1997-03-23 01:54:07 +00:00
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/* Return quiet nan.
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2016-01-04 16:05:18 +00:00
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Copyright (C) 1997-2016 Free Software Foundation, Inc.
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1997-03-23 01:54:07 +00:00
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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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2001-07-06 04:58:11 +00:00
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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1997-03-23 01:54:07 +00:00
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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2001-07-06 04:58:11 +00:00
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Lesser General Public License for more details.
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1997-03-23 01:54:07 +00:00
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2001-07-06 04:58:11 +00:00
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You should have received a copy of the GNU Lesser General Public
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2012-02-09 23:18:22 +00:00
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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1997-03-23 01:54:07 +00:00
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#include <math.h>
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1997-04-05 01:26:47 +00:00
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#include <stdio.h>
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1997-04-02 14:47:34 +00:00
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#include <stdlib.h>
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#include <string.h>
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#include <ieee754.h>
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1997-03-23 01:54:07 +00:00
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2011-10-22 11:49:49 +00:00
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#undef __nan
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1997-03-23 01:54:07 +00:00
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double
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Update.
1997-03-25 02:15 Ulrich Drepper <drepper@cygnus.com>
* gmon/gmon.c: Optimize a bit by using more sets of records to
write in a single writev call.
* math/math.h: Add definitions of macros __MATHCALLX and __MATHDECLX.
* math/mathcalls.h: Use __MATHCALLX for fabs, infnan, copysign,
nan, isnan, nextafter, trunc, __fpclassify and signbit to mark as
`const'.
Use __MATHDECLX for isinf and finite.
* sysdeps/generic/setenv.c [_LIBC]: Define __clearenv and make
clearenv a weak alias.
Implement complex exponential function.
* sysdeps/libm-ieee754/s_cexp.c: New file.
* sysdeps/libm-ieee754/s_cexpf.c: New file.
* sysdeps/libm-ieee754/s_cexpl.c: New file.
* sysdeps/libm-ieee754/s_nan.c: Define function as __nan and make
nan a weak alias.
* sysdeps/libm-ieee754/s_nanf.c: Likewise for nanf.
* sysdeps/libm-ieee754/s_nanl.c: Likewise for nanl.
* sysdeps/unix/sysv/linux/iovec.h: Don't use kernel header because
of type clashes. Add all definitions here.
* sysdeps/unix/sysv/linux/shmat.c: Likewise. Correct types according
to XPG4.2.
* sysdeps/unix/sysv/linux/shmdt.c: Likewise.
* sysdeps/unix/sysv/linux/msgrcv.c: Likewise.
* sysvipc/sys/shm.h (shmat, shmdt): Correct types.
* sysdeps/unix/sysv/linux/sys/kd.h: Define _LINUX_TYPES_H to avoid
use of kernel types.
1997-03-25 00:00 Ulrich Drepper <drepper@cygnus.com>
* sysdeps/unix/sysv/linux/netinet/ip.h (struct ip_timestamp):
Correct typos. Reported by a sun <asun@zoology.washington.edu>.
1997-03-20 21:58 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* sysdeps/libm-ieee754/s_asinhl.c: Fix sign of result.
1997-03-20 16:20 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* sysdeps/libm-ieee754/e_atan2l.c: Fix typo.
1997-03-20 14:23 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* sysdeps/m68k/fpu/__math.h (__logb, logb): Don't define.
* sysdeps/m68k/fpu/s_logb.c: Removed.
* sysdeps/m68k/fpu/s_logbf.c: Removed.
* sysdeps/m68k/fpu/s_logbl.c: Removed.
* sysdeps/m68k/fpu/__math.h (__ieee754_atan2, __ieee754_pow):
Don't define here.
* sysdeps/m68k/fpu/e_atan2.c: Rewritten.
* sysdeps/m68k/fpu/e_pow.c: Likewise.
* sysdeps/m68k/fpu/e_atan2f.c: Based on e_atan2.c.
* sysdeps/m68k/fpu/e_atan2l.c: Likewise.
* sysdeps/m68k/fpu/e_powf.c: Based on e_pow.c.
* sysdeps/m68k/fpu/e_powl.c: Likewise.
* sysdeps/m68k/fpu/s_log2.c: New file.
* sysdeps/m68k/fpu/s_log2f.c: New file.
* sysdeps/m68k/fpu/s_log2l.c: New file.
* sysdeps/m68k/fpu/s_exp2.c: New file.
* sysdeps/m68k/fpu/s_exp2f.c: New file.
* sysdeps/m68k/fpu/s_exp2l.c: New file.
1997-03-20 14:46 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* Makeconfig (all): Make sure this is always the default goal.
1997-03-20 11:09 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* math/libm-test.c: Increase epsilon in many places. Fix many
typos. Allow optinal argument also for short option.
1997-03-20 11:09 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* math/Makefile ($(objpfx)$(tests)): Link against libm.
1997-03-24 23:14 Ulrich Drepper <drepper@cygnus.com>
* sysdeps/libm-ieee754/s_fpclassifyl.c: Correct recognition of
denormalized numbers.
* sysdeps/i386/huge_val.h: Remove references to byte order macros.
Don't include <endian.h>.
1997-03-19 15:18 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* sysdeps/m68k/huge_val.h: Remove references to byte order macros.
Don't include <endian.h>.
1997-03-24 23:09 Ulrich Drepper <drepper@cygnus.com>
* inet/rcmd.c (iruserok): Use access instead of euidaccess.
1997-03-15 18:08 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* math/cmathcalls.h: Remove whitespace before function name in use
of __MATHDECL macro, to make it compilable with a traditional
preprocessor.
1997-03-24 15:31 Ulrich Drepper <drepper@cygnus.com>
* configure.in: Use AC_PROG_CC instead of AC_PROG_TOOL to find
compiler.
1997-03-24 02:34 Ulrich Drepper <drepper@cygnus.com>
* sysdeps/libm-ieee754/s_finitel.c (__finitel): Shift return value
by 31 positions to get 0/1 result.
Patch by Joe Keane <jgk@jgk.org>.
1997-03-23 12:15 H.J. Lu <hjl@gnu.ai.mit.edu>
* posix/getopt.c (__getopt_nonoption_flags): Make it extern
to prevent from ld linking in getopt.o even if there is another
incompatible one.
* posix/getopt_init.c (__getopt_nonoption_flags): Remove extern.
1997-03-23 23:30 Thorsten Kukuk <kukuk@vt.uni-paderborn.de>
* nis/nis_call.c (__do_niscall): Print message if cold start file
does not exist.
* nis/nis_file.c: Don't print error messages.
* nis/nis_local_name.c (nis_local_host): Fix pointer errors.
* nis/rpcsvc/ypclnt.h: Fix copyright and prototypes.
* nis/rpcsvc/nis.h: Likewise.
* nis/ypclnt.c: Fix prototypes.
1997-03-24 01:36 Ulrich Drepper <drepper@cygnus.com>
* sysdeps/libm-i387/e_scalb.S: Pop additional result before
returning.
* sysdeps/libm-i387/e_scalbf.S: Likewise.
* sysdeps/libm-i387/e_scalbl.S: Likewise.
Reported by Andreas Jaeger <aj@arthur.pfalz.de>.
* elf/rtld.c (dl_main): Set main_map->l_opencount to 1 also if
dynamic linker was called implicitly by the kernel.
Reported by Eric Youngdale <eric@andante.jic.com>.
* math/Makefile (CFLAGS-test-float.c, CFLAGS-test-double.c,
CFLAGS-test-longdouble.c): New variables. Set to -fno-inline to
prevent clever optimizations which corrupt the tests.
1997-03-23 21:33 Andreas Jaeger <aj@arthur.pfalz.de>
* math/libm-test.c (scalb_test): New function.
(sqrt_test): New function.
(scalbn_test): New function.
(ilogb_test): New function.
(main): Added calls for new test functions.
(ldexp_test): Add another test for ldexp(x,0).
1997-03-23 12:35 Andreas Jaeger <aj@arthur.pfalz.de>
* math/libm-test.c (remquo_test): Correct messages so that they
match the tests.
(copysign_test): Likewise.
1997-03-23 16:28 Ulrich Drepper <drepper@cygnus.com>
* stdio-common/Makefile (routines): Add printf_size.
* stdio-common/printf.h: Add declarations for printf_size and
printf_size_info.
* stdio-common/printf-parse.h (__printf_arginfo_table): Correct
declaration.
(parse_one_spec): Test whether __printf_function_table is not NULL
before using registered handlers and don't test
__printf_arginfo_table. Update nargs also when handler is
registered.
* stdio-common/vfprintf.c (vfprintf): Count number of specifiers
processed in fast loop.
* stdio-common/printf_size: New file.
1997-03-22 04:53 Ulgmon_out_readrich Drepper <drepper@cygnus.com>
1997-03-25 01:45:04 +00:00
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__nan (const char *tagp)
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1997-03-23 01:54:07 +00:00
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{
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Fix nan functions handling of payload strings (bug 16961, bug 16962).
The nan, nanf and nanl functions handle payload strings by doing e.g.:
if (tagp[0] != '\0')
{
char buf[6 + strlen (tagp)];
sprintf (buf, "NAN(%s)", tagp);
return strtod (buf, NULL);
}
This is an unbounded stack allocation based on the length of the
argument. Furthermore, if the argument starts with an n-char-sequence
followed by ')', that n-char-sequence is wrongly treated as
significant for determining the payload of the resulting NaN, when ISO
C says the call should be equivalent to strtod ("NAN", NULL), without
being affected by that initial n-char-sequence. This patch fixes both
those problems by using the __strtod_nan etc. functions recently
factored out of strtod etc. for that purpose, with those functions
being exported from libc at version GLIBC_PRIVATE.
Tested for x86_64, x86, mips64 and powerpc.
[BZ #16961]
[BZ #16962]
* math/s_nan.c (__nan): Use __strtod_nan instead of constructing a
string on the stack for strtod.
* math/s_nanf.c (__nanf): Use __strtof_nan instead of constructing
a string on the stack for strtof.
* math/s_nanl.c (__nanl): Use __strtold_nan instead of
constructing a string on the stack for strtold.
* stdlib/Versions (libc): Add __strtof_nan, __strtod_nan and
__strtold_nan to GLIBC_PRIVATE.
* math/test-nan-overflow.c: New file.
* math/test-nan-payload.c: Likewise.
* math/Makefile (tests): Add test-nan-overflow and
test-nan-payload.
2015-12-04 20:36:28 +00:00
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return __strtod_nan (tagp, NULL, 0);
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1997-03-23 01:54:07 +00:00
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}
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Update.
1997-03-25 02:15 Ulrich Drepper <drepper@cygnus.com>
* gmon/gmon.c: Optimize a bit by using more sets of records to
write in a single writev call.
* math/math.h: Add definitions of macros __MATHCALLX and __MATHDECLX.
* math/mathcalls.h: Use __MATHCALLX for fabs, infnan, copysign,
nan, isnan, nextafter, trunc, __fpclassify and signbit to mark as
`const'.
Use __MATHDECLX for isinf and finite.
* sysdeps/generic/setenv.c [_LIBC]: Define __clearenv and make
clearenv a weak alias.
Implement complex exponential function.
* sysdeps/libm-ieee754/s_cexp.c: New file.
* sysdeps/libm-ieee754/s_cexpf.c: New file.
* sysdeps/libm-ieee754/s_cexpl.c: New file.
* sysdeps/libm-ieee754/s_nan.c: Define function as __nan and make
nan a weak alias.
* sysdeps/libm-ieee754/s_nanf.c: Likewise for nanf.
* sysdeps/libm-ieee754/s_nanl.c: Likewise for nanl.
* sysdeps/unix/sysv/linux/iovec.h: Don't use kernel header because
of type clashes. Add all definitions here.
* sysdeps/unix/sysv/linux/shmat.c: Likewise. Correct types according
to XPG4.2.
* sysdeps/unix/sysv/linux/shmdt.c: Likewise.
* sysdeps/unix/sysv/linux/msgrcv.c: Likewise.
* sysvipc/sys/shm.h (shmat, shmdt): Correct types.
* sysdeps/unix/sysv/linux/sys/kd.h: Define _LINUX_TYPES_H to avoid
use of kernel types.
1997-03-25 00:00 Ulrich Drepper <drepper@cygnus.com>
* sysdeps/unix/sysv/linux/netinet/ip.h (struct ip_timestamp):
Correct typos. Reported by a sun <asun@zoology.washington.edu>.
1997-03-20 21:58 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* sysdeps/libm-ieee754/s_asinhl.c: Fix sign of result.
1997-03-20 16:20 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* sysdeps/libm-ieee754/e_atan2l.c: Fix typo.
1997-03-20 14:23 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* sysdeps/m68k/fpu/__math.h (__logb, logb): Don't define.
* sysdeps/m68k/fpu/s_logb.c: Removed.
* sysdeps/m68k/fpu/s_logbf.c: Removed.
* sysdeps/m68k/fpu/s_logbl.c: Removed.
* sysdeps/m68k/fpu/__math.h (__ieee754_atan2, __ieee754_pow):
Don't define here.
* sysdeps/m68k/fpu/e_atan2.c: Rewritten.
* sysdeps/m68k/fpu/e_pow.c: Likewise.
* sysdeps/m68k/fpu/e_atan2f.c: Based on e_atan2.c.
* sysdeps/m68k/fpu/e_atan2l.c: Likewise.
* sysdeps/m68k/fpu/e_powf.c: Based on e_pow.c.
* sysdeps/m68k/fpu/e_powl.c: Likewise.
* sysdeps/m68k/fpu/s_log2.c: New file.
* sysdeps/m68k/fpu/s_log2f.c: New file.
* sysdeps/m68k/fpu/s_log2l.c: New file.
* sysdeps/m68k/fpu/s_exp2.c: New file.
* sysdeps/m68k/fpu/s_exp2f.c: New file.
* sysdeps/m68k/fpu/s_exp2l.c: New file.
1997-03-20 14:46 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* Makeconfig (all): Make sure this is always the default goal.
1997-03-20 11:09 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* math/libm-test.c: Increase epsilon in many places. Fix many
typos. Allow optinal argument also for short option.
1997-03-20 11:09 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* math/Makefile ($(objpfx)$(tests)): Link against libm.
1997-03-24 23:14 Ulrich Drepper <drepper@cygnus.com>
* sysdeps/libm-ieee754/s_fpclassifyl.c: Correct recognition of
denormalized numbers.
* sysdeps/i386/huge_val.h: Remove references to byte order macros.
Don't include <endian.h>.
1997-03-19 15:18 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* sysdeps/m68k/huge_val.h: Remove references to byte order macros.
Don't include <endian.h>.
1997-03-24 23:09 Ulrich Drepper <drepper@cygnus.com>
* inet/rcmd.c (iruserok): Use access instead of euidaccess.
1997-03-15 18:08 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* math/cmathcalls.h: Remove whitespace before function name in use
of __MATHDECL macro, to make it compilable with a traditional
preprocessor.
1997-03-24 15:31 Ulrich Drepper <drepper@cygnus.com>
* configure.in: Use AC_PROG_CC instead of AC_PROG_TOOL to find
compiler.
1997-03-24 02:34 Ulrich Drepper <drepper@cygnus.com>
* sysdeps/libm-ieee754/s_finitel.c (__finitel): Shift return value
by 31 positions to get 0/1 result.
Patch by Joe Keane <jgk@jgk.org>.
1997-03-23 12:15 H.J. Lu <hjl@gnu.ai.mit.edu>
* posix/getopt.c (__getopt_nonoption_flags): Make it extern
to prevent from ld linking in getopt.o even if there is another
incompatible one.
* posix/getopt_init.c (__getopt_nonoption_flags): Remove extern.
1997-03-23 23:30 Thorsten Kukuk <kukuk@vt.uni-paderborn.de>
* nis/nis_call.c (__do_niscall): Print message if cold start file
does not exist.
* nis/nis_file.c: Don't print error messages.
* nis/nis_local_name.c (nis_local_host): Fix pointer errors.
* nis/rpcsvc/ypclnt.h: Fix copyright and prototypes.
* nis/rpcsvc/nis.h: Likewise.
* nis/ypclnt.c: Fix prototypes.
1997-03-24 01:36 Ulrich Drepper <drepper@cygnus.com>
* sysdeps/libm-i387/e_scalb.S: Pop additional result before
returning.
* sysdeps/libm-i387/e_scalbf.S: Likewise.
* sysdeps/libm-i387/e_scalbl.S: Likewise.
Reported by Andreas Jaeger <aj@arthur.pfalz.de>.
* elf/rtld.c (dl_main): Set main_map->l_opencount to 1 also if
dynamic linker was called implicitly by the kernel.
Reported by Eric Youngdale <eric@andante.jic.com>.
* math/Makefile (CFLAGS-test-float.c, CFLAGS-test-double.c,
CFLAGS-test-longdouble.c): New variables. Set to -fno-inline to
prevent clever optimizations which corrupt the tests.
1997-03-23 21:33 Andreas Jaeger <aj@arthur.pfalz.de>
* math/libm-test.c (scalb_test): New function.
(sqrt_test): New function.
(scalbn_test): New function.
(ilogb_test): New function.
(main): Added calls for new test functions.
(ldexp_test): Add another test for ldexp(x,0).
1997-03-23 12:35 Andreas Jaeger <aj@arthur.pfalz.de>
* math/libm-test.c (remquo_test): Correct messages so that they
match the tests.
(copysign_test): Likewise.
1997-03-23 16:28 Ulrich Drepper <drepper@cygnus.com>
* stdio-common/Makefile (routines): Add printf_size.
* stdio-common/printf.h: Add declarations for printf_size and
printf_size_info.
* stdio-common/printf-parse.h (__printf_arginfo_table): Correct
declaration.
(parse_one_spec): Test whether __printf_function_table is not NULL
before using registered handlers and don't test
__printf_arginfo_table. Update nargs also when handler is
registered.
* stdio-common/vfprintf.c (vfprintf): Count number of specifiers
processed in fast loop.
* stdio-common/printf_size: New file.
1997-03-22 04:53 Ulgmon_out_readrich Drepper <drepper@cygnus.com>
1997-03-25 01:45:04 +00:00
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weak_alias (__nan, nan)
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Update.
1997-06-04 20:57 Ulrich Drepper <drepper@cygnus.com>
* manual/string.texi: Add comments to discourage use of index and
rindex.
(strtok, strsep): Apply function on copy of the strings in example.
(l64a): Add example.
* posix/unistd.h: Correct value for _POSIX_VERSION.
* sunrpc/Makefile (defines): Remove definition.
* sysdeps/ieee754/nan.h: Correct typo.
1997-06-04 10:50 Fila Kolodny <fila@ibi.com>
* posix/unistd.h: Add definition of __fchdir corresponding to fchdir.
* login/utmp_daemon.c: Correct location of utmpd.h.
1997-06-03 19:16 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* Makerules: Rename $(common-objpfx)distinfo-$(subdir) to
$(objpfx)distinfo.
* rpm/Makefile (distinfo): Adapted.
1997-06-03 18:32 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* rpm/Makefile (install-slib): Collect shared libraries here
instead of in install-lib, including libc.
(instvars): Add slib.
1997-06-03 18:23 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* login/Makefile (libutil-routines): Add updwtmp.
1997-06-03 16:16 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* monetary.h: New file, needed for localedata/tst-fmon.c.
1997-06-02 20:31 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* math/libm-test.c (cpow_test): Add epsilon for long double in
test for 2^10.
(identities): Add epsilon for float in second identity test.
* sysdeps/m68k/huge_val.h: Change GCC's HUGE_VAL{,F,L} to use
DI and SI mode integers instead of bytes. Fix value of HUGE_VALL.
* sysdeps/m68k/nan.h: New file.
* sysdeps/m68k/fpu/__math.h (isgreater, isgreaterequal, isless,
islessequal, islessgreater, isunordered): Fix assembler syntax.
* sysdeps/m68k/fpu/fraiseexcpt.c: Do it right so that gcc doesn't
optimize out the operations.
* sysdeps/libm-ieee754/s_nan.c: Use NaN macro instead of static
constant.
* sysdeps/libm-ieee754/s_nanf.c: Likewise.
* sysdeps/libm-ieee754/s_nanl.c: Likewise.
* math/carg.c [NO_LONG_DOUBLE]: Add alias for long double
function.
* sysdeps/libm-ieee754/s_erf.c: Likewise.
* sysdeps/libm-ieee754/s_fdim.c: Likewise.
* sysdeps/libm-ieee754/s_fmax.c: Likewise.
* sysdeps/libm-ieee754/s_fmin.c: Likewise.
* sysdeps/libm-ieee754/s_log2.c: Likewise.
* sysdeps/libm-ieee754/s_nan.c: Likewise.
* sysdeps/libm-ieee754/s_remquo.c: Likewise.
1997-06-04 19:05:38 +00:00
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#ifdef NO_LONG_DOUBLE
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strong_alias (__nan, __nanl)
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weak_alias (__nan, nanl)
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#endif
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