Provide a 64-bit-time version of __difftime (but do not assume
__time64_t is a signed int so that Gnulib can reuse the code)
and make the 32-bit version a wrapper of it.
Current difftime expects two time_t arguments and returns a
double. To preserve source-code compatibility, its 64-bit-time
equivalent expects two __time64_t arguments but still returns
a double.
This patch was tested by running 'make check' on branch
master then applying this patch and its two predecessors and
running 'make check' again, and checking that both 'make check'
yield identical results. This was done on x86_64-linux-gnu and
i686-linux-gnu.
This patch was also functionally tested with an ad hoc userland
C program which checks the result of difftime for various pairs
of 32-bit and, for 64-bit builds, of 64-bit time_t values too.
The program was built and run against a glibc with and without
the patch, and the results compared to ensure the patch does
not change the behavior of difftime.
* include/time.h (__difftime64): Add.
* time/difftime.c (subtract): convert to 64-bit time.
* time/difftime.c (__difftime64): Add.
* time/difftime.c (__difftime): Wrap around __difftime64.
2004-11-09 Paul Eggert <eggert@cs.ucla.edu.
[BZ #535]
* time/difftime.c: Fix a double-rounding bug on hosts with
64-bit time_t and long double being IEEE double. Also, port
to more valid C99 hosts, even those that have padding bits.
Don't include <values.h> since it is marked as an obsolescent
interface. Include <limits.h>, <float.h>, and <stdint.h> instead.
(TYPE_BITS, TYPE_FLOATING, TYPE_SIGNED): New macros.
(subtract): New static function, that works correctly without
double-rounding, even on hosts with 64-bit time_t. Also cater
to hosts with padding bits.
(__difftime): Use it. Use DBL_MANT_DIG and LDBL_MANT_DIG to
determine whether floating types are wide enough: the old
test (which used sizeof) could in theory report the wrong results
on hosts with padding bits in floating-point values.
* time/difftime.c (__difftime): New renamed. Make old name alias.
Use __difftime in recursive call.
* sysdeps/powerpc/fpu/bits/mathinline.h: Add __signbitf and
2001-07-06 Paul Eggert <eggert@twinsun.com>
* manual/argp.texi: Remove ignored LGPL copyright notice; it's
not appropriate for documentation anyway.
* manual/libc-texinfo.sh: "Library General Public License" ->
"Lesser General Public License".
2001-07-06 Andreas Jaeger <aj@suse.de>
* All files under GPL/LGPL version 2: Place under LGPL version
2.1.
Wed Jan 1 15:15:00 1997 Ulrich Drepper <drepper@cygnus.com>
* libio/Makefile (routines): Add fcloseall.
* libio/fcloseall.c: New file.
* libio/stdio.h [__USE_GNU]: Add prototype for fcloseall.
* libio/iofclose.c: Don't close all streams when argument is NULL.
* stdio/Makefile (routines): Add fcloseall.
* stdio/fcloseall.c: New file.
* stdio/stdio.h [__USE_GNU]: Add prototype for fcloseall.
* stdio/fclose.c: Don't close all streams when argument is NULL.
* manual/stdio.texi: Document fcloseall.
* sysdeps/generic/abort.c: Call __fcloseall instead of fclose with
NULL argument.
* socket/sys/un.h (SUN_LEN): Add cast.
* sunrpc/auth_unix.c (authunix_create): Change parameter types
of uid, gid, and aup_gids to uid_t and gid_t respectively.
(authunix_create_default): Likewise.
(authunix_refresh): Correct cast for aup_gids assignment.
* sunrpc/rpc/auth.h (authunix_create): Correct types in declaration.
* sunrpc/rpc/auth_unix.h (struct authunix_parms): Correct field
types to uid_t and gid_t respectively.
(struct short_hand_verf): Likewise.
Reported by Andreas Schwab.
* sysdeps/ieee754/Makefile: New file. Make sure ieee754.h gets
installed.
* sysdeps/ieee754/ieee754.h: Protect against multiple inclusion and
use in C++ programs.
* sysdeps/libm-i387/e_pow.S: New file. Optimized ix87 assembler
version of pow() function.
* sysdeps/libm-i387/e_powf.S: New file. Float version.
* sysdeps/libm-i387/e_powl.S: New file. Long double version.
* sysdeps/libm-i387/s_expm1.S: New file. Optimized ix87 assembler
version of expm1() function.
* sysdeps/libm-i387/s_expm1f.S: New file. Float version.
* sysdeps/libm-i387/s_expm1l.S: New file. Long double version.
* sysdeps/libm-i387/e_exp.S: Optimize handling of +-Inf.
Better handling of computation stack from current NetBSD sources.
* sysdeps/libm-i387/e_expf.S: Likewise.
* sysdeps/libm-i387/e_expl.S: Likewise.
* sysdeps/libm-i387/e_log.S: Use fstp instead of fincstp.
* sysdeps/libm-i387/e_logf.S: Likewise.
* sysdeps/libm-i387/e_logl.S: Likewise.
* sysdeps/libm-i387/e_log10.S: Likewise.
* sysdeps/libm-i387/e_log10f.S: Likewise.
* sysdeps/libm-i387/e_log10l.S: Likewise.
* sysdeps/libm-i387/s_asinh.S: Likewise.
* sysdeps/libm-i387/s_asinhf.S: Likewise.
* sysdeps/libm-i387/s_asinhl.S: Likewise.
* sysdeps/libm-i387/s_significandl.S: Likewise.
* sysdeps/libm-i387/s_ceil.S: Don't create stack frame. Modify
stack pointer directly. Use 32 bit instead of 16 bit operations.
* sysdeps/libm-i387/s_ceilf.S: Likewise.
* sysdeps/libm-i387/s_ceill.S: Likewise.
* sysdeps/libm-i387/s_floor.S: Likewise.
* sysdeps/libm-i387/s_floorf.S: Likewise.
* sysdeps/libm-i387/s_floorl.S: Likewise.
* sysdeps/libm-ieee754/e_coshf.c (huge): Don't declare volatile.
* sysdeps/libm-ieee754/e_expf.c: Likewise.
* sysdeps/libm-ieee754/e_powf.c: Likewise.
From current NetBSD sources.
* sysdeps/libm-ieee754/e_hypot.c (__ieee754_hypot): Don't initialize
`a' and `b' in definition.
* sysdeps/libm-ieee754/e_hypotf.c: Likewise.
* sysdeps/libm-ieee754/e_hypotl.c: New file. Long double
implementation.
* sysdeps/libm-ieee754/e_sinhl.c: New file. Long double
implementation.
* sysdeps/stub/e_hypotl.c: Removed. We have a real version now.
* sysdeps/stub/e_sinhl.c: Removed.
* sysdeps/posix/sigpause.c (__sigpause): Use sigdelset instead of
sigaddset. Reported by Andreas Schwab.
(__default_sigpause): New function. Call __sigpause as BSD version.
Make this the default function by providing alias sigpause.
* sysdeps/stub/sigpause.c (__default_sigpause): New funciton.
Simply fail. Provide alias sigpause.
Wed Jan 1 12:34:54 1997 Ulrich Drepper <drepper@cygnus.com>
* po/es.po: Update for glibc-1.98.
* po/fr.po: Likewise.
* po/sv.po: New file. Swedish translation.
Wed Jan 1 12:18:07 1997 MacGyver <macgyver@tos.net>
* values.h: Fix typos: use SHRT_MAX but SHORT_MAX and SHRT_MIN but
SHORT_MIN.
Tue Dec 24 23:10:21 1996 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* Makefile: Replace `stubs.h' by `gnu/stubs.h'.
* features.h: Include <gnu/stubs.h> instead of <stubs.h>.
Tue Dec 24 22:16:55 1996 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* Makefile (subdirs): Move `elf' last so that librtld.so isn't
relinked in the `make others' pass if an add-on adds something to
libc.
Mon Dec 23 21:23:16 1996 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* sysdeps/m68k/abort-instr.h: New File.
Mon Dec 23 21:16:38 1996 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* sysdeps/m68k/Makefile ($(subdir)=elf): Define CFLAGS-rtld.c
to prevent warning.
Mon Dec 23 21:14:22 1996 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* resolv/Makefile (subdirs-dirs): Define.
Mon Dec 23 20:56:49 1996 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* sysdeps/gnu/utmpbits.h (struct utmp): Fix padding.
Mon Dec 30 11:05:11 1996 Ulrich Drepper <drepper@cygnus.com>
Update from ADO tzcode1996o.
* time/difftime.c: De-ANSI-declfy. Simplify computation of hibit
according to ADO version.
* time/zic.c: Correct typo is message.
Update from ADO tzdata1996n.
* time/asia: Updated.
* time/australasia: Likewise.
* time/europe: Likewise.
* time/northamerica: Likewise.
* time/southamerica: Likewise.
