Joseph Myers
f8ba1b5654
Fix log2 (1) in round-downward mode (bug 17042).
...
As with other issues of this kind, bug 17042 is log2 (1) wrongly
returning -0 instead of +0 in round-downward mode because of
implementations effectively in terms of log1p (x - 1). This patch
fixes the issue in the same way used for log and log10.
Tested x86_64 and x86 and ulps updated accordingly. Also tested for
mips64 to confirm a fix was needed for ldbl-128 and to validate that
fix (also applied to ldbl-128ibm since that version of log2l is
essentially the same as the ldbl-128 one).
[BZ #17042 ]
* sysdeps/i386/fpu/e_log2.S (__ieee754_log2): Take absolete value
when x - 1 is zero.
* sysdeps/i386/fpu/e_log2f.S (__ieee754_log2f): Likewise.
* sysdeps/i386/fpu/e_log2l.S (__ieee754_log2l): Likewise.
* sysdeps/ieee754/ldbl-128/e_log2l.c (__ieee754_log2l): Return
0.0L for an argument of 1.0L.
* sysdeps/ieee754/ldbl-128ibm/e_log2l.c (__ieee754_log2l):
Likewise.
* sysdeps/x86_64/fpu/e_log2l.S (__ieee754_log2l): Take absolute
value when x - 1 is zero.
* math/libm-test.inc (log2_test): Use ALL_RM_TEST.
* sysdeps/i386/fpu/libm-test-ulps: Update.
* sysdeps/x86_64/fpu/libm-test-ulps: Likewise.
2014-06-10 12:07:15 +00:00
Richard Henderson
1ed0291c31
Use <> for math.h and math_private.h everywhere.
...
Entire tree edited via find | grep | sed.
2012-03-09 16:09:10 -08:00
Paul Eggert
59ba27a63a
Replace FSF snail mail address with URLs.
2012-02-09 23:18:22 +00:00
Ulrich Drepper
0ac5ae2335
Optimize libm
...
libm is now somewhat integrated with gcc's -ffinite-math-only option
and lots of the wrapper functions have been optimized.
2011-10-12 11:27:51 -04:00
Roland McGrath
cc7375ce02
2002-08-26 Brian Youmans <3diff@gnu.org>
...
* crypt/crypt.c: Changed copying permission notice to Lesser GPL
from Library GPL.
* crypt/crypt_util.c: Likewise.
* crypt/ufc.c: Likewise.
* elf/dl-conflict.c: Likewise.
* elf/dl-iteratephdr.c: Likewise.
* iconv/iconvconfig.h: Likewise.
* linuxthreads/Examples/ex10.c: Likewise.
* linuxthreads/Examples/ex11.c: Likewise.
* linuxthreads/Examples/ex13.c: Likewise.
* linuxthreads/Examples/ex8.c: Likewise.
* linuxthreads/Examples/ex9.c: Likewise.
* linuxthreads/barrier.c: Likewise.
* linuxthreads/events.c: Likewise.
* linuxthreads/lockfile.c: Likewise.
* linuxthreads/no-tsd.c: Likewise.
* linuxthreads/pt-machine.c: Likewise.
* linuxthreads/ptclock_gettime.c: Likewise.
* linuxthreads/ptclock_settime.c: Likewise.
* linuxthreads/rwlock.c: Likewise.
* linuxthreads/sysdeps/alpha/pspinlock.c: Likewise.
* linuxthreads/sysdeps/alpha/pt-machine.h: Likewise.
* linuxthreads/sysdeps/arm/pspinlock.c: Likewise.
* linuxthreads/sysdeps/arm/pt-machine.h: Likewise.
* linuxthreads/sysdeps/cris/pspinlock.c: Likewise.
* linuxthreads/sysdeps/cris/pt-machine.h: Likewise.
* linuxthreads/sysdeps/hppa/pspinlock.c: Likewise.
* linuxthreads/sysdeps/hppa/pt-machine.h: Likewise.
* linuxthreads/sysdeps/i386/i686/pt-machine.h: Likewise.
* linuxthreads/sysdeps/i386/pspinlock.c: Likewise.
* linuxthreads/sysdeps/i386/pt-machine.h: Likewise.
* linuxthreads/sysdeps/i386/useldt.h: Likewise.
* linuxthreads/sysdeps/ia64/pspinlock.c: Likewise.
* linuxthreads/sysdeps/ia64/pt-machine.h: Likewise.
* linuxthreads/sysdeps/m68k/pspinlock.c: Likewise.
* linuxthreads/sysdeps/m68k/pt-machine.h: Likewise.
* linuxthreads/sysdeps/mips/pspinlock.c: Likewise.
* linuxthreads/sysdeps/mips/pt-machine.h: Likewise.
* linuxthreads/sysdeps/powerpc/pspinlock.c: Likewise.
* linuxthreads/sysdeps/powerpc/pt-machine.h: Likewise.
* linuxthreads/sysdeps/pthread/bits/initspin.h: Likewise.
* linuxthreads/sysdeps/pthread/bits/libc-lock.h: Likewise.
* linuxthreads/sysdeps/pthread/bits/libc-tsd.h: Likewise.
* linuxthreads/sysdeps/pthread/getcpuclockid.c: Likewise.
* linuxthreads/sysdeps/pthread/posix-timer.h: Likewise.
* linuxthreads/sysdeps/pthread/timer_create.c: Likewise.
* linuxthreads/sysdeps/pthread/timer_delete.c: Likewise.
* linuxthreads/sysdeps/pthread/timer_getoverr.c: Likewise.
* linuxthreads/sysdeps/pthread/timer_gettime.c: Likewise.
* linuxthreads/sysdeps/pthread/timer_routines.c: Likewise.
* linuxthreads/sysdeps/pthread/timer_settime.c: Likewise.
* linuxthreads/sysdeps/pthread/tst-timer.c: Likewise.
* linuxthreads/sysdeps/s390/pspinlock.c: Likewise.
* linuxthreads/sysdeps/s390/s390-32/pt-machine.h: Likewise.
* linuxthreads/sysdeps/s390/s390-64/pt-machine.h: Likewise.
* linuxthreads/sysdeps/sh/pspinlock.c: Likewise.
* linuxthreads/sysdeps/sh/pt-machine.h: Likewise.
* linuxthreads/sysdeps/sparc/sparc32/pspinlock.c: Likewise.
* linuxthreads/sysdeps/sparc/sparc32/pt-machine.h: Likewise.
* linuxthreads/sysdeps/sparc/sparc32/sparcv9/pspinlock.c: Likewise.
* linuxthreads/sysdeps/sparc/sparc64/pspinlock.c: Likewise.
* linuxthreads/sysdeps/sparc/sparc64/pt-machine.h: Likewise.
* linuxthreads/sysdeps/unix/sysv/linux/bits/local_lim.h: Likewise.
* linuxthreads/sysdeps/unix/sysv/linux/bits/posix_opt.h: Likewise.
* linuxthreads/sysdeps/unix/sysv/linux/bits/sigthread.h: Likewise.
* linuxthreads/sysdeps/unix/sysv/linux/hppa/bits/initspin.h: Likewise.
* linuxthreads/sysdeps/unix/sysv/linux/i386/bits/posix_opt.h: Likewise.
* linuxthreads/tststack.c: Likewise.
* linuxthreads/unload.c: Likewise.
* linuxthreads/weaks.c: Likewise.
* linuxthreads/wrapsyscall.c: Likewise.
* malloc/arena.c: Likewise.
* malloc/hooks.c: Likewise.
* malloc/malloc.c: Likewise.
* posix/glob/Makefile.ami: Likewise.
* posix/glob/Makefile.in: Likewise.
* stdlib/gmp-impl.h: Likewise.
* stdlib/gmp.h: Likewise.
* sysdeps/generic/dl-iteratephdr-static.c: Likewise.
* sysdeps/generic/strnlen.c: Likewise.
* sysdeps/mach/hurd/powerpc/bits/sigcontext.h: Likewise.
* sysdeps/mach/hurd/recvmsg.c: Likewise.
* sysdeps/mach/hurd/sendmsg.c: Likewise.
* sysdeps/mach/hurd/spawni.c: Likewise.
* sysdeps/mach/powerpc/machine-sp.h: Likewise.
* sysdeps/mach/powerpc/sysdep.h: Likewise.
* sysdeps/mach/powerpc/thread_state.h: Likewise.
* sysdeps/unix/bsd/bsd4.4/bits/socket.h: Likewise.
* sysdeps/unix/sysv/linux/ia64/dl-iteratephdr-static.c: Likewise.
* sysdeps/x86_64/gmp-mparam.h: Likewise.
2002-08-26 22:40:48 +00:00
Ulrich Drepper
52e1b618f4
Update.
...
2002-07-03 Jakub Jelinek <jakub@redhat.com>
* stdio-common/printf_fp.c (__printf_fp.c): If _FPIO_CONST_SHIFT is
non-zero, adjust exponent.
* sysdeps/ieee754/ldbl-128/s_erfl.c (__erfl, erfl, __erfcl, erfcl):
Remove NO_LONG_DOUBLE aliases.
* sysdeps/ieee754/ldbl-128/s_expm1l.c (__expm1l, expm1l): Likewise.
* sysdeps/ieee754/ldbl-128/s_log1pl.c (__log1pl, log1pl): Likewise.
(__log1pl): Raise divide by zero and invalid exceptions when needed.
* sysdeps/ieee754/ldbl-128/e_powl.c (__ieee754_powl): Special case
1**y and -1**+-Inf.
* sysdeps/ieee754/ldbl-128/ldbl2mpn.c (__mpn_extract_long_double):
Fix BITS_PER_MP_LIMB 32 extraction.
* sysdeps/ieee754/ldbl-128/e_log2l.c (__ieee754_log2l): Don't raise
exceptions for qNaNs.
* sysdeps/ieee754/ldbl-128/e_log10l.c (__ieee754_log10l): Likewise.
* sysdeps/ieee754/ldbl-128/e_lgammal_r.c (__ieee754_lgamma_r):
Raise exceptions when needed. Don't recurse unnecessarily.
Special case 1.0L and 2.0L arguments to avoid -0.0L as result.
* sysdeps/ieee754/ldbl-128/e_j0l.c (__ieee754_y0l): Don't raise
exceptions for qNaNs.
* sysdeps/ieee754/ldbl-128/s_remquol.c (__remquol): Make qs 64-bit
to fix *quo return value sign.
* sysdeps/ieee754/ldbl-128/e_gammal_r.c (__ieee754_gamma_r): Special
case -Inf argument.
* soft-fp/op-4.h (_FP_FRAC_CLZ_4): Fix a pasto.
2002-07-01 Jakub Jelinek <jakub@redhat.com>
* libio/tst-eof.c (do_test): Remove unused ch and tm variables.
* iconvdata/iso-2022-jp-3.c (EMIT_SHIFT_TO_INIT): Kill warnings if
-DNDEBUG.
2002-07-11 05:55:13 +00:00
Andreas Jaeger
4a568eb978
128-bit long double implementation of e_log2.
2001-11-10 10:38:27 +00:00
