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c5964538b7
freebsd-nq/lib
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Bruce Evans c5964538b7 Use a minimax polynomial approximation instead of a Pade rational 
function approximation for the second step.  The polynomial has degree
2 for cbrtf() and 4 for cbrt().  These degrees are minimal for the final
accuracy to be essentially the same as before (slightly smaller).
Adjust the rounding between steps 2 and 3 to match.  Unfortunately,
for cbrt(), this breaks the claimed accuracy slightly although incorrect
rounding doesn't.  Claim less accuracy since its not worth pessimizing
the polynomial or relying on exhaustive testing to get insignificantly
more accuracy.

This saves about 30 cycles on Athlons (mainly by avoiding 2 divisions)
so it gives an overall optimization in the 10-25% range (a larger
percentage for float precision, especially in 32-bit mode, since other
overheads are more dominant for double precision, surprisingly more
in 32-bit mode).
2005-12-19 00:22:03 +00:00
..
bind Finish the removal of threads support in ../config.mk,v 1.15. 2005-11-07 15:22:35 +00:00
csu Fixed profiling of main() for amd64 and i386. This started rotting 2005-10-07 22:13:17 +00:00
libalias
libarchive [mdoc] add missing space before a punctuation type argument. 2005-12-13 17:07:52 +00:00
libatm
libautofs Fix all the spelling mistakes I could find in the man pages for words 2005-07-31 03:30:48 +00:00
libbegemot
libbluetooth
libbsnmp Catch up with the import of bsnmp-1.11. Add a couple of new 2005-10-04 15:02:07 +00:00
libbz2
libc Implement ELF symbol versioning using GNU semantics. This code aims 2005-12-18 19:43:33 +00:00
libc_r - Prefix MUTEX_TYPE_MAX with PTHREAD_ to avoid namespace pollution. 2005-08-19 21:31:42 +00:00
libcalendar
libcam
libcom_err
libcompat
libcrypt
libdevinfo Add __BEGIN_DECLS/__END_DECLS so that this header can be included in C++ 2005-08-31 14:57:39 +00:00
libdevstat Remove an unused variable. 2005-10-04 22:00:35 +00:00
libdisk Fix prototypes. 2005-11-24 10:30:44 +00:00
libedit Merge NetBSD's revision 1.27. This bug can be observed eg. when browsing 2005-12-04 09:34:56 +00:00
libexpat
libfetch Fix misspelling in Poul-Henning Kamp's email address under AUTHORS, from 2005-11-30 04:08:45 +00:00
libform Add missing shared library interdependencies. 2005-11-10 18:07:07 +00:00
libftpio
libgeom Fix prototype. 2005-11-24 10:43:35 +00:00
libgpib
libio
libipsec
libipx
libkiconv - Fix checking range of strings of struct iconv_add_in in libsmb and libkiconv, 2005-08-24 12:38:26 +00:00
libkse o Include <sys/time.h> 2005-11-19 04:47:06 +00:00
libkvm Fix a well duplicated fencepost error that stopped crashdumps being 2005-10-20 05:41:38 +00:00
libmagic Add missing shared library interdependencies. 2005-11-10 18:07:07 +00:00
libmd -mdoc sweep. 2005-11-17 13:00:00 +00:00
libmemstat Tidy up markup and fix two bugs. 2005-11-21 17:18:34 +00:00
libmenu Add missing shared library interdependencies. 2005-11-10 18:07:07 +00:00
libmilter
libmp Add missing shared library interdependencies. 2005-11-10 18:07:07 +00:00
libncp Add missing shared library interdependencies. 2005-11-10 18:07:07 +00:00
libncurses
libnetgraph Recognize all current standard node types. 2005-10-25 20:58:30 +00:00
libngatm
libopie
libpam Commenting out WARNS actually brought it up to 4. 2005-09-28 14:36:16 +00:00
libpanel Add missing shared library interdependencies. 2005-11-10 18:07:07 +00:00
libpcap
libpmc Fix prototypes. 2005-11-24 10:54:47 +00:00
libpthread o Include <sys/time.h> 2005-11-19 04:47:06 +00:00
libradius Add missing shared library interdependencies. 2005-11-10 18:07:07 +00:00
librpcsvc
libsbuf
libsdp
libsm
libsmb Add missing shared library interdependencies. 2005-11-10 18:07:07 +00:00
libsmdb
libsmutil
libstand Fix prototypes. 2005-11-24 11:14:06 +00:00
libtacplus
libtelnet
libthr Update copyright. 2005-12-17 09:42:45 +00:00
libthread_db
libufs minor style.Makefile(5) fixes: 2005-09-26 06:23:43 +00:00
libugidfw
libusbhid Fix prototypes. 2005-11-24 11:26:36 +00:00
libutil Restore the previous state after a FILL operation in properties_read() 2005-11-28 16:30:16 +00:00
libvgl
libwrap
liby
libypclnt
libz
msun Use a minimax polynomial approximation instead of a Pade rational 2005-12-19 00:22:03 +00:00
ncurses Add missing shared library interdependencies. 2005-11-10 18:07:07 +00:00
Makefile Disconnect libc_r from buildworld, it is still kept in the tree to 2005-10-27 03:09:20 +00:00
Makefile.inc