summary refs log tree commit diff
path: root/sysdeps/ieee754/dbl-64/dla.h
Commit message (Collapse)AuthorAgeFilesLines
* Update copyright dates with scripts/update-copyrights.Joseph Myers2019-01-011-1/+1
| | | | | | | * All files with FSF copyright notices: Update copyright dates using scripts/update-copyrights. * locale/programs/charmap-kw.h: Regenerated. * locale/programs/locfile-kw.h: Likewise.
* Update copyright dates with scripts/update-copyrights.Joseph Myers2018-01-011-1/+1
| | | | | | | * All files with FSF copyright notices: Update copyright dates using scripts/update-copyrights. * locale/programs/charmap-kw.h: Regenerated. * locale/programs/locfile-kw.h: Likewise.
* Update copyright dates with scripts/update-copyrights.Joseph Myers2017-01-011-1/+1
|
* Use __builtin_fma more in dbl-64 code.Joseph Myers2016-09-301-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | sysdeps/ieee754/dbl-64/dla.h can use a macro DLA_FMS for more efficient double-width operations when fused multiply-subtract is supported. However, this macro is only defined for x86_64, conditional on architecture-specific __FMA4__. This patch makes the code use __builtin_fma conditional on __FP_FAST_FMA, as used elsewhere in glibc. Tested for x86_64, x86 and powerpc. On powerpc (where this is causing fused operations to be used where they weren't previously) I see an increase from 1ulp to 2ulp in the imaginary part of clog10: testing double (without inline functions) Failure: Test: Imaginary part of: clog10 (0x1.7a858p+0 - 0x6.d940dp-4 i) Result: is: -1.2237865208199886e-01 -0x1.f5435146bb61ap-4 should be: -1.2237865208199888e-01 -0x1.f5435146bb61cp-4 difference: 2.7755575615628914e-17 0x1.0000000000000p-55 ulp : 2.0000 max.ulp : 1.0000 Maximal error of real part of: clog10 is : 3 ulp accepted: 3 ulp Maximal error of imaginary part of: clog10 is : 2 ulp accepted: 1 ulp This is actually resulting from atan2 becoming *more* accurate (atan2 (-0x6.d940dp-4, 0x1.7a858p+0) should ideally be -0x1.208cd6e841554p-2 but was -0x1.208cd6e841555p-2 from a powerpc libm built before this change, and is -0x1.208cd6e841554p-2 from a powerpc libm built after this change). Since these functions are not expected to be correctly rounding by glibc's accuracy goals, neither result is a problem, but this does imply that some of this code, although designed to be correctly rounding, is not in fact correctly rounding (possibly because of GCC creating fused operations where the code does not expect it, something we've only disabled for specific functions where it was found to cause large errors). (Of course as previously discussed I think we should remove the slow cases where an error analysis shows this wouldn't increase the errors much above 0.5ulp; it's only functions such as cratan2 that are expected to be correctly rounding, not atan2.) * sysdeps/ieee754/dbl-64/dla.h [__FP_FAST_FMA] (DLA_FMS): Define macro to use __builtin_fma. * sysdeps/x86_64/fpu/dla.h: Remove file.
* Update copyright dates with scripts/update-copyrights.Joseph Myers2016-01-041-1/+1
|
* Remove various ABS macros and replace uses with fabs (or in one case abs)Wilco Dijkstra2015-05-151-12/+14
| | | | which is more efficient on all targets.
* Update copyright dates with scripts/update-copyrights.Joseph Myers2015-01-021-1/+1
|
* Update copyright notices with scripts/update-copyrightsAllan McRae2014-01-011-1/+1
|
* Format floating routines.Ondřej Bílka2013-10-171-43/+43
|
* Update copyright notices with scripts/update-copyrights.Joseph Myers2013-01-021-1/+1
|
* Demystify the magic number 134217729.0Siddhesh Poyarekar2012-12-291-2/+3
| | | | | The number 134217729.0 gets used in various places in e_pow.c but there is no explanation of what that number is. Add that explanation.
* Replace FSF snail mail address with URLs.Paul Eggert2012-02-091-2/+1
|
* Clean up FMA useUlrich Drepper2011-10-231-3/+3
| | | | | The macro's name should reflect that subtraction is being done. And use __builtin_fma, it seems to work after all.
* Clean up last dla.h changeUlrich Drepper2011-10-231-12/+0
|
* Improve DLA_FMA for FMA4Ulrich Drepper2011-10-221-2/+2
|
* Start using fma in the libm implementationUlrich Drepper2011-10-221-52/+67
|
* 2002-08-26 Brian Youmans <3diff@gnu.org>Roland McGrath2002-08-261-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 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.
* 2002-08-20 Brian Youmans <3diff@gnu.org>Roland McGrath2002-08-201-6/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * manual/contrib.texi: Removed licenses, added acknowledgements for contributions by Intel, IBM, Craig Metz. * LICENSES: New file, contains the text of all non-FSF licenses in the distribution that require putting the notice in the accompanying documentation. * README.template, README: Mention LICENSES. * sysdeps/mach/hurd/net/if_ppp.h: Replaced CMU license with a new one modelled on the modern BSD license, per recent letter of permission from CMU. * sysdeps/unix/sysv/linux/net/if_ppp.h: Likewise. * sysdeps/ieee754/dbl-64/MathLib.h: Changed the copyright holder from IBM to FSF, per the recent Software Letter. Changed the distribution terms from GPL to LGPL. * sysdeps/ieee754/dbl-64/asincos.tbl: Added FSF copyright and copying permission notice (Lesser GPL), per recent IBM Software Letter. * sysdeps/ieee754/dbl-64/powtwo.tbl: Likewise. * sysdeps/ieee754/dbl-64/root.tbl: Likewise. * sysdeps/ieee754/dbl-64/sincos.tbl: Likewise. * sysdeps/ieee754/dbl-64/uatan.tbl: Likewise. * sysdeps/ieee754/dbl-64/uexp.tbl: Likewise. * sysdeps/ieee754/dbl-64/ulog.tbl: Likewise. * sysdeps/ieee754/dbl-64/upow.tbl: Likewise. * sysdeps/ieee754/dbl-64/utan.tbl: Likewise. * sysdeps/ieee754/dbl-64/atnat.h: Changed the copyright holder from IBM to FSF, per the recent Software Letter. Corrected the text of the copying permission notice to say Lesser GPL instead of GPL in warranty disclaimer paragraph. * sysdeps/ieee754/dbl-64/atnat2.h: Likewise. * sysdeps/ieee754/dbl-64/branred.h: Likewise. * sysdeps/ieee754/dbl-64/dla.h: Likewise. * sysdeps/ieee754/dbl-64/doasin.h: Likewise. * sysdeps/ieee754/dbl-64/dosincos.h: Likewise. * sysdeps/ieee754/dbl-64/mpa.h: Likewise. * sysdeps/ieee754/dbl-64/mpa2.h: Likewise. * sysdeps/ieee754/dbl-64/mpatan.h: Likewise. * sysdeps/ieee754/dbl-64/mpexp.h: Likewise. * sysdeps/ieee754/dbl-64/mplog.h: Likewise. * sysdeps/ieee754/dbl-64/mpsqrt.h: Likewise. * sysdeps/ieee754/dbl-64/mydefs.h: Likewise. * sysdeps/ieee754/dbl-64/sincos32.h: Likewise. * sysdeps/ieee754/dbl-64/uasncs.h: Likewise. * sysdeps/ieee754/dbl-64/uexp.h: Likewise. * sysdeps/ieee754/dbl-64/ulog.h: Likewise. * sysdeps/ieee754/dbl-64/upow.h: Likewise. * sysdeps/ieee754/dbl-64/urem.h: Likewise. * sysdeps/ieee754/dbl-64/uroot.h: Likewise. * sysdeps/ieee754/dbl-64/usncs.h: Likewise. * sysdeps/ieee754/dbl-64/utan.h: Likewise. * sysdeps/ieee754/dbl-64/branred.c: Corrected the text of the copying permission notice to say Lesser GPL instead of GPL in warranty disclaimer paragraph. * sysdeps/ieee754/dbl-64/doasin.c: Likewise. * sysdeps/ieee754/dbl-64/dosincos.c: Likewise. * sysdeps/ieee754/dbl-64/e_asin.c: Likewise. * sysdeps/ieee754/dbl-64/e_atan2.c: Likewise. * sysdeps/ieee754/dbl-64/e_exp.c: Likewise. * sysdeps/ieee754/dbl-64/e_log.c: Likewise. * sysdeps/ieee754/dbl-64/e_pow.c: Likewise. * sysdeps/ieee754/dbl-64/e_remainder.c: Likewise. * sysdeps/ieee754/dbl-64/e_sqrt.c: Likewise. * sysdeps/ieee754/dbl-64/halfulp.c: Likewise. * sysdeps/ieee754/dbl-64/mpa.c: Likewise. * sysdeps/ieee754/dbl-64/mpatan.c: Likewise. * sysdeps/ieee754/dbl-64/mpatan2.c: Likewise. * sysdeps/ieee754/dbl-64/mpexp.c: Likewise. * sysdeps/ieee754/dbl-64/mplog.c: Likewise. * sysdeps/ieee754/dbl-64/mpsqrt.c: Likewise. * sysdeps/ieee754/dbl-64/mptan.c: Likewise. * sysdeps/ieee754/dbl-64/s_atan.c: Likewise. * sysdeps/ieee754/dbl-64/s_sin.c: Likewise. * sysdeps/ieee754/dbl-64/s_tan.c: Likewise. * sysdeps/ieee754/dbl-64/sincos32.c: Likewise. * sysdeps/ieee754/dbl-64/slowexp.c: Likewise. * sysdeps/ieee754/dbl-64/slowpow.c: Likewise.
* Update.Ulrich Drepper2001-03-121-0/+173
2001-03-11 Ulrich Drepper <drepper@redhat.com> Last-bit accurate math library implementation by IBM Haifa. Contributed by Abraham Ziv <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>. * math/Makefile (dbl-only-routines): New variable. (libm-routines): Add $(dbl-only-routines). * sysdeps/ieee754/dbl-64/e_acos.c: Empty, definition is in e_asin.c. * sysdeps/ieee754/dbl-64/e_asin.c: Replaced with accurate asin implementation. * sysdeps/ieee754/dbl-64/e_atan2.c: Replaced with accurate atan2 implementation. * sysdeps/ieee754/dbl-64/e_exp.c: Replaced with accurate exp implementation. * sysdeps/ieee754/dbl-64/e_lgamma_r.c: Don't use __kernel_sin and __kernel_cos. * sysdeps/ieee754/dbl-64/e_log.c: Replaced with accurate log implementation. * sysdeps/ieee754/dbl-64/e_remainder.c: Replaced with accurate remainder implementation. * sysdeps/ieee754/dbl-64/e_pow.c: Replaced with accurate pow implementation. * sysdeps/ieee754/dbl-64/e_sqrt.c: Replaced with accurate sqrt implementation. * sysdeps/ieee754/dbl-64/k_cos.c: Empty, definition is in s_sin.c. * sysdeps/ieee754/dbl-64/k_sin.c: Empty, definition is in s_sin.c. * sysdeps/ieee754/dbl-64/s_atan.c: Replaced with accurate atan implementation. * sysdeps/ieee754/dbl-64/s_cos.c: Empty, definition is in s_sin.c. * sysdeps/ieee754/dbl-64/s_sin.c: Replaced with accurate sin/cos implementation. * sysdeps/ieee754/dbl-64/s_sincos.c: Rewritten to not use __kernel_sin and __kernel_cos. * sysdeps/ieee754/dbl-64/s_tan.c: Replaced with accurate tan implementation. * sysdeps/ieee754/dbl-64/Dist: Add new non-code files. * sysdeps/ieee754/dbl-64/MathLib.h: New file. * sysdeps/ieee754/dbl-64/asincos.tbl: New file. * sysdeps/ieee754/dbl-64/atnat.h: New file. * sysdeps/ieee754/dbl-64/atnat2.h: New file. * sysdeps/ieee754/dbl-64/branred.c: New file. * sysdeps/ieee754/dbl-64/branred.h: New file. * sysdeps/ieee754/dbl-64/dla.h: New file. * sysdeps/ieee754/dbl-64/doasin.c: New file. * sysdeps/ieee754/dbl-64/doasin.h: New file. * sysdeps/ieee754/dbl-64/dosincos.c: New file. * sysdeps/ieee754/dbl-64/dosincos.h: New file. * sysdeps/ieee754/dbl-64/endian.h: New file. * sysdeps/ieee754/dbl-64/halfulp.c: New file. * sysdeps/ieee754/dbl-64/mpa.c: New file. * sysdeps/ieee754/dbl-64/mpa.h: New file. * sysdeps/ieee754/dbl-64/mpa2.h: New file. * sysdeps/ieee754/dbl-64/mpatan.c: New file. * sysdeps/ieee754/dbl-64/mpatan.h: New file. * sysdeps/ieee754/dbl-64/mpatan2.c: New file. * sysdeps/ieee754/dbl-64/mpexp.c: New file. * sysdeps/ieee754/dbl-64/mpexp.h: New file. * sysdeps/ieee754/dbl-64/mplog.c: New file. * sysdeps/ieee754/dbl-64/mplog.h: New file. * sysdeps/ieee754/dbl-64/mpsqrt.c: New file. * sysdeps/ieee754/dbl-64/mpsqrt.h: New file. * sysdeps/ieee754/dbl-64/mptan.c: New file. * sysdeps/ieee754/dbl-64/mydefs.h: New file. * sysdeps/ieee754/dbl-64/powtwo.tbl: New file. * sysdeps/ieee754/dbl-64/root.tbl: New file. * sysdeps/ieee754/dbl-64/sincos.tbl: New file. * sysdeps/ieee754/dbl-64/sincos32.c: New file. * sysdeps/ieee754/dbl-64/sincos32.h: New file. * sysdeps/ieee754/dbl-64/slowexp.c: New file. * sysdeps/ieee754/dbl-64/slowpow.c: New file. * sysdeps/ieee754/dbl-64/uasncs.h: New file. * sysdeps/ieee754/dbl-64/uatan.tbl: New file. * sysdeps/ieee754/dbl-64/uexp.h: New file. * sysdeps/ieee754/dbl-64/uexp.tbl: New file. * sysdeps/ieee754/dbl-64/ulog.h: New file. * sysdeps/ieee754/dbl-64/ulog.tbl: New file. * sysdeps/ieee754/dbl-64/upow.h: New file. * sysdeps/ieee754/dbl-64/upow.tbl: New file. * sysdeps/ieee754/dbl-64/urem.h: New file. * sysdeps/ieee754/dbl-64/uroot.h: New file. * sysdeps/ieee754/dbl-64/usncs.h: New file. * sysdeps/ieee754/dbl-64/utan.h: New file. * sysdeps/ieee754/dbl-64/utan.tbl: New file. * sysdeps/i386/fpu/branred.c: New file. * sysdeps/i386/fpu/doasin.c: New file. * sysdeps/i386/fpu/dosincos.c: New file. * sysdeps/i386/fpu/halfulp.c: New file. * sysdeps/i386/fpu/mpa.c: New file. * sysdeps/i386/fpu/mpatan.c: New file. * sysdeps/i386/fpu/mpatan2.c: New file. * sysdeps/i386/fpu/mpexp.c: New file. * sysdeps/i386/fpu/mplog.c: New file. * sysdeps/i386/fpu/mpsqrt.c: New file. * sysdeps/i386/fpu/mptan.c: New file. * sysdeps/i386/fpu/sincos32.c: New file. * sysdeps/i386/fpu/slowexp.c: New file. * sysdeps/i386/fpu/slowpow.c: New file. * sysdeps/ia64/fpu/branred.c: New file. * sysdeps/ia64/fpu/doasin.c: New file. * sysdeps/ia64/fpu/dosincos.c: New file. * sysdeps/ia64/fpu/halfulp.c: New file. * sysdeps/ia64/fpu/mpa.c: New file. * sysdeps/ia64/fpu/mpatan.c: New file. * sysdeps/ia64/fpu/mpatan2.c: New file. * sysdeps/ia64/fpu/mpexp.c: New file. * sysdeps/ia64/fpu/mplog.c: New file. * sysdeps/ia64/fpu/mpsqrt.c: New file. * sysdeps/ia64/fpu/mptan.c: New file. * sysdeps/ia64/fpu/sincos32.c: New file. * sysdeps/ia64/fpu/slowexp.c: New file. * sysdeps/ia64/fpu/slowpow.c: New file. * sysdeps/m68k/fpu/branred.c: New file. * sysdeps/m68k/fpu/doasin.c: New file. * sysdeps/m68k/fpu/dosincos.c: New file. * sysdeps/m68k/fpu/halfulp.c: New file. * sysdeps/m68k/fpu/mpa.c: New file. * sysdeps/m68k/fpu/mpatan.c: New file. * sysdeps/m68k/fpu/mpatan2.c: New file. * sysdeps/m68k/fpu/mpexp.c: New file. * sysdeps/m68k/fpu/mplog.c: New file. * sysdeps/m68k/fpu/mpsqrt.c: New file. * sysdeps/m68k/fpu/mptan.c: New file. * sysdeps/m68k/fpu/sincos32.c: New file. * sysdeps/m68k/fpu/slowexp.c: New file. * sysdeps/m68k/fpu/slowpow.c: New file. * iconvdata/gconv-modules: Add a number of alias, mostly for IBM codepages.