| History log of /src/sys/arch/m68k/fpe/fpu_hyperb.c |
| Revision | | Date | Author | Comments |
| 1.17 |
| 05-Dec-2016 |
isaki | Improve the exponential and hyperbolic function's performance
10..100 times faster.
PR port-m68k/51645 from rin@ (and modified by me)
|
| 1.16 |
| 11-Oct-2013 |
isaki | branches: 1.16.6; 1.16.10;
FATANH(-0) is -0, not +0.
This bug was introduced by the mistake of my test program.
Last week, I talked about the probelm (my FATANH(-0) returns +0 ?)
by NetBSD seminar at Open Source Conference 2013 Hiroshima,
and tsutsui@ confirmed that returns -0.
|
| 1.15 |
| 20-Apr-2013 |
isaki | branches: 1.15.4;
Support sinh(-0.0) and tanh(-0.0).
|
| 1.14 |
| 20-Apr-2013 |
isaki | Clean up some useless codes.
|
| 1.13 |
| 20-Apr-2013 |
isaki | Fix typo in comment.
|
| 1.12 |
| 20-Apr-2013 |
isaki | Terminate a loop in EXT_FRACBITS(64bits) instead of FP_NMANT(83bits).
I don't know why the mantissa of the accumulator is 83bits, but 64bits
or more are not affected.
|
| 1.11 |
| 20-Apr-2013 |
isaki | Break a loop off to avoid a long loop even if the precision is not enough.
|
| 1.10 |
| 19-Apr-2013 |
isaki | Implement a hyperbolic arctangent (FATANH).
|
| 1.9 |
| 19-Apr-2013 |
isaki | Introduce the CORDIC algorithm.
o sine and cosine (e.g., FSIN, FCOS and FSINCOS instructions) is now
calculated in the CORDIC instead of Taylor expansion.
o tangent (FTAN) is not touched from a viewpoint of the code size.
o The CORDIC is applicable for hyperbolic functions (e.g., FSINH,
FCOSH, FTANH instructions), but I didn't use it because its working
range is poor.
o The CORDIC is also usable for inverse trigonometric functions,
I will commit it at next phase.
o The code size becomes a bit big. I cannot evaluate speed on m68k
for some reasons, but in test on i386 the CORDIC is approximately
100 times faster in sin/cos.
|
| 1.8 |
| 11-Apr-2013 |
isaki | Introduce FPU_CONST_* constants to avoid a magic number.
|
| 1.7 |
| 23-Mar-2013 |
isaki | Remove about updating fpsr. It was introduced by me but obviously
duplicated with fpu_emul_arith().
|
| 1.6 |
| 15-Oct-2011 |
tsutsui | branches: 1.6.2; 1.6.12;
Add hyperboric and trigonometric functions to m68k FPE, written by isaki@.
With these emulations (~4KB text) xeyes on XM6i works better.
Discussed with isaki@ at OSC 2011 Hiroshima.
|
| 1.5 |
| 18-Jul-2011 |
isaki | fix indent. no functional changes.
|
| 1.4 |
| 14-Mar-2009 |
dsl | Change about 4500 of the K&R function definitions to ANSI ones.
There are still about 1600 left, but they have ',' or /* ... */
in the actual variable definitions - which my awk script doesn't handle.
There are also many that need () -> (void).
(The script does handle misordered arguments.)
|
| 1.3 |
| 11-Dec-2005 |
christos | branches: 1.3.78; 1.3.86; 1.3.92;
merge ktrace-lwp.
|
| 1.2 |
| 15-Jul-2003 |
lukem | __KERNEL_RCSID()
|
| 1.1 |
| 03-Nov-1995 |
briggs | branches: 1.1.64;
Still incomplete, but much more complete FPE from Ken Nakata
<kenn@remus.rutgers.edu>. This emulator does not yet emulate
the following functions:
FSINH, FETOXM1, FTANH, FATAN, FASIN, FATANH, FSIN, FTAN,
FETOX, FTWOTOX, FTENTOX, FCOSH, FACOS, FCOS, FSINCOS
It is sufficient, however, to allow programs like df, w, and newfs,
to run to completion with correct results.
Portions of this code were based on the sparc fpe and on initial
work by gwr.
|
| 1.1.64.3 |
| 21-Sep-2004 |
skrll | Fix the sync with head I botched.
|
| 1.1.64.2 |
| 18-Sep-2004 |
skrll | Sync with HEAD.
|
| 1.1.64.1 |
| 03-Aug-2004 |
skrll | Sync with HEAD
|
| 1.3.92.1 |
| 13-May-2009 |
jym | Sync with HEAD.
Commit is split, to avoid a "too many arguments" protocol error.
|
| 1.3.86.1 |
| 28-Apr-2009 |
skrll | Sync with HEAD.
|
| 1.3.78.1 |
| 04-May-2009 |
yamt | sync with head.
|
| 1.6.12.3 |
| 03-Dec-2017 |
jdolecek | update from HEAD
|
| 1.6.12.2 |
| 20-Aug-2014 |
tls | Rebase to HEAD as of a few days ago.
|
| 1.6.12.1 |
| 23-Jun-2013 |
tls | resync from head
|
| 1.6.2.1 |
| 22-May-2014 |
yamt | sync with head.
for a reference, the tree before this commit was tagged
as yamt-pagecache-tag8.
this commit was splitted into small chunks to avoid
a limitation of cvs. ("Protocol error: too many arguments")
|
| 1.15.4.1 |
| 18-May-2014 |
rmind | sync with head
|
| 1.16.10.1 |
| 07-Jan-2017 |
pgoyette | Sync with HEAD. (Note that most of these changes are simply $NetBSD$
tag issues.)
|
| 1.16.6.1 |
| 05-Feb-2017 |
skrll | Sync with HEAD
|
