size_t v) -{ - return u * (v / gcd (u, v)); -} - -/* Return PTR, aligned upward to the next multiple of ALIGNMENT. - ALIGNMENT must be nonzero. The caller must arrange for ((char *) - PTR) through ((char *) PTR + ALIGNMENT - 1) to be addressable - locations. */ - -static inline void * -ptr_align (void *ptr, size_t alignment) -{ - char *p0 = ptr; - char *p1 = p0 + alignment - 1; - return p1 - (size_t) p1 % alignment; -} |
