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a278d99026
freebsd-dev/lib
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Bruce Evans a278d99026 Fix and improve some magic numbers for the "medium size" case. 
e_rem_pio2.c:
This case goes up to about 2**20pi/2, but the comment about it said that
it goes up to about 2**19pi/2.

It went too far above 2**pi/2, giving a multiplier fn with 21 significant
bits in some cases.  This would be harmful except for a numerical
accident.  It happens that the terms of the approximation to pi/2,
when rounded to 33 bits so that multiplications by 20-bit fn's are
exact, happen to be rounded to 32 bits so multiplications by 21-bit
fn's are exact too, so the bug only complicates the error analysis (we
might lose a bit of accuracy but have bits to spare).

e_rem_pio2f.c:
The bogus comment in e_rem_pio2.c was copied and the code was changed
to be bug-for-bug compatible with it, except the limit was made 90
ulps smaller than necessary.  The approximation to pi/2 was not
modified except for discarding some of it.

The same rough error analysis that justifies the limit of 2**20pi/2
for double precision only justifies a limit of 2**18pi/2 for float
precision.  We depended on exhaustive testing to check the magic numbers
for float precision.  More exaustive testing shows that we can go up
to 2**28pi/2 using a 53+25 bit approximation to pi/2 for float precision,
with a the maximum error for cosf() and sinf() unchanged at 0.5009
ulps despite the maximum error in rem_pio2f being ~0.25 ulps.  Implement
this.
2008-02-28 16:22:36 +00:00
..
bind One more glue update for BIND 9.4.2 2007-12-02 22:21:30 +00:00
csu The __used (== __attribute__((__used)) ) silences the warning produced 2007-12-04 12:18:43 +00:00
libalias - Bump share library version which were missed in last bump 2007-06-18 18:47:54 +00:00
libarchive Spelling correction, thanks to Joerg Sonnenberger. 2008-02-27 06:16:41 +00:00
libatm Bump library versions in preparation for 7.0. 2007-05-21 02:49:08 +00:00
libautofs Bump library versions in preparation for 7.0. 2007-05-21 02:49:08 +00:00
libbegemot Bump library versions in preparation for 7.0. 2007-05-21 02:49:08 +00:00
libbluetooth Bump library versions in preparation for 7.0. 2007-05-21 02:49:08 +00:00
libbsm Install getaudit_addr(2) and setaudit_addr(2) links to getaudit(2) and 2007-10-19 10:37:34 +00:00
libbsnmp - Bump share library version which were missed in last bump 2007-06-18 18:47:54 +00:00
libbz2 Bump library versions in preparation for 7.0. 2007-05-21 02:49:08 +00:00
libc Replace the use of warnx() with direct output to stderr using _write(). 2008-02-28 04:09:08 +00:00
libc_r Bump library versions in preparation for 7.0. 2007-05-21 02:49:08 +00:00
libcalendar
libcam 2nd and final commit that moves us to CAM_NEW_TRAN_CODE 2006-11-02 00:54:38 +00:00
libcom_err
libcompat Remove California Regent's clause 3, per letter 2007-01-09 01:02:06 +00:00
libcrypt Bump library versions in preparation for 7.0. 2007-05-21 02:49:08 +00:00
libdevinfo Markup fixes. 2006-09-17 21:27:35 +00:00
libdevstat The devstat(3) manpage claims that only <devstat.h> is needed as a 2008-01-31 16:55:12 +00:00
libdisk - Make Disk_Names() behave as documented in libdisk(3): return an array 2008-02-15 21:19:15 +00:00
libedit Merge NetBSD changes, among them: 2007-06-10 19:06:09 +00:00
libelf Document the return type for gelf_fsize(3). 2008-02-04 18:50:28 +00:00
libexpat Bump library versions in preparation for 7.0. 2007-05-21 02:49:08 +00:00
libfetch Use memcpy(3) instead of the BSD-specific bcopy(3). 2008-02-08 09:48:48 +00:00
libftpio Bump library versions in preparation for 7.0. 2007-05-21 02:49:08 +00:00
libgeom Remove parameter names from prototypes to avoid namespace issues. 2007-05-06 10:00:27 +00:00
libgpib Bump library versions in preparation for 7.0. 2007-05-21 02:49:08 +00:00
libgssapi Make sure GSS-API mechanisms are loaded if gss_acquire_cred is called 2007-11-28 08:50:20 +00:00
libipsec Commit IPv6 support for FAST_IPSEC to the tree. 2007-07-01 12:08:08 +00:00
libipx Remove California Regent's clause 3, per letter 2007-01-09 01:02:06 +00:00
libkiconv Bump library versions in preparation for 7.0. 2007-05-21 02:49:08 +00:00
libkse Add missing #include 2008-02-06 23:25:29 +00:00
libkvm Plug memory leaks that is observed when argbuf or argspc is used in the 2008-01-12 00:54:47 +00:00
libmagic Update for the 'file' 4.23 import. 2008-01-13 20:37:19 +00:00
libmd Use unsigned comparisons. Prior to this commit, SHA1_Update and 2007-05-14 05:00:37 +00:00
libmemstat Make pointer argument to kread_string() const since the kernel structure 2007-05-21 18:16:04 +00:00
libmilter Switch libmilter from select(2) to poll(2) so milters are not limited 2008-02-17 05:14:47 +00:00
libmp Bump library versions in preparation for 7.0. 2007-05-21 02:49:08 +00:00
libncp Bump library versions in preparation for 7.0. 2007-05-21 02:49:08 +00:00
libnetgraph Bump library versions in preparation for 7.0. 2007-05-21 02:49:08 +00:00
libngatm Bump library versions in preparation for 7.0. 2007-05-21 02:49:08 +00:00
libopie Bump library versions in preparation for 7.0. 2007-05-21 02:49:08 +00:00
libpam Adjust for OpenPAM Hydrangea. 2007-12-21 12:00:16 +00:00
libpcap Update for libpcap 0.9.8 import 2007-10-16 02:10:44 +00:00
libpmc Correct a typo. 2008-02-03 06:04:38 +00:00
libradius Bump library versions in preparation for 7.0. 2007-05-21 02:49:08 +00:00
librpcsvc set WARNS to 1: with WARNS=2 an aliasing error in a file generated by 2008-02-05 20:03:45 +00:00
librt Enable symbol versioning by default. Use WITHOUT_SYMVER to disable it. 2007-05-13 14:12:40 +00:00
libsbuf
libsdp Fix bug in handling SDP continuation state. 2007-11-16 15:13:12 +00:00
libsm New files in sendmail 8.14.1 2007-04-09 01:45:30 +00:00
libsmb Bump library versions in preparation for 7.0. 2007-05-21 02:49:08 +00:00
libsmdb
libsmutil
libstand Fix logical bug in the bzip2 reading code, which results in bogus EIO 2007-12-18 01:50:49 +00:00
libtacplus Bump library versions in preparation for 7.0. 2007-05-21 02:49:08 +00:00
libtelnet Stop enforcing dependencies between MK_* options at Makefile level. 2006-07-31 13:29:36 +00:00
libthr _pthread_mutex_isowned_np(): use a more reliable method; the current code 2008-02-14 12:37:58 +00:00
libthread_db Add arm support in libthread_db. 2007-11-17 21:27:53 +00:00
libufs Add a berase() function which uses ioctl(DIOCGDELETE) to erase a slab 2007-12-16 18:02:37 +00:00
libugidfw Bump library versions in preparation for 7.0. 2007-05-21 02:49:08 +00:00
libusbhid Bump library versions in preparation for 7.0. 2007-05-21 02:49:08 +00:00
libutil Put back the openpty(3) and ptsname(3) fixes but don't disable ptsname(3) 2008-01-15 15:36:23 +00:00
libvgl Bump library versions in preparation for 7.0. 2007-05-21 02:49:08 +00:00
libwrap Bump library versions in preparation for 7.0. 2007-05-21 02:49:08 +00:00
liby Remove California Regent's clause 3, per letter 2007-01-09 01:02:06 +00:00
libypclnt Bump library versions in preparation for 7.0. 2007-05-21 02:49:08 +00:00
libz Resolve conflicts. 2006-03-23 14:09:21 +00:00
msun Fix and improve some magic numbers for the "medium size" case. 2008-02-28 16:22:36 +00:00
ncurses - Remove duplicate tputs.3 from MLINK. As we use termcap in the bsae, remove 2008-02-13 14:34:39 +00:00
Makefile - Fix setting of MK_GSSAPI option by bsd.own.mk; its value should 2007-12-12 16:39:32 +00:00
Makefile.inc Bump library versions in preparation for 7.0. 2007-05-21 02:49:08 +00:00