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update from main archive 970225
1997-02-24 23:05 Wolfram Gloger <wmglo@dent.med.uni-muenchen.de> * malloc/malloc.c (malloc_get_state): New function. Saves global malloc state to an opaque data structure which is dynamically allocated in the heap. * malloc/malloc.c (malloc_set_state): New function. Restore previously obtained state. * malloc/malloc.h: Add declaration of malloc_get_state() and malloc_set_state(). 1997-02-24 23:27 Ulrich Drepper <drepper@cygnus.com> * sysdeps/libm-ieee754/s_cbrtl.c: Shift B1_EXP value to right position. 1997-02-24 17:38 Ulrich Drepper <drepper@cygnus.com> * misc/error.c: Make error and error_at_line weak aliases of __error and __error_at_line respectively. Suggested by David Mosberger-Tang <davidm@AZStarNet.COM>. * sysdeps/unix/sysv/linux/i386/socket.S: Update copyright. 1997-02-22 11:30 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * elf/ldd.bash.in: Run the program directly, not as argument to the dynamic linker, if it contains an interpreter segment. * elf/ldd.sh.in: Likewise. * elf/rtld.c (dl_main): In verify mode check whether the dynamic object contains an interpreter segment and exit with 2 if not. 1997-02-23 01:23 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * Makefile (distribute): Remove nsswitch.h, netgroup.h, mcheck.h and xlocale.h. Make-dist adds them automagically. 1997-02-22 12:25 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * locale/C-time.c (_nl_C_LC_TIME): Add missing entry for time-era-num-entries. 1997-02-06 13:49 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * rellns-sh: No need to check for existance of first parameter. 1997-02-24 15:20 Jonathan T. Agnew <jtagnew@amherst.edu> * glibcbug.in: Don't mention destination on MAIL_AGENT command line to avoid duplicate mail. 1997-02-24 03:51 Ulrich Drepper <drepper@cygnus.com> * Makefile (distribute): Add isomac.c. (tests): Run isomac test. * features.h (__USE_ISOC9X): New macro. * catgets/catgets.c: Don't use global variable `optind'. Instead use result computed by argp_parse. * db/makedb: Likewise. * locale/programs/locale.c: Likewise. * locale/programs/localedef.c: Likewise. * libio/stdio.h: Rewrite. Make it more readable and add comments. * libio/clearerr.c: Remove clearerr_locked alias. * libio/feof.c: Remove feof_locked alias. * libio/ferror.c: Remove feof_locked alias. * libio/fileno.c: Remove fileno_locked alias. * libio/fputc.c: Remove fputc_locked alias. * libio/getc.c: Remove getc_locked alias. * libio/getchar.c: Remove getchar_locked alias. * libio/iofflush.c: Remove fflush_locked alias. * libio/putc.c: Remove putc_locked alias. * libio/putc.c: Remove putchar_locked alias. * stdio-common/printf_fp.c: When number is inifinity print INF or inf depending on case of specifier. Same for NaN where NAN or nan is printed. Specified in ISO C 9X. * misc/sys/cdefs.h (__restrict): Define to empty string for now. * stdio/stdio.h: Add __restrict to prototypes where necessary. * libio/stdio.h: Likewise. * stdlib/stdlib.h: Likewise. * string/string.h: Likewise. * time/time.h: Likewise. * wcsmbs/wchar.h: Likewise. * stdlib/strtod.c: Change to recognize INF, INFINITY, NAN, and NAN(...). * sysdeps/ieee754/huge_val.h: Define HUGE_VALF and HUGE_VALL instead of HUGE_VALf and HUGE_VALL. * stdlib/strtof.c (FLOAT_HUGE_VAL): Use standard name HUGE_VALF instead of HUGE_VALf. * wcsmbs/wcstof.c: Likewise. * stdlib/strtold.c (FLOAT_HUGE_VAL): Use standard name HUGE_VALL instead of HUGE_VALl. * wcsmbs/wcstold.c: Likewise. * sysdeps/posix/gai_strerror.c: Use size_t for counter variable to avoid warning. * wcsmbs/Makefile (routines): Add wcscasecmp and wcsncase. * wcsmbs/wchar.h: Add prototypes for wcscasecmp and wcsncase. * wcsmbs/wcscasecmp.c: New file. * wcsmbs/wcsncase.c: New file. * stdlib/strtol.c: Define wide character quad word functions as wcstoll and wcstoull and normal versions as strtoll and strtoull. * wcsmbs/wchar.h: Add prototypes for wcstoll and wcstoull. * wcsmbs/wcstoq: Renamed to wcstoll.c. * wcsmbs/wcstouq: Renamed to wcstoull.c. * wcsmbs/wcstoll.c: Renamed from wcstoq.c. Make wcstoq a weak alias of wcstoll. * wcsmbs/wcstoull.c: Renamed from wcstouq.c. Make wcstouq a weak alias of wcstoull. * wcsmbs/Makefile (routines): Replace wcstoq and wcstouq by wcstoll and wcstoull respectively. * stdlib/strtoq.c: Rename to strtoll.c. * stdlib/strtouq.c: Rename to strtoull.c. * stdlib/strtoll.c: Renamed from strtoq.c. Make strtoq a weak alias of strtoll. * stdlib/strtoll.c: Renamed from strtouq.c. Make strtouq a weak alias of strtoull. * stdlib/Makefile (routines): Replace strtoq and strtouq by strtoll and strtoull respectively. * stdio-common/vfscanf.c: Don't use __strtoq_internal and __strtouq_internal but instead __strtoll_internal and __strtoull_internal respectively. * stdlib/stdlib.h (strtoq): Use __internal_strtoll in inline version. (strtouq): Similar with __internal_strtoull. * wcsmbs/wchar.h (wcstoq): Use __internal_wcstoll in inline version. (wcstouq): Similar with __internal_wcstoull. 1997-02-23 04:38 Ulrich Drepper <drepper@cygnus.com> * stdlib/strtol.c (STRTOL): It is not illegal to parse a minus sign in the strtouXX functions. The results gets simply negated. * stdio-common/tstscanf.c: Add testcase for above case. * stdlib/tst-strtol.c: Correct tests. * manual/stdio-fp.c: New file. Generate output for example program in stdio.texi. * stdio-common/Makefile (routines): Add printf_fphex. * stdio-common/vfprintf.c: Add handling of %a and %A specifier. * stdio-common/printf_fphex.c: New file. Implement %a and %A specifier. 1997-02-22 03:01 Ulrich Drepper <drepper@cygnus.com> * sysdeps/unix/sysv/linux/timebits.h (CLK_TCK): Don't defined if __STRICT_ANSI__. * math/math.h: Prevent definition of struct exception when using C++. 1997-02-22 01:45 Ulrich Drepper <drepper@cygnus.com> * sysdeps/unix/syscalls.list: Dup takes only one argument. Reported by Greg McGary. 1997-02-21 00:22 Miles Bader <miles@gnu.ai.mit.edu> 1997-02-20 01:28 Miles Bader <miles@gnu.ai.mit.edu> 1997-02-19 13:56 Miles Bader <miles@gnu.ai.mit.edu> 1997-02-18 15:39 Miles Bader <miles@gnu.ai.mit.edu> 1997-02-17 10:58 Miles Bader <miles@gnu.ai.mit.edu> 1997-02-15 10:23 Miles Bader <miles@gnu.ai.mit.edu> (mutex_lock, mutex_unlock, mutex_trylock): Defined in terms of __mutex_*. (mutex_t): Type removed & replaced by new macro. (tsd_key_t): Typedef to int instead of pthread_key_t. (tsd_key_create, tsd_setspecific, tsd_getspecific): New macros. (__pthread_initialize): New macro, work around assumption of pthreads. * sysdeps/mach/hurd/i386/init-first.c (__libc_argv, __libc_argc): __hurd_sigthread_stack_end, __hurd_sigthread_stack_variables, __hurd_threadvar_max, __hurd_threadvar_stack_offset, __hurd_threadvar_stack_mask): Variables removed. 1997-02-14 14:07 Miles Bader <miles@gnu.ai.mit.edu> * hurd/hurd.h (_hurd_pids_changed_stamp, _hurd_pids_changed_sync): 1997-02-24 17:06 Geoffrey Keating <geoffk@discus.anu.edu.au> * sysdeps/unix/sysv/linux/accept.S (NARGS): Describe number of arguments taken, for sysdeps/unix/sysv/linux/powerpc/socket.S. * sysdeps/unix/sysv/linux/bind.S: Likewise. * sysdeps/unix/sysv/linux/connect.S: Likewise. * sysdeps/unix/sysv/linux/getpeername.S: Likewise. * sysdeps/unix/sysv/linux/getsockname.S: Likewise. * sysdeps/unix/sysv/linux/getsockopt.S: Likewise. * sysdeps/unix/sysv/linux/listen.S: Likewise. * sysdeps/unix/sysv/linux/recv.S: Likewise. * sysdeps/unix/sysv/linux/recvfrom.S: Likewise. * sysdeps/unix/sysv/linux/recvmsg.S: Likewise. * sysdeps/unix/sysv/linux/send.S: Likewise. * sysdeps/unix/sysv/linux/sendmsg.S: Likewise. * sysdeps/unix/sysv/linux/sendto.S: Likewise. * sysdeps/unix/sysv/linux/setsockopt.S: Likewise. * sysdeps/unix/sysv/linux/shutdown.S: Likewise. * sysdeps/unix/sysv/linux/socketpair.S: Likewise. 1997-02-15 04:51 Ulrich Drepper <drepper@cygnus.com>
This commit is contained in:
Ulrich Drepper
440
stdio-common/printf_fphex.c
Normal file
440
stdio-common/printf_fphex.c
Normal file
@ -0,0 +1,440 @@
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/* Print floating point number in hexadecimal notation according to
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ISO C 9X.
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Copyright (C) 1997 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
|
||||
published by the Free Software Foundation; either version 2 of the
|
||||
License, or (at your option) any later version.
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||||
|
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The GNU C Library 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
|
||||
Library General Public License for more details.
|
||||
|
||||
You should have received a copy of the GNU Library General Public
|
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License along with the GNU C Library; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#include <ctype.h>
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#include <ieee754.h>
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#include <math.h>
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#include <printf.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include "_itoa.h"
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#include "../locale/localeinfo.h"
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/* #define NDEBUG 1*/ /* Undefine this for debugging assertions. */
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#include <assert.h>
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/* This defines make it possible to use the same code for GNU C library and
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the GNU I/O library. */
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#ifdef USE_IN_LIBIO
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# include <libioP.h>
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# define PUT(f, s, n) _IO_sputn (f, s, n)
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# define PAD(f, c, n) _IO_padn (f, c, n)
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/* We use this file GNU C library and GNU I/O library. So make
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names equal. */
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# undef putc
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# define putc(c, f) _IO_putc_unlocked (c, f)
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# define size_t _IO_size_t
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# define FILE _IO_FILE
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#else /* ! USE_IN_LIBIO */
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# define PUT(f, s, n) fwrite (s, 1, n, f)
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# define PAD(f, c, n) __printf_pad (f, c, n)
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ssize_t __printf_pad __P ((FILE *, char pad, int n)); /* In vfprintf.c. */
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#endif /* USE_IN_LIBIO */
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||||
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/* Macros for doing the actual output. */
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#define outchar(ch) \
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do \
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{ \
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register const int outc = (ch); \
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if (putc (outc, fp) == EOF) \
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return -1; \
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++done; \
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} while (0)
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#define PRINT(ptr, len) \
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do \
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{ \
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int outlen = (len); \
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const char *cp = (ptr); \
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while (outlen-- > 0) \
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outchar (*cp++); \
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} while (0)
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#define PADN(ch, len) \
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do \
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{ \
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if (PAD (fp, ch, len) != len) \
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return -1; \
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done += len; \
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} \
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while (0)
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int
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__printf_fphex (FILE *fp,
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const struct printf_info *info,
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const void *const *args)
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{
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/* The floating-point value to output. */
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union
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{
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union ieee754_double dbl;
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union ieee854_long_double ldbl;
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}
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fpnum;
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/* Locale-dependent representation of decimal point. */
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wchar_t decimal;
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/* "NaN" or "Inf" for the special cases. */
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const char *special = NULL;
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/* Buffer for the generated number string for the mantissa. The
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maximal size for the mantissa is 64 bits. */
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char numbuf[16];
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char *numstr;
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char *numend;
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int negative;
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/* The maximal exponent of two in decimal notation has 5 digits. */
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char expbuf[5];
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char *expstr;
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int expnegative;
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int exponent;
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/* Non-zero is mantissa is zero. */
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int zero_mantissa;
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/* The leading digit before the decimal point. */
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char leading;
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/* Precision. */
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int precision = info->prec;
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/* Width. */
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int width = info->width;
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/* Number of characters written. */
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int done = 0;
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/* Figure out the decimal point character. */
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if (info->extra == 0)
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{
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if (mbtowc (&decimal, _NL_CURRENT (LC_NUMERIC, DECIMAL_POINT),
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strlen (_NL_CURRENT (LC_NUMERIC, DECIMAL_POINT))) <= 0)
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decimal = (wchar_t) *_NL_CURRENT (LC_NUMERIC, DECIMAL_POINT);
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}
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else
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{
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if (mbtowc (&decimal, _NL_CURRENT (LC_MONETARY, MON_DECIMAL_POINT),
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strlen (_NL_CURRENT (LC_MONETARY, MON_DECIMAL_POINT))) <= 0)
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decimal = (wchar_t) *_NL_CURRENT (LC_MONETARY, MON_DECIMAL_POINT);
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}
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/* Give default value. */
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if (decimal == L'\0')
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decimal = L'.';
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/* Fetch the argument value. */
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if (info->is_long_double && sizeof (long double) > sizeof (double))
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{
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fpnum.ldbl.d = *(const long double *) args[0];
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/* Check for special values: not a number or infinity. */
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if (__isnanl (fpnum.ldbl.d))
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{
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special = isupper (info->spec) ? "NAN" : "nan";
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negative = 0;
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}
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else
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{
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if (__isinfl (fpnum.ldbl.d))
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special = isupper (info->spec) ? "INF" : "inf";
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negative = fpnum.ldbl.d < 0;
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}
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}
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else
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{
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fpnum.dbl.d = *(const double *) args[0];
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/* Check for special values: not a number or infinity. */
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if (__isnan (fpnum.dbl.d))
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{
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special = isupper (info->spec) ? "NAN" : "nan";
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negative = 0;
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}
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else
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{
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if (__isinf (fpnum.dbl.d))
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special = isupper (info->spec) ? "INF" : "inf";
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negative = fpnum.dbl.d < 0;
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}
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}
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if (special)
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{
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int width = info->prec > info->width ? info->prec : info->width;
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if (negative || info->showsign || info->space)
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--width;
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width -= 3;
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if (!info->left && width > 0)
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PADN (' ', width);
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if (negative)
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outchar ('-');
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else if (info->showsign)
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outchar ('+');
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else if (info->space)
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outchar (' ');
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PRINT (special, 3);
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if (info->left && width > 0)
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PADN (' ', width);
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return done;
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}
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/* We are handling here only 64 and 80 bit IEEE foating point
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numbers. */
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if (info->is_long_double == 0 || sizeof (double) == sizeof (long double))
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{
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/* We have 52 bits of mantissa plus one implicit digit. Since
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52 bits are representable without rest using hexadecimal
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digits we use only the implicit digits for the number before
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the decimal point. */
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if (sizeof (unsigned long int) > 6)
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{
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unsigned long int num;
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num = (((unsigned long int) fpnum.dbl.ieee.mantissa0) << 32
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| fpnum.dbl.ieee.mantissa1);
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zero_mantissa = num == 0;
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numstr = _itoa_word (num, numbuf + sizeof numbuf, 16,
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info->spec == 'A');
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}
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else
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{
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unsigned long long int num;
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num = (((unsigned long long int) fpnum.dbl.ieee.mantissa0) << 32
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| fpnum.dbl.ieee.mantissa1);
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zero_mantissa = num == 0;
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numstr = _itoa (num, numbuf + sizeof numbuf, 16, info->spec == 'A');
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}
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/* Fill with zeroes. */
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while (numstr > numbuf + (sizeof numbuf - 13)) /* 52 <20> 4 = 13 */
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*--numstr = '0';
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leading = fpnum.dbl.ieee.exponent == 0 ? '0' : '1';
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exponent = fpnum.dbl.ieee.exponent;
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if (exponent != 0 && exponent < IEEE754_DOUBLE_BIAS)
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{
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expnegative = 1;
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exponent = abs (exponent - IEEE754_DOUBLE_BIAS);
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}
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else
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{
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expnegative = 0;
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if (exponent != 0)
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exponent -= IEEE754_DOUBLE_BIAS;
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}
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}
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else
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{
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/* The "strange" 80 bit format on ix86 and m68k has an explicit
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leading digit in the 64 bit mantissa. */
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assert (sizeof (long double) == 12);
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if (sizeof (unsigned long int) > 6)
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{
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unsigned long int num;
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num = (((unsigned long int) fpnum.dbl.ieee.mantissa0) << 32
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| fpnum.dbl.ieee.mantissa1);
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zero_mantissa = num == 0;
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numstr = _itoa_word (num, numbuf + sizeof numbuf, 16,
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info->spec == 'A');
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}
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else
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{
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unsigned long long int num;
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num = (((unsigned long long int) fpnum.ldbl.ieee.mantissa0) << 32
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| fpnum.ldbl.ieee.mantissa1);
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zero_mantissa = num == 0;
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numstr = _itoa (num, numbuf + sizeof numbuf, 16, info->spec == 'A');
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}
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/* We use a full nibble for the leading digit. */
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leading = *numstr++;
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/* Fill with zeroes. */
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while (numstr > numbuf + (sizeof numbuf - 15)) /* 60 <20> 4 = 15 */
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*--numstr = '0';
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/* We have 3 bits from the mantissa in the leading nibble. */
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exponent = fpnum.ldbl.ieee.exponent - 3;
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if (exponent != 0 && exponent < IEEE854_LONG_DOUBLE_BIAS)
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{
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expnegative = 1;
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exponent = abs (exponent - IEEE854_LONG_DOUBLE_BIAS);
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}
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||||
else
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||||
{
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expnegative = 0;
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if (exponent != 0)
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exponent -= IEEE854_LONG_DOUBLE_BIAS;
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||||
}
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||||
}
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||||
|
||||
/* Look for trailing zeroes. */
|
||||
if (! zero_mantissa)
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{
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||||
numend = numbuf + sizeof numbuf;
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||||
while (numend[-1] == '0')
|
||||
--numend;
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||||
|
||||
if (precision == -1)
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||||
precision = numend - numstr;
|
||||
else if (precision < numend - numstr
|
||||
&& (numstr[precision] > 5
|
||||
|| (numstr[precision] == 5
|
||||
&& (precision + 1 < numend - numstr
|
||||
/* Round to even. */
|
||||
|| (precision > 0
|
||||
&& ((numstr[precision - 1] & 1)
|
||||
^ (isdigit (numstr[precision - 1]) == 0)))
|
||||
|| (precision == 0
|
||||
&& ((leading & 1)
|
||||
^ (isdigit (leading) == 0)))))))
|
||||
{
|
||||
/* Round up. */
|
||||
int cnt = precision;
|
||||
while (--cnt >= 0)
|
||||
{
|
||||
char ch = numstr[cnt];
|
||||
/* We assume that the digits and the letters are ordered
|
||||
like in ASCII. This is true for the rest of GNU, too. */
|
||||
if (ch == '9')
|
||||
{
|
||||
numstr[cnt] = info->spec; /* This is tricky,
|
||||
think about it! */
|
||||
break;
|
||||
}
|
||||
else if (tolower (ch) < 'f')
|
||||
{
|
||||
++numstr[cnt];
|
||||
break;
|
||||
}
|
||||
else
|
||||
numstr[cnt] = '0';
|
||||
}
|
||||
if (cnt < 0)
|
||||
{
|
||||
/* The mantissa so far was fff...f Now increment the
|
||||
leading digit. Here it is again possible that we
|
||||
get an overflow. */
|
||||
if (leading == '9')
|
||||
leading = info->spec;
|
||||
else if (tolower (leading) < 'f')
|
||||
++leading;
|
||||
else
|
||||
{
|
||||
leading = 1;
|
||||
if (expnegative)
|
||||
{
|
||||
exponent += 4;
|
||||
if (exponent >= 0)
|
||||
expnegative = 0;
|
||||
}
|
||||
else
|
||||
exponent += 4;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
else
|
||||
numend = numstr;
|
||||
|
||||
/* Now we can compute the exponent string. */
|
||||
expstr = _itoa_word (exponent, expbuf + sizeof expbuf, 10, 0);
|
||||
|
||||
/* Now we have all information to compute the size. */
|
||||
width -= ((negative || info->showsign || info->space)
|
||||
/* Sign. */
|
||||
+ 2 + 1 + 1 + precision + 1 + 1
|
||||
/* 0x h . hhh P ExpoSign. */
|
||||
+ ((expbuf + sizeof expbuf) - expstr));
|
||||
/* Exponent. */
|
||||
|
||||
/* A special case if when the mantissa is zero and the `#' is not
|
||||
given. In this case we must not print the decimal point. */
|
||||
if (zero_mantissa && precision == 0 && !info->alt)
|
||||
++width; /* This nihilates the +1 for the decimal-point
|
||||
character in the following equation. */
|
||||
|
||||
if (!info->left && width > 0)
|
||||
PADN (' ', width);
|
||||
|
||||
if (negative)
|
||||
outchar ('-');
|
||||
else if (info->showsign)
|
||||
outchar ('+');
|
||||
else if (info->space)
|
||||
outchar (' ');
|
||||
|
||||
outchar ('0');
|
||||
outchar (info->spec == 'A' ? 'X' : 'x');
|
||||
outchar (leading);
|
||||
|
||||
if (!zero_mantissa || precision != 0 || info->alt)
|
||||
outchar (decimal);
|
||||
|
||||
if (!zero_mantissa || precision != 0)
|
||||
{
|
||||
PRINT (numstr, MIN (numend - numstr, precision));
|
||||
if (precision > numend - numstr)
|
||||
PADN ('0', precision - (numend - numstr));
|
||||
}
|
||||
|
||||
if (info->left && info->pad == '0' && width > 0)
|
||||
PADN ('0', width);
|
||||
|
||||
outchar (info->spec == 'A' ? 'P' : 'p');
|
||||
|
||||
outchar (expnegative ? '-' : '+');
|
||||
|
||||
PRINT (expstr, (expbuf + sizeof expbuf) - expstr);
|
||||
|
||||
if (info->left && info->pad != '0' && width > 0)
|
||||
PADN (info->pad, width);
|
||||
|
||||
return done;
|
||||
}
|
||||
Reference in New Issue
Block a user