1996-08-30 00:58:28 +00:00
|
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|
/* e_acoshl.c -- long double version of e_acosh.c.
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* Conversion to long double by Ulrich Drepper,
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* Cygnus Support, drepper@cygnus.com.
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*/
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/*
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* ====================================================
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* Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
|
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*
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* Developed at SunPro, a Sun Microsystems, Inc. business.
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* Permission to use, copy, modify, and distribute this
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* software is freely granted, provided that this notice
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* is preserved.
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* ====================================================
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*/
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/* __ieee754_acoshl(x)
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* Method :
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* Based on
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* acoshl(x) = logl [ x + sqrtl(x*x-1) ]
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* we have
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* acoshl(x) := logl(x)+ln2, if x is large; else
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* acoshl(x) := logl(2x-1/(sqrtl(x*x-1)+x)) if x>2; else
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* acoshl(x) := log1pl(t+sqrtl(2.0*t+t*t)); where t=x-1.
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*
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* Special cases:
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* acoshl(x) is NaN with signal if x<1.
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* acoshl(NaN) is NaN without signal.
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*/
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2012-03-09 19:29:16 +00:00
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#include <math.h>
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#include <math_private.h>
|
2019-07-16 15:17:22 +00:00
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#include <libm-alias-finite.h>
|
1996-08-30 00:58:28 +00:00
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static const long double
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one = 1.0,
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ln2 = 6.931471805599453094287e-01L; /* 0x3FFE, 0xB17217F7, 0xD1CF79AC */
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|
2011-10-12 15:27:51 +00:00
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long double
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__ieee754_acoshl(long double x)
|
1996-08-30 00:58:28 +00:00
|
|
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{
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long double t;
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2017-08-03 19:55:04 +00:00
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uint32_t se,i0,i1;
|
update from main archive 960919
Thu Sep 19 21:50:55 1996 Ulrich Drepper <drepper@cygnus.com>
* sysdeps/posix/gettimeofday.c (__gettimeofday): Use localtime_r
instead of localtime.
Reported by Matthias Urlichs.
* shlib-versions: Remove version number for libcrypt.
* features.h: Define __USE_REENTRANT if _REENTRANT or _THREAD_SAFE.
* libc-symbols.h: Define _REENTRANT while compiling libc.
* sysdeps/unix/sysv/linux/i386/sysdep.S (__errno_location):
Define even if !_LIBC_REENTRANT.
* sysdeps/unix/sysv/linux/i386/sysdep.S (__errno_location):
Likewise.
* sysdeps/posix/cuserid.h: Remove prototype for geteuid().
De-ANSI-fy.
* MakeTAGS ($P/libc.pot): Generate correctly formed header.
* po/header.pot: Correct title line.
* po/nl.po: Update.
Thu Sep 19 18:59:55 1996 Ulrich Drepper <drepper@cygnus.com>
* Makeconfig (soversions.mk): Prefer shared lib version numbers
is add ons over version in libc itself.
* sysdeps/unix/sysv/linux/i386/sysdep.S: Include <sysdep.h>.
* sysdeps/unix/sysv/linux/i386/sysdep.h: Prevent multiple
inclusion.
* libio/iofgets.c: Use __flockfile and __funlockfile instead of
_IO_flockfile and _IO_funlockfile resp.
* locale/categories.def: Partly support for correct `era' handling
in LC_TIME category.
* locale/langinfo.h: Likewise.
* locale/programs/ld-time.c: Likewise.
* locale/localeinfo.h: Change comment a bit.
* malloc/memalign.c: Don't use goto, not necessary anymore.
1996-09-18 Paul Eggert <eggert@twinsun.com>
* time/mktime.c (ydhms_tm_diff): Work correctly even if year
is negative, or if time_t is unsigned.
* time/strftime.c (tm_diff): Work correctly even if tm_year
is near INT_MIN.
Tue Sep 17 16:14:34 1996 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* sysdeps/m68k/fpu/__math.h (__inline_mathop): Changed to generate
all three versions of the math function.
(__inline_mathopf, __inline_mathopl): Removed.
(__inline_functions): New temporary definition containing all
non-trivial inline functions.
Wed Sep 18 00:25:41 1996 Ulrich Drepper <drepper@cygnus.com>
* time/strftime.c (strftime): The T_FMT_AMPM string may be empty.
Tue Sep 17 20:27:18 1996 Ulrich Drepper <drepper@cygnus.com>
* math/Makefile (extra-libs-others): Use $(extra-libs) instead
of $(extra-libc).
Tue Sep 17 17:09:44 1996 Ulrich Drepper <drepper@cygnus.com>
* sysdeps/stub/fpu_control.h: Correct end of file comment.
Tue Sep 17 05:39:18 1996 Ulrich Drepper <drepper@cygnus.com>
* stdio-common/bug3.c, stdio-common/bug4.c, stdio-common/bug5.c,
stdio-common/test-popen.c: Remove temporary files after test.
* stdio-common/bug5.c: Use `system' instead of `execlp'.
Patches by Andreas Jaeger.
* stdio-common/bug5.c: Create string for `system' argument to
make sure the input and output file names are really correct.
Sun Sep 15 12:46:44 1996 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* configure.in: If $os contains a hyphen add the part before the
hyphen to $ostry.
Sun Sep 15 18:14:02 1996 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* sysdeps/m68k/fpu/__math.h (__ieee754_pow, __ieee754_powf,
__ieee754_powl): Rename local variable i to __i.
(__ieee754_atan2, __ieee754_atan2f, __ieee754_atan2l): New inline
functions.
* sysdeps/m68k/fpu/e_atan2.c, sysdeps/m68k/fpu/e_atan2f.c,
sysdeps/m68k/fpu/e_atan2l.c: New files.
1996-09-15 Paul Eggert <eggert@twinsun.com>
* manual/time.texi: Change `range X to Y' to `range X through
Y', to avoid ambiguity in English.
(strftime): Numbers that do not have a range indicated are not padded.
Describe E and O modifiers.
%g, %G, %u: New formats.
%C, %y, %Y: Describe behavior on negative years.
%e: Fix typo (was labeled %d).
%l, %V: Fix typo in range.
%M, %S, %U, %w, %W: Give ranges.
%p: Clarify how noon and midnight are handled for AM and PM.
%s: Clarify leap second handling.
%r: Now locale-defined.
%C, %D, %e, %h, %n, %r, %t, %T: Say that they are POSIX.2 extensions.
%z: Say that it is a GNU extension.
%Z: Wording fix.
* time/strftime.c: (strftime):
%V: Fix mishandling of week numbers near year boundaries.
%g, %G: New formats (suggested by Arthur David Olson).
%U, %W: Use inline expression instead of `week' function.
%C, %y: Handle negative years portably.
%C, %Y: Use width 1, since values can be arbitrarily wide.
%r: Use T_FMT_AMPM format if _NL_CURRENT is defined.
%u: New Posix.2 format.
%w: Width is 1, not 2.
(iso_week_days): New function, for %V, %G, %g.
(week): Remove; it didn't handle %V correctly.
(__isleap): New macro.
(mbsinit): Use arg, to pacify GCC -Wall.
1996-09-13 Paul Eggert <eggert@twinsun.com>
* time/strftime.c (strftime):
If using the GNU C library, do not bother to check for
multibyte encodings, since they're safe in formats. Otherwise:
- Check for multibyte encodings when encountering any character that
is not in the basic execution character set of the C Standard.
- Use mbrlen (if available) instead of mblen, to avoid modifying
mblen's internal state.
- Do not assume that '%' cannot appear as the first character of a
multibyte character sequence, since this is possible when not in the
initial shift state.
(HAVE_MBRLEN, MULTIBYTE_IS_FORMAT_SAFE): Define if _LIBC is defined.
(DO_MULTIBYTE): New macro.
(<ctype.h>): Do not include.
(<wchar.h>): Include if HAVE_MBRLEN.
(mbstate_t, mbrlen, mbsinit): Define if ! HAVE_MBRLEN.
(mbstate_zero): New constant.
1996-09-12 Paul Eggert <eggert@twinsun.com>
* time/strftime.c (strftime):
Use an empty zone if it can't be determined; POSIX.2 requires this.
Use plain `int' for pad and modifier (which now contain char value).
Use plain `int' for number_value, to print negative values correctly.
Use plain `int' for digits; there was no need to make it unsigned.
Initialize subfmt consistently.
Remove incorrect code for %EC and %Ey; they aren't implemented yet.
For %O, if there is no alternate digit, output Ascii instead of "".
Output the `%' of an unknown format; this is most likely the right
thing to do if a multibyte string has been misparsed.
Thu Sep 12 23:23:13 1996 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* stdio-common/scanf7.c (main): Remove extra conversion from
printf format string.
Thu Sep 12 23:01:16 1996 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* stdlib/test-canon.c (tests): Rename structure member from errno
to error, all uses changed.
Thu Sep 12 20:08:06 1996 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* sysdeps/m68k/fpu/__math.h (__ldexp, __ldexpf, __ldexpl):
Removed.
* sysdeps/m68k/fpu/s_ldexp.c, sysdeps/m68k/fpu/s_ldexpf.c,
sysdeps/m68k/fpu/s_ldexpl.c: Removed, use generic implementation
instead.
* sysdeps/m68k/fpu/s_scalbn.c, sysdeps/m68k/fpu/s_scalbnf.c,
sysdeps/m68k/fpu/s_scalbnl.c: Replaced with old contents of
s_ldexp.c, s_ldexpf.c and s_ldexpl.c, resp., suitably adpted.
* sysdeps/m68k/fpu/__math.h (__frexp, __frexpf, __frexpl):
Return value must be in [0.5, 1), not [1, 2). Reported by Chris
Lawrence.
(__ilogb, __ilogbf, __ilogbl): Check for argument being zero.
(__scalbn, __scalbnf, __scalbnl): Use second argument directly.
Thu Sep 12 19:59:24 1996 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* sysdeps/libm-ieee754/e_acoshl.c: Fix typos.
* sysdeps/libm-ieee754/s_cbrtl.c: Remove unused variable.
Thu Sep 12 19:59:24 1996 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* sysdeps/libm-ieee754/e_acoshl.c: Fix typos.
* sysdeps/libm-ieee754/s_cbrtl.c: Remove unused variable.
Thu Sep 12 19:56:07 1996 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* inet/herrno.c (__h_errno_location): Fix return type.
Tue Sep 17 10:51:58 1996 Thomas Bushnell, n/BSG <thomas@gnu.ai.mit.edu>
* malloc/memalign.c (memalign): Only acquire __libc_malloc_lock
for actual modifications to global state.
Fri Sep 13 01:21:36 1996 Thomas Bushnell, n/BSG <thomas@gnu.ai.mit.edu>
* sysdeps/mach/Makefile (includes): Add -I$(common-objpfx)mach/.
* sysdeps/mach/hurd/Makefile (includes): Add
-I$(common-objpfx)hurd/. Reported by Marcus Daniels.
* sysdeps/generic/schedbits.h (struct sched_param): Renamed from
struct sched_params.
* sysdeps/stub/sched_setp.c (__sched_setparam): struct
sched_params -> struct sched_param.
* sysdeps/stub/sched_getp.c (__sched_getparam): Likewise.
* sysdeps/stub/sched_sets.c (__sched_setscheduler): Likewise.
Thu Sep 12 23:58:25 1996 Thomas Bushnell, n/BSG <thomas@gnu.ai.mit.edu>
* sysdeps/mach/libc-lock.h (__libc_cleanup_region_start): Fix
syntax error.
* stdio-common/Makefile: Put lockfile in routines
unconditionally.
Define _MT_SAFE_IO if using for libio and compiling reentrant
libc.
* stdio-common/vfprintf.c (__flockfile, __funlockfile): Declare
this always, not just if _LIBC_REENTRANT.
(__funlockfile): Don't use weak_extern for this one;
__libc_cleanup_region_end might be defined and the use of
__funlockfile can't be protected the way the use of __flockfile
can be.
* sched.h: New file. Helper to access posix/sched.h.
Thu Sep 12 12:33:52 1996 Thomas Bushnell, n/BSG <thomas@gnu.ai.mit.edu>
* sysdeps/mach/hurd/dl-cache.c: Delete second copy of file
accidentally added on.
* sysdeps/stub/intr-msg.h: New file.
* stdio-common/vfprintf.c: Include <libc-lock.h>.
* stdio-common/vfscanf.c: Include <libc-lock.h>.
* sysdeps/mach/libc-lock.h (__libc_cleanup_region_start): New
macro.
(__libc_cleanup_region_end): New macro.
1996-09-20 01:58:09 +00:00
|
|
|
GET_LDOUBLE_WORDS(se,i0,i1,x);
|
1997-05-07 15:31:21 +00:00
|
|
|
if(se<0x3fff || se & 0x8000) { /* x < 1 */
|
1996-08-30 00:58:28 +00:00
|
|
|
return (x-x)/(x-x);
|
2001-07-07 22:47:57 +00:00
|
|
|
} else if(se >=0x401d) { /* x > 2**30 */
|
update from main archive 960919
Thu Sep 19 21:50:55 1996 Ulrich Drepper <drepper@cygnus.com>
* sysdeps/posix/gettimeofday.c (__gettimeofday): Use localtime_r
instead of localtime.
Reported by Matthias Urlichs.
* shlib-versions: Remove version number for libcrypt.
* features.h: Define __USE_REENTRANT if _REENTRANT or _THREAD_SAFE.
* libc-symbols.h: Define _REENTRANT while compiling libc.
* sysdeps/unix/sysv/linux/i386/sysdep.S (__errno_location):
Define even if !_LIBC_REENTRANT.
* sysdeps/unix/sysv/linux/i386/sysdep.S (__errno_location):
Likewise.
* sysdeps/posix/cuserid.h: Remove prototype for geteuid().
De-ANSI-fy.
* MakeTAGS ($P/libc.pot): Generate correctly formed header.
* po/header.pot: Correct title line.
* po/nl.po: Update.
Thu Sep 19 18:59:55 1996 Ulrich Drepper <drepper@cygnus.com>
* Makeconfig (soversions.mk): Prefer shared lib version numbers
is add ons over version in libc itself.
* sysdeps/unix/sysv/linux/i386/sysdep.S: Include <sysdep.h>.
* sysdeps/unix/sysv/linux/i386/sysdep.h: Prevent multiple
inclusion.
* libio/iofgets.c: Use __flockfile and __funlockfile instead of
_IO_flockfile and _IO_funlockfile resp.
* locale/categories.def: Partly support for correct `era' handling
in LC_TIME category.
* locale/langinfo.h: Likewise.
* locale/programs/ld-time.c: Likewise.
* locale/localeinfo.h: Change comment a bit.
* malloc/memalign.c: Don't use goto, not necessary anymore.
1996-09-18 Paul Eggert <eggert@twinsun.com>
* time/mktime.c (ydhms_tm_diff): Work correctly even if year
is negative, or if time_t is unsigned.
* time/strftime.c (tm_diff): Work correctly even if tm_year
is near INT_MIN.
Tue Sep 17 16:14:34 1996 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* sysdeps/m68k/fpu/__math.h (__inline_mathop): Changed to generate
all three versions of the math function.
(__inline_mathopf, __inline_mathopl): Removed.
(__inline_functions): New temporary definition containing all
non-trivial inline functions.
Wed Sep 18 00:25:41 1996 Ulrich Drepper <drepper@cygnus.com>
* time/strftime.c (strftime): The T_FMT_AMPM string may be empty.
Tue Sep 17 20:27:18 1996 Ulrich Drepper <drepper@cygnus.com>
* math/Makefile (extra-libs-others): Use $(extra-libs) instead
of $(extra-libc).
Tue Sep 17 17:09:44 1996 Ulrich Drepper <drepper@cygnus.com>
* sysdeps/stub/fpu_control.h: Correct end of file comment.
Tue Sep 17 05:39:18 1996 Ulrich Drepper <drepper@cygnus.com>
* stdio-common/bug3.c, stdio-common/bug4.c, stdio-common/bug5.c,
stdio-common/test-popen.c: Remove temporary files after test.
* stdio-common/bug5.c: Use `system' instead of `execlp'.
Patches by Andreas Jaeger.
* stdio-common/bug5.c: Create string for `system' argument to
make sure the input and output file names are really correct.
Sun Sep 15 12:46:44 1996 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* configure.in: If $os contains a hyphen add the part before the
hyphen to $ostry.
Sun Sep 15 18:14:02 1996 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* sysdeps/m68k/fpu/__math.h (__ieee754_pow, __ieee754_powf,
__ieee754_powl): Rename local variable i to __i.
(__ieee754_atan2, __ieee754_atan2f, __ieee754_atan2l): New inline
functions.
* sysdeps/m68k/fpu/e_atan2.c, sysdeps/m68k/fpu/e_atan2f.c,
sysdeps/m68k/fpu/e_atan2l.c: New files.
1996-09-15 Paul Eggert <eggert@twinsun.com>
* manual/time.texi: Change `range X to Y' to `range X through
Y', to avoid ambiguity in English.
(strftime): Numbers that do not have a range indicated are not padded.
Describe E and O modifiers.
%g, %G, %u: New formats.
%C, %y, %Y: Describe behavior on negative years.
%e: Fix typo (was labeled %d).
%l, %V: Fix typo in range.
%M, %S, %U, %w, %W: Give ranges.
%p: Clarify how noon and midnight are handled for AM and PM.
%s: Clarify leap second handling.
%r: Now locale-defined.
%C, %D, %e, %h, %n, %r, %t, %T: Say that they are POSIX.2 extensions.
%z: Say that it is a GNU extension.
%Z: Wording fix.
* time/strftime.c: (strftime):
%V: Fix mishandling of week numbers near year boundaries.
%g, %G: New formats (suggested by Arthur David Olson).
%U, %W: Use inline expression instead of `week' function.
%C, %y: Handle negative years portably.
%C, %Y: Use width 1, since values can be arbitrarily wide.
%r: Use T_FMT_AMPM format if _NL_CURRENT is defined.
%u: New Posix.2 format.
%w: Width is 1, not 2.
(iso_week_days): New function, for %V, %G, %g.
(week): Remove; it didn't handle %V correctly.
(__isleap): New macro.
(mbsinit): Use arg, to pacify GCC -Wall.
1996-09-13 Paul Eggert <eggert@twinsun.com>
* time/strftime.c (strftime):
If using the GNU C library, do not bother to check for
multibyte encodings, since they're safe in formats. Otherwise:
- Check for multibyte encodings when encountering any character that
is not in the basic execution character set of the C Standard.
- Use mbrlen (if available) instead of mblen, to avoid modifying
mblen's internal state.
- Do not assume that '%' cannot appear as the first character of a
multibyte character sequence, since this is possible when not in the
initial shift state.
(HAVE_MBRLEN, MULTIBYTE_IS_FORMAT_SAFE): Define if _LIBC is defined.
(DO_MULTIBYTE): New macro.
(<ctype.h>): Do not include.
(<wchar.h>): Include if HAVE_MBRLEN.
(mbstate_t, mbrlen, mbsinit): Define if ! HAVE_MBRLEN.
(mbstate_zero): New constant.
1996-09-12 Paul Eggert <eggert@twinsun.com>
* time/strftime.c (strftime):
Use an empty zone if it can't be determined; POSIX.2 requires this.
Use plain `int' for pad and modifier (which now contain char value).
Use plain `int' for number_value, to print negative values correctly.
Use plain `int' for digits; there was no need to make it unsigned.
Initialize subfmt consistently.
Remove incorrect code for %EC and %Ey; they aren't implemented yet.
For %O, if there is no alternate digit, output Ascii instead of "".
Output the `%' of an unknown format; this is most likely the right
thing to do if a multibyte string has been misparsed.
Thu Sep 12 23:23:13 1996 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* stdio-common/scanf7.c (main): Remove extra conversion from
printf format string.
Thu Sep 12 23:01:16 1996 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* stdlib/test-canon.c (tests): Rename structure member from errno
to error, all uses changed.
Thu Sep 12 20:08:06 1996 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* sysdeps/m68k/fpu/__math.h (__ldexp, __ldexpf, __ldexpl):
Removed.
* sysdeps/m68k/fpu/s_ldexp.c, sysdeps/m68k/fpu/s_ldexpf.c,
sysdeps/m68k/fpu/s_ldexpl.c: Removed, use generic implementation
instead.
* sysdeps/m68k/fpu/s_scalbn.c, sysdeps/m68k/fpu/s_scalbnf.c,
sysdeps/m68k/fpu/s_scalbnl.c: Replaced with old contents of
s_ldexp.c, s_ldexpf.c and s_ldexpl.c, resp., suitably adpted.
* sysdeps/m68k/fpu/__math.h (__frexp, __frexpf, __frexpl):
Return value must be in [0.5, 1), not [1, 2). Reported by Chris
Lawrence.
(__ilogb, __ilogbf, __ilogbl): Check for argument being zero.
(__scalbn, __scalbnf, __scalbnl): Use second argument directly.
Thu Sep 12 19:59:24 1996 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* sysdeps/libm-ieee754/e_acoshl.c: Fix typos.
* sysdeps/libm-ieee754/s_cbrtl.c: Remove unused variable.
Thu Sep 12 19:59:24 1996 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* sysdeps/libm-ieee754/e_acoshl.c: Fix typos.
* sysdeps/libm-ieee754/s_cbrtl.c: Remove unused variable.
Thu Sep 12 19:56:07 1996 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* inet/herrno.c (__h_errno_location): Fix return type.
Tue Sep 17 10:51:58 1996 Thomas Bushnell, n/BSG <thomas@gnu.ai.mit.edu>
* malloc/memalign.c (memalign): Only acquire __libc_malloc_lock
for actual modifications to global state.
Fri Sep 13 01:21:36 1996 Thomas Bushnell, n/BSG <thomas@gnu.ai.mit.edu>
* sysdeps/mach/Makefile (includes): Add -I$(common-objpfx)mach/.
* sysdeps/mach/hurd/Makefile (includes): Add
-I$(common-objpfx)hurd/. Reported by Marcus Daniels.
* sysdeps/generic/schedbits.h (struct sched_param): Renamed from
struct sched_params.
* sysdeps/stub/sched_setp.c (__sched_setparam): struct
sched_params -> struct sched_param.
* sysdeps/stub/sched_getp.c (__sched_getparam): Likewise.
* sysdeps/stub/sched_sets.c (__sched_setscheduler): Likewise.
Thu Sep 12 23:58:25 1996 Thomas Bushnell, n/BSG <thomas@gnu.ai.mit.edu>
* sysdeps/mach/libc-lock.h (__libc_cleanup_region_start): Fix
syntax error.
* stdio-common/Makefile: Put lockfile in routines
unconditionally.
Define _MT_SAFE_IO if using for libio and compiling reentrant
libc.
* stdio-common/vfprintf.c (__flockfile, __funlockfile): Declare
this always, not just if _LIBC_REENTRANT.
(__funlockfile): Don't use weak_extern for this one;
__libc_cleanup_region_end might be defined and the use of
__funlockfile can't be protected the way the use of __flockfile
can be.
* sched.h: New file. Helper to access posix/sched.h.
Thu Sep 12 12:33:52 1996 Thomas Bushnell, n/BSG <thomas@gnu.ai.mit.edu>
* sysdeps/mach/hurd/dl-cache.c: Delete second copy of file
accidentally added on.
* sysdeps/stub/intr-msg.h: New file.
* stdio-common/vfprintf.c: Include <libc-lock.h>.
* stdio-common/vfscanf.c: Include <libc-lock.h>.
* sysdeps/mach/libc-lock.h (__libc_cleanup_region_start): New
macro.
(__libc_cleanup_region_end): New macro.
1996-09-20 01:58:09 +00:00
|
|
|
if(se >=0x7fff) { /* x is inf of NaN */
|
2011-10-12 15:27:51 +00:00
|
|
|
return x+x;
|
1996-08-30 00:58:28 +00:00
|
|
|
} else
|
|
|
|
|
return __ieee754_logl(x)+ln2; /* acoshl(huge)=logl(2x) */
|
2014-05-14 12:35:40 +00:00
|
|
|
} else if(((se-0x3fff)|(i0^0x80000000)|i1)==0) {
|
1996-08-30 00:58:28 +00:00
|
|
|
return 0.0; /* acosh(1) = 0 */
|
update from main archive 960919
Thu Sep 19 21:50:55 1996 Ulrich Drepper <drepper@cygnus.com>
* sysdeps/posix/gettimeofday.c (__gettimeofday): Use localtime_r
instead of localtime.
Reported by Matthias Urlichs.
* shlib-versions: Remove version number for libcrypt.
* features.h: Define __USE_REENTRANT if _REENTRANT or _THREAD_SAFE.
* libc-symbols.h: Define _REENTRANT while compiling libc.
* sysdeps/unix/sysv/linux/i386/sysdep.S (__errno_location):
Define even if !_LIBC_REENTRANT.
* sysdeps/unix/sysv/linux/i386/sysdep.S (__errno_location):
Likewise.
* sysdeps/posix/cuserid.h: Remove prototype for geteuid().
De-ANSI-fy.
* MakeTAGS ($P/libc.pot): Generate correctly formed header.
* po/header.pot: Correct title line.
* po/nl.po: Update.
Thu Sep 19 18:59:55 1996 Ulrich Drepper <drepper@cygnus.com>
* Makeconfig (soversions.mk): Prefer shared lib version numbers
is add ons over version in libc itself.
* sysdeps/unix/sysv/linux/i386/sysdep.S: Include <sysdep.h>.
* sysdeps/unix/sysv/linux/i386/sysdep.h: Prevent multiple
inclusion.
* libio/iofgets.c: Use __flockfile and __funlockfile instead of
_IO_flockfile and _IO_funlockfile resp.
* locale/categories.def: Partly support for correct `era' handling
in LC_TIME category.
* locale/langinfo.h: Likewise.
* locale/programs/ld-time.c: Likewise.
* locale/localeinfo.h: Change comment a bit.
* malloc/memalign.c: Don't use goto, not necessary anymore.
1996-09-18 Paul Eggert <eggert@twinsun.com>
* time/mktime.c (ydhms_tm_diff): Work correctly even if year
is negative, or if time_t is unsigned.
* time/strftime.c (tm_diff): Work correctly even if tm_year
is near INT_MIN.
Tue Sep 17 16:14:34 1996 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* sysdeps/m68k/fpu/__math.h (__inline_mathop): Changed to generate
all three versions of the math function.
(__inline_mathopf, __inline_mathopl): Removed.
(__inline_functions): New temporary definition containing all
non-trivial inline functions.
Wed Sep 18 00:25:41 1996 Ulrich Drepper <drepper@cygnus.com>
* time/strftime.c (strftime): The T_FMT_AMPM string may be empty.
Tue Sep 17 20:27:18 1996 Ulrich Drepper <drepper@cygnus.com>
* math/Makefile (extra-libs-others): Use $(extra-libs) instead
of $(extra-libc).
Tue Sep 17 17:09:44 1996 Ulrich Drepper <drepper@cygnus.com>
* sysdeps/stub/fpu_control.h: Correct end of file comment.
Tue Sep 17 05:39:18 1996 Ulrich Drepper <drepper@cygnus.com>
* stdio-common/bug3.c, stdio-common/bug4.c, stdio-common/bug5.c,
stdio-common/test-popen.c: Remove temporary files after test.
* stdio-common/bug5.c: Use `system' instead of `execlp'.
Patches by Andreas Jaeger.
* stdio-common/bug5.c: Create string for `system' argument to
make sure the input and output file names are really correct.
Sun Sep 15 12:46:44 1996 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* configure.in: If $os contains a hyphen add the part before the
hyphen to $ostry.
Sun Sep 15 18:14:02 1996 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* sysdeps/m68k/fpu/__math.h (__ieee754_pow, __ieee754_powf,
__ieee754_powl): Rename local variable i to __i.
(__ieee754_atan2, __ieee754_atan2f, __ieee754_atan2l): New inline
functions.
* sysdeps/m68k/fpu/e_atan2.c, sysdeps/m68k/fpu/e_atan2f.c,
sysdeps/m68k/fpu/e_atan2l.c: New files.
1996-09-15 Paul Eggert <eggert@twinsun.com>
* manual/time.texi: Change `range X to Y' to `range X through
Y', to avoid ambiguity in English.
(strftime): Numbers that do not have a range indicated are not padded.
Describe E and O modifiers.
%g, %G, %u: New formats.
%C, %y, %Y: Describe behavior on negative years.
%e: Fix typo (was labeled %d).
%l, %V: Fix typo in range.
%M, %S, %U, %w, %W: Give ranges.
%p: Clarify how noon and midnight are handled for AM and PM.
%s: Clarify leap second handling.
%r: Now locale-defined.
%C, %D, %e, %h, %n, %r, %t, %T: Say that they are POSIX.2 extensions.
%z: Say that it is a GNU extension.
%Z: Wording fix.
* time/strftime.c: (strftime):
%V: Fix mishandling of week numbers near year boundaries.
%g, %G: New formats (suggested by Arthur David Olson).
%U, %W: Use inline expression instead of `week' function.
%C, %y: Handle negative years portably.
%C, %Y: Use width 1, since values can be arbitrarily wide.
%r: Use T_FMT_AMPM format if _NL_CURRENT is defined.
%u: New Posix.2 format.
%w: Width is 1, not 2.
(iso_week_days): New function, for %V, %G, %g.
(week): Remove; it didn't handle %V correctly.
(__isleap): New macro.
(mbsinit): Use arg, to pacify GCC -Wall.
1996-09-13 Paul Eggert <eggert@twinsun.com>
* time/strftime.c (strftime):
If using the GNU C library, do not bother to check for
multibyte encodings, since they're safe in formats. Otherwise:
- Check for multibyte encodings when encountering any character that
is not in the basic execution character set of the C Standard.
- Use mbrlen (if available) instead of mblen, to avoid modifying
mblen's internal state.
- Do not assume that '%' cannot appear as the first character of a
multibyte character sequence, since this is possible when not in the
initial shift state.
(HAVE_MBRLEN, MULTIBYTE_IS_FORMAT_SAFE): Define if _LIBC is defined.
(DO_MULTIBYTE): New macro.
(<ctype.h>): Do not include.
(<wchar.h>): Include if HAVE_MBRLEN.
(mbstate_t, mbrlen, mbsinit): Define if ! HAVE_MBRLEN.
(mbstate_zero): New constant.
1996-09-12 Paul Eggert <eggert@twinsun.com>
* time/strftime.c (strftime):
Use an empty zone if it can't be determined; POSIX.2 requires this.
Use plain `int' for pad and modifier (which now contain char value).
Use plain `int' for number_value, to print negative values correctly.
Use plain `int' for digits; there was no need to make it unsigned.
Initialize subfmt consistently.
Remove incorrect code for %EC and %Ey; they aren't implemented yet.
For %O, if there is no alternate digit, output Ascii instead of "".
Output the `%' of an unknown format; this is most likely the right
thing to do if a multibyte string has been misparsed.
Thu Sep 12 23:23:13 1996 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* stdio-common/scanf7.c (main): Remove extra conversion from
printf format string.
Thu Sep 12 23:01:16 1996 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* stdlib/test-canon.c (tests): Rename structure member from errno
to error, all uses changed.
Thu Sep 12 20:08:06 1996 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* sysdeps/m68k/fpu/__math.h (__ldexp, __ldexpf, __ldexpl):
Removed.
* sysdeps/m68k/fpu/s_ldexp.c, sysdeps/m68k/fpu/s_ldexpf.c,
sysdeps/m68k/fpu/s_ldexpl.c: Removed, use generic implementation
instead.
* sysdeps/m68k/fpu/s_scalbn.c, sysdeps/m68k/fpu/s_scalbnf.c,
sysdeps/m68k/fpu/s_scalbnl.c: Replaced with old contents of
s_ldexp.c, s_ldexpf.c and s_ldexpl.c, resp., suitably adpted.
* sysdeps/m68k/fpu/__math.h (__frexp, __frexpf, __frexpl):
Return value must be in [0.5, 1), not [1, 2). Reported by Chris
Lawrence.
(__ilogb, __ilogbf, __ilogbl): Check for argument being zero.
(__scalbn, __scalbnf, __scalbnl): Use second argument directly.
Thu Sep 12 19:59:24 1996 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* sysdeps/libm-ieee754/e_acoshl.c: Fix typos.
* sysdeps/libm-ieee754/s_cbrtl.c: Remove unused variable.
Thu Sep 12 19:59:24 1996 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* sysdeps/libm-ieee754/e_acoshl.c: Fix typos.
* sysdeps/libm-ieee754/s_cbrtl.c: Remove unused variable.
Thu Sep 12 19:56:07 1996 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* inet/herrno.c (__h_errno_location): Fix return type.
Tue Sep 17 10:51:58 1996 Thomas Bushnell, n/BSG <thomas@gnu.ai.mit.edu>
* malloc/memalign.c (memalign): Only acquire __libc_malloc_lock
for actual modifications to global state.
Fri Sep 13 01:21:36 1996 Thomas Bushnell, n/BSG <thomas@gnu.ai.mit.edu>
* sysdeps/mach/Makefile (includes): Add -I$(common-objpfx)mach/.
* sysdeps/mach/hurd/Makefile (includes): Add
-I$(common-objpfx)hurd/. Reported by Marcus Daniels.
* sysdeps/generic/schedbits.h (struct sched_param): Renamed from
struct sched_params.
* sysdeps/stub/sched_setp.c (__sched_setparam): struct
sched_params -> struct sched_param.
* sysdeps/stub/sched_getp.c (__sched_getparam): Likewise.
* sysdeps/stub/sched_sets.c (__sched_setscheduler): Likewise.
Thu Sep 12 23:58:25 1996 Thomas Bushnell, n/BSG <thomas@gnu.ai.mit.edu>
* sysdeps/mach/libc-lock.h (__libc_cleanup_region_start): Fix
syntax error.
* stdio-common/Makefile: Put lockfile in routines
unconditionally.
Define _MT_SAFE_IO if using for libio and compiling reentrant
libc.
* stdio-common/vfprintf.c (__flockfile, __funlockfile): Declare
this always, not just if _LIBC_REENTRANT.
(__funlockfile): Don't use weak_extern for this one;
__libc_cleanup_region_end might be defined and the use of
__funlockfile can't be protected the way the use of __flockfile
can be.
* sched.h: New file. Helper to access posix/sched.h.
Thu Sep 12 12:33:52 1996 Thomas Bushnell, n/BSG <thomas@gnu.ai.mit.edu>
* sysdeps/mach/hurd/dl-cache.c: Delete second copy of file
accidentally added on.
* sysdeps/stub/intr-msg.h: New file.
* stdio-common/vfprintf.c: Include <libc-lock.h>.
* stdio-common/vfscanf.c: Include <libc-lock.h>.
* sysdeps/mach/libc-lock.h (__libc_cleanup_region_start): New
macro.
(__libc_cleanup_region_end): New macro.
1996-09-20 01:58:09 +00:00
|
|
|
} else if (se > 0x4000) { /* 2**28 > x > 2 */
|
1996-08-30 00:58:28 +00:00
|
|
|
t=x*x;
|
2018-03-15 18:05:03 +00:00
|
|
|
return __ieee754_logl(2.0*x-one/(x+sqrtl(t-one)));
|
1996-08-30 00:58:28 +00:00
|
|
|
} else { /* 1<x<2 */
|
|
|
|
|
t = x-one;
|
2018-03-15 18:05:03 +00:00
|
|
|
return __log1pl(t+sqrtl(2.0*t+t*t));
|
1996-08-30 00:58:28 +00:00
|
|
|
}
|
|
|
|
|
}
|
2019-07-16 15:17:22 +00:00
|
|
|
libm_alias_finite (__ieee754_acoshl, __acoshl)
|
