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1997-11-11 21:30 Ulrich Drepper <drepper@cygnus.com> * include/sys/stat.h: Define stat, fstat, lstat and *64 variants as macros so the the library compiles correctly even without optimization. * io/fstat.c: Undef fstat. * io/fstat64.c: Undef fstat64 * io/lstat.c: Undef lstat. * io/lstat64.c: Undef lstat64 * io/stat.c: Undef stat. * io/stat64.c: Undef stat64 * io/fts.c: Include <include/sys/stat.h> to get macro definitions. * io/ftw.c: Likewise. * io/getdirname.c: Likewise. * Makefile (install): Run test-installation.pl if possible. * db2/Makefile: Update from db-2.3.12. * db2/db.h: Likewise. * db2/db_int.h: Likewise. * db2/btree/bt_cursor.c: Likewise. * db2/btree/bt_delete.c: Likewise. * db2/btree/bt_open.c: Likewise. * db2/btree/bt_put.c: Likewise. * db2/btree/bt_rec.c: Likewise. * db2/btree/bt_recno.c: Likewise. * db2/btree/bt_search.c: Likewise. * db2/btree/bt_split.c: Likewise. * db2/btree/bt_stat.c: Likewise. * db2/btree/btree.src: Likewise. * db2/btree/btree_auto.c: Likewise. * db2/btree/bt_cursor.c: Likewise. * db2/btree/bt_delete.c: Likewise. * db2/btree/bt_open.c: Likewise. * db2/btree/bt_put.c: Likewise. * db2/btree/bt_rec.c: Likewise. * db2/btree/bt_recno.c: Likewise. * db2/btree/bt_search.c: Likewise. * db2/btree/bt_split.c: Likewise. * db2/btree/bt_stat.c: Likewise. * db2/btree/btree.src: Likewise. * db2/btree/btree_auto.c: Likewise. * db2/common/db_appinit.c: Likewise. * db2/common/db_apprec.c: Likewise. * db2/common/db_byteorder.c: Likewise. * db2/common/db_region.c: Likewise. * db2/db/db.c: Likewise * db2/db/db.src: Likewise * db2/db/db_auto.c: Likewise * db2/db/db_dispatch.c: Likewise * db2/db/db_dup.c: Likewise * db2/db/db_overflow.c: Likewise * db2/db/db_pr.c: Likewise * db2/db/db_rec.c: Likewise * db2/db/db_ret.c: Likewise * db2/db/db_thread.c: Likewise * db2/db185/db185.c: Likewise. * db2/hash/hash.c: Likewise. * db2/hash/hash.src: Likewise. * db2/hash/hash_auto.c: Likewise. * db2/hash/hash_dup.c: Likewise. * db2/hash/hash_page.c: Likewise. * db2/hash/hash_rec.c: Likewise. * db2/include/btree_auto.h: Likewise. * db2/include/btree_ext.h: Likewise. * db2/include/clib_ext.h: Likewise. * db2/include/common_ext.h: Likewise. * db2/include/db.h.src: Likewise. * db2/include/db_am.h: Likewise. * db2/include/db_auto.h: Likewise. * db2/include/db_cxx.h: Likewise. * db2/include/db_ext.h: Likewise. * db2/include/db_int.h.src: Likewise. * db2/include/hash.h: Likewise. * db2/include/hash_auto.h: Likewise. * db2/include/hash_ext.h: Likewise. * db2/include/lock.h: Likewise. * db2/include/lock_ext.h: Likewise. * db2/include/log.h: Likewise. * db2/include/log_ext.h: Likewise. * db2/include/mp.h: Likewise. * db2/include/mp_ext.h: Likewise. * db2/include/mutex_ext.h: Likewise. * db2/include/os_ext.h: Likewise. * db2/include/os_func.h: Likewise. * db2/include/txn.h: Likewise. * db2/include/txn_ext.h: Likewise. * db2/lock/lock.c: Likewise. * db2/lock/lock_deadlock.c: Likewise. * db2/log/log.c: Likewise. * db2/log/log_archive.c: Likewise. * db2/log/log_auto.c: Likewise. * db2/log/log_findckp.c: Likewise. * db2/log/log_get.c: Likewise. * db2/log/log_put.c: Likewise. * db2/log/log_rec.c: Likewise. * db2/log/log_register.c: Likewise. * db2/mp/mp_bh.c: Likewise. * db2/mp/mp_fget.c: Likewise. * db2/mp/mp_fopen.c: Likewise. * db2/mp/mp_fput.c: Likewise. * db2/mp/mp_fset.c: Likewise. * db2/mp/mp_open.c: Likewise. * db2/mp/mp_pr.c: Likewise. * db2/mp/mp_region.c: Likewise. * db2/mp/mp_sync.c: Likewise. * db2/mutex/mutex.c: Likewise. * db2/os/os_abs.c: Likewise. * db2/os/os_dir.c: Likewise. * db2/os/os_fid.c: Likewise. * db2/os/os_fsync.c: Likewise. * db2/os/os_func.c: Likewise. * db2/os/os_map.c: Likewise. * db2/os/os_oflags.c: Likewise. * db2/os/os_open.c: Likewise. * db2/os/os_rpath.c: Likewise. * db2/os/os_rw.c: Likewise. * db2/os/os_seek.c: Likewise. * db2/os/os_sleep.c: Likewise. * db2/os/os_stat.c: Likewise. * db2/os/os_unlink.c: Likewise. * db2/progs/db_deadlock/db_deadlock.c: Likewise. * db2/progs/db_dump/db_dump.c: Likewise. * db2/progs/db_load/db_load.c: Likewise. * db2/progs/db_recover/db_recover.c: Likewise. * db2/progs/db_stat/db_stat.c: Likewise. * db2/txn/txn.c: Likewise. * db2/txn/txn_auto.c: Likewise. * db2/txn/txn_rec.c: Likewise. * db2/os/db_os_abs.c: Removed. * db2/os/db_os_dir.c: Removed. * db2/os/db_os_fid.c: Removed. * db2/os/db_os_lseek.c: Removed. * db2/os/db_os_mmap.c: Removed. * db2/os/db_os_open.c: Removed. * db2/os/db_os_rw.c: Removed. * db2/os/db_os_sleep.c: Removed. * db2/os/db_os_stat.c: Removed. * db2/os/db_os_unlink.c: Removed. * libio/stdio.h (fopen): Add __restrict to parameters. * manual/process.texi (system): Describe behaviour for NULL argument. * stdio-common/printf-parse.h: Parse hh modifier. * stdio-common/vfprintf.c: Handle hh modifier. * stdio-common/vfscanf.c: Likewise. * manual/stdio.texi: Describe hh modifier for scanf/printf. * math/complex.h: Don't define _Imaginary_I, but instead _Complex_I. gcc does no yet know the `imaginary' keyword. * math/test-math.c: Add little test for know gcc bug. * math/tgmath.h: Make complex versions of log10() only available if __USE_GNU. * stdlib/test-canon.c: Fix typo. * sysdeps/generic/setenv.c: Avoid compilation warnings. Reported by Jim Meyering. * sysdeps/generic/bits/errno.h: EILSEQ is an ISO C error number. * sysdeps/mach/hurd/bits/errno.h: Likewise. * sysdeps/standalone/bits/errno.h: Likewise. * sysdeps/unix/sysv/linux/bits/errno.h: Likewise. * sysdeps/i386/i586/memcpy.S: New file. * sysdeps/i386/i586/mempcpy.S: New file. * sysdeps/i386/i586/memset.S: Fix typo. * sysdeps/posix/getcwd.c: Define HAVE_MEMPCPY for _LIBC. Add casts. * sysdeps/posix/system.c: Add comment to explain code. * sysdeps/wordsize-32/inttypes.h: Include <stddef.h> for wchar_t. Define PTRDIFF_{MIN,MAX}, SIG_ATOMIC_{MIN,MAX}, SIZE_MAX, WCHAR_{MIN,MAX}, WINT_{MIN,MAX}. Define wcstoimax, wcstoumax. * sysdeps/wordsize-64/inttypes.h: Likewise. * wcsmbs/wchar.h: Define WCHAR_{MIN,MAX} if not already defined. Declare __wcsto{l,ul,ll,ull}_internal only if not already done. * time/Makefile (routines): Add strfxtime. * time/strftime.c: Implement %F and %f format. * time/strfxtime.c: New file. * time/time.h: Define new types and symbols from ISO C 9X. * time/mktime.c: Little comment correction. 1997-11-10 Andreas Jaeger <aj@arthur.rhein-neckar.de> * sysdeps/libm-ieee754/s_sincosl.c: Fix typo. * sysdeps/libm-ieee754/s_tanl.c: Fix typo. * sysdeps/libm-ieee754/s_floorl.c: Correct typos. * sysdeps/libm-ieee754/e_remainderl.c: Replace EXTRACT_LDOUBLE_WORDS by GET_LDOUBLE_WORDS. * sysdeps/libm-ieee754/e_atan2l.c: Replace EXTRACT_LDOUBLE_WORDS by GET_LDOUBLE_WORDS. * sysdeps/libm-ieee754/s_scalbnl.c: Replace ";" by "," for correct variable declaration. * sysdeps/libm-ieee754/s_scalblnl.c: Likewise. * sysdeps/libm-ieee754/s_lrint.c (__lrint): Correct function. * math/libm-test.c (sqrt_test): Add test for sqrt (0.25). (asin_test): Add more test. 1997-11-10 23:34 Ulrich Drepper <drepper@cygnus.com> * sysdeps/libm-ieee754/e_asin.c: Add braces to make code clearer and to not confuse the poor compiler. * sysdeps/libm-ieee754/e_asinf.c: Likewise. Reported by vertex@cagent.com. 1997-11-09 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * elf/dl-lookup.c (do_lookup): Don't accept the base version if we require a specific one. * libio/oldfreopen.c: Bind old symbols to version GLIBC_2.0. * libio/oldiofopen.c: Likewise. * libio/oldstdfiles.c: Likewise. * libc.map: Export them. 1997-11-10 07:40 H.J. Lu <hjl@gnu.ai.mit.edu> * stdlib/exit.c (exit): Handle recursive calls to exit (). 1997-11-09 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * sysdeps/m68k/fpu/s_llrint.c: Fixed to take double argument instead of long double. * sysdeps/m68k/fpu/s_llrintf.c: New file. * sysdeps/m68k/fpu/s_llrintl.c: New file. * sysdeps/libm-ieee754/s_llrint.c: Make compilable and fix overflow condition. * sysdeps/libm-ieee754/s_llrintf.c: Fix overflow condition. * sysdeps/libm-ieee754/s_llrintl.c: Likewise. * sysdeps/libm-ieee754/s_llround.c: Likewise. * sysdeps/libm-ieee754/s_llroundf.c: Likewise. * sysdeps/libm-ieee754/s_llroundl.c: Likewise. * sysdeps/libm-ieee754/s_lrint.c: Likewise. * sysdeps/libm-ieee754/s_lrintf.c: Likewise. * sysdeps/libm-ieee754/s_lrintl.c: Likewise. * sysdeps/libm-ieee754/s_lround.c: Likewise. * sysdeps/libm-ieee754/s_lroundf.c: Likewise. * sysdeps/libm-ieee754/s_lroundl.c: Likewise. * math/libm-test.c: Test all three variants of lrint and llrint. Fix typos in lround and llround tests. Add tests for boundary cases for lrint and llround. 1997-11-08 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * manual/arith.texi: Misc doc fixes. * manual/ctype.texi: Likewise. * manual/pattern.texi: Likewise. * manual/terminal.texi: Likewise. 1997-11-08 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * sysdeps/unix/sysv/linux/xstatconv.c: Use struct assignment instead of memcpy to let the compiler use whatever it regards as optimal. * sysdeps/unix/sysv/linux/alpha/xstatconv.c: Likewise. 1997-11-08 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * sysdeps/unix/sysv/linux/Makefile (sysdep_headers) [$(subdir)=misc]: Add sys/prctl.h. * sysdeps/unix/sysv/linux/Dist: Distribute it. 1997-11-08 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * io/ftwtest-sh: Don't use the unknown which command, instead try pwd as /bin/pwd and /usr/bin/pwd. 1997-11-08 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * manual/maint.texi (Tools for Installation): Don't recommend broken version 3.76.1 of make. (Porting): Fix wording. 1997-11-06 06:13 H.J. Lu <hjl@gnu.ai.mit.edu> * config.make.in (build-pic-default): New, defined with pic_default. * configure.in (pic_default): New, set to yes if PIC is default. * Makeconfig (CPPFLAGS-.o, CPPFLAGS-.op, CPPFLAGS-.og, CPPFLAGS-.ob): Add -DPIC if $(build-pic-default) is yes. 1997-11-09 18:15 Ulrich Drepper <drepper@cygnus.com> * Makerules (libc.so): Fix typo. * csu/Makefile (CFLAGS-initfini.s): Correctly fix moving function definition. Patch by Zack Weinberg <zack@rabi.phys.columbia.edu>. * stdlib/strtod.c: Handle numbers like 0.0e10000 correctly which produce ±0.0. Reported by Joe Keane <jgk@jgk.org>. * sysdeps/libm-ieee754/s_ceill.c: Fix typos. * sysdeps/libm-ieee754/s_llrint.c: Correct code, it never worked. 1997-11-06 07:00 H.J. Lu <hjl@gnu.ai.mit.edu> * sysdeps/unix/sysv/i386/i686/time.S: Removed. 1997-11-08 14:07 Thorsten Kukuk <kukuk@vt.uni-paderborn.de> * nis/libnsl.map: Add __do_niscall2 for nis_cachemgr. * nis/nis_call.c: Set UDP resend timeout correct. * nis/nss_compat/compat-grp.c: Rewritten to make it faster. * nis/nss_compat/compat-pwd.c: Likewise. * nis/nss_compat/compat-spwd.c: Likewise. * nis/ypclnt.c: Fix UDP resend timeout, fix yp_bind/do_ypcall interaction. * inet/protocols/routed.h: Include sys/socket.h. * inet/protocols/talkd.h: Likewise. * inet/protocols/timed.h: Include rpc/types.h. * sunrpc/rpc/pmap_clnt.h: Include rpc/clnt.h. 1997-11-06 01:39 Ulrich Drepper <drepper@cygnus.com> * Makerules (libc.so): Add missing closing brace. 1997-11-05 Brendan Kehoe <brendan@lisa.cygnus.com> * libio.h (__P): Name its arg `p' instead of `params'. This was added solely to work around problems with the definition of __P in the Solaris math.h header.
251 lines
7.8 KiB
Plaintext
251 lines
7.8 KiB
Plaintext
@node Character Handling, String and Array Utilities, Memory Allocation, Top
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@chapter Character Handling
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Programs that work with characters and strings often need to classify a
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character---is it alphabetic, is it a digit, is it whitespace, and so
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on---and perform case conversion operations on characters. The
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functions in the header file @file{ctype.h} are provided for this
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purpose.
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@pindex ctype.h
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Since the choice of locale and character set can alter the
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classifications of particular character codes, all of these functions
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are affected by the current locale. (More precisely, they are affected
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by the locale currently selected for character classification---the
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@code{LC_CTYPE} category; see @ref{Locale Categories}.)
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@menu
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* Classification of Characters:: Testing whether characters are
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letters, digits, punctuation, etc.
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* Case Conversion:: Case mapping, and the like.
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@end menu
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@node Classification of Characters, Case Conversion, , Character Handling
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@section Classification of Characters
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@cindex character testing
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@cindex classification of characters
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@cindex predicates on characters
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@cindex character predicates
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This section explains the library functions for classifying characters.
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For example, @code{isalpha} is the function to test for an alphabetic
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character. It takes one argument, the character to test, and returns a
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nonzero integer if the character is alphabetic, and zero otherwise. You
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would use it like this:
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@smallexample
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if (isalpha (c))
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printf ("The character `%c' is alphabetic.\n", c);
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@end smallexample
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Each of the functions in this section tests for membership in a
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particular class of characters; each has a name starting with @samp{is}.
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Each of them takes one argument, which is a character to test, and
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returns an @code{int} which is treated as a boolean value. The
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character argument is passed as an @code{int}, and it may be the
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constant value @code{EOF} instead of a real character.
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The attributes of any given character can vary between locales.
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@xref{Locales}, for more information on locales.@refill
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These functions are declared in the header file @file{ctype.h}.
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@pindex ctype.h
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@cindex lower-case character
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@comment ctype.h
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@comment ISO
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@deftypefun int islower (int @var{c})
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Returns true if @var{c} is a lower-case letter.
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@end deftypefun
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@cindex upper-case character
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@comment ctype.h
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@comment ISO
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@deftypefun int isupper (int @var{c})
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Returns true if @var{c} is an upper-case letter.
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@end deftypefun
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@cindex alphabetic character
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@comment ctype.h
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@comment ISO
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@deftypefun int isalpha (int @var{c})
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Returns true if @var{c} is an alphabetic character (a letter). If
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@code{islower} or @code{isupper} is true of a character, then
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@code{isalpha} is also true.
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In some locales, there may be additional characters for which
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@code{isalpha} is true---letters which are neither upper case nor lower
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case. But in the standard @code{"C"} locale, there are no such
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additional characters.
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@end deftypefun
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@cindex digit character
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@cindex decimal digit character
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@comment ctype.h
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@comment ISO
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@deftypefun int isdigit (int @var{c})
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Returns true if @var{c} is a decimal digit (@samp{0} through @samp{9}).
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@end deftypefun
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@cindex alphanumeric character
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@comment ctype.h
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@comment ISO
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@deftypefun int isalnum (int @var{c})
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Returns true if @var{c} is an alphanumeric character (a letter or
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number); in other words, if either @code{isalpha} or @code{isdigit} is
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true of a character, then @code{isalnum} is also true.
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@end deftypefun
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@cindex hexadecimal digit character
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@comment ctype.h
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@comment ISO
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@deftypefun int isxdigit (int @var{c})
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Returns true if @var{c} is a hexadecimal digit.
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Hexadecimal digits include the normal decimal digits @samp{0} through
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@samp{9} and the letters @samp{A} through @samp{F} and
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@samp{a} through @samp{f}.
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@end deftypefun
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@cindex punctuation character
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@comment ctype.h
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@comment ISO
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@deftypefun int ispunct (int @var{c})
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Returns true if @var{c} is a punctuation character.
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This means any printing character that is not alphanumeric or a space
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character.
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@end deftypefun
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@cindex whitespace character
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@comment ctype.h
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@comment ISO
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@deftypefun int isspace (int @var{c})
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Returns true if @var{c} is a @dfn{whitespace} character. In the standard
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@code{"C"} locale, @code{isspace} returns true for only the standard
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whitespace characters:
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@table @code
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@item ' '
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space
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@item '\f'
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formfeed
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@item '\n'
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newline
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@item '\r'
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carriage return
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@item '\t'
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horizontal tab
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@item '\v'
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vertical tab
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@end table
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@end deftypefun
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@cindex blank character
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@comment ctype.h
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@comment GNU
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@deftypefun int isblank (int @var{c})
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Returns true if @var{c} is a blank character; that is, a space or a tab.
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This function is a GNU extension.
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@end deftypefun
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@cindex graphic character
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@comment ctype.h
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@comment ISO
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@deftypefun int isgraph (int @var{c})
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Returns true if @var{c} is a graphic character; that is, a character
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that has a glyph associated with it. The whitespace characters are not
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considered graphic.
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@end deftypefun
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@cindex printing character
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@comment ctype.h
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@comment ISO
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@deftypefun int isprint (int @var{c})
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Returns true if @var{c} is a printing character. Printing characters
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include all the graphic characters, plus the space (@samp{ }) character.
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@end deftypefun
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@cindex control character
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@comment ctype.h
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@comment ISO
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@deftypefun int iscntrl (int @var{c})
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Returns true if @var{c} is a control character (that is, a character that
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is not a printing character).
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@end deftypefun
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@cindex ASCII character
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@comment ctype.h
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@comment SVID, BSD
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@deftypefun int isascii (int @var{c})
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Returns true if @var{c} is a 7-bit @code{unsigned char} value that fits
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into the US/UK ASCII character set. This function is a BSD extension
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and is also an SVID extension.
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@end deftypefun
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@node Case Conversion, , Classification of Characters, Character Handling
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@section Case Conversion
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@cindex character case conversion
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@cindex case conversion of characters
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@cindex converting case of characters
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This section explains the library functions for performing conversions
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such as case mappings on characters. For example, @code{toupper}
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converts any character to upper case if possible. If the character
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can't be converted, @code{toupper} returns it unchanged.
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These functions take one argument of type @code{int}, which is the
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character to convert, and return the converted character as an
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@code{int}. If the conversion is not applicable to the argument given,
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the argument is returned unchanged.
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@strong{Compatibility Note:} In pre-@w{ISO C} dialects, instead of
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returning the argument unchanged, these functions may fail when the
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argument is not suitable for the conversion. Thus for portability, you
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may need to write @code{islower(c) ? toupper(c) : c} rather than just
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@code{toupper(c)}.
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These functions are declared in the header file @file{ctype.h}.
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@pindex ctype.h
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@comment ctype.h
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@comment ISO
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@deftypefun int tolower (int @var{c})
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If @var{c} is an upper-case letter, @code{tolower} returns the corresponding
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lower-case letter. If @var{c} is not an upper-case letter,
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@var{c} is returned unchanged.
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|
@end deftypefun
|
|
|
|
@comment ctype.h
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|
@comment ISO
|
|
@deftypefun int toupper (int @var{c})
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|
If @var{c} is a lower-case letter, @code{tolower} returns the corresponding
|
|
upper-case letter. Otherwise @var{c} is returned unchanged.
|
|
@end deftypefun
|
|
|
|
@comment ctype.h
|
|
@comment SVID, BSD
|
|
@deftypefun int toascii (int @var{c})
|
|
This function converts @var{c} to a 7-bit @code{unsigned char} value
|
|
that fits into the US/UK ASCII character set, by clearing the high-order
|
|
bits. This function is a BSD extension and is also an SVID extension.
|
|
@end deftypefun
|
|
|
|
@comment ctype.h
|
|
@comment SVID
|
|
@deftypefun int _tolower (int @var{c})
|
|
This is identical to @code{tolower}, and is provided for compatibility
|
|
with the SVID. @xref{SVID}.@refill
|
|
@end deftypefun
|
|
|
|
@comment ctype.h
|
|
@comment SVID
|
|
@deftypefun int _toupper (int @var{c})
|
|
This is identical to @code{toupper}, and is provided for compatibility
|
|
with the SVID.
|
|
@end deftypefun
|