Benjamin Valentin
14144030fa
core/bitarithm: use __builtin_clz() for bitarithm_msb()
...
The `clz` instruction pretty much implements getting the most significant bit
in hardware, so use it instead of the software implementation.
This reults in both a reduction in code size as in a speedup:
master:
text data bss dec hex filename
14816 136 2424 17376 43e0 tests/bitarithm_timings/bin/same54-xpro/tests_bitarithm_timings.elf
+ bitarithm_msb: 3529411 iterations per second
this patch:
text data bss dec hex filename
14768 136 2424 17328 43b0 tests/bitarithm_timings/bin/same54-xpro/tests_bitarithm_timings.elf
+ bitarithm_msb: 9230761 iterations per second
2020-08-04 17:50:09 +02:00
8efe5960aa
core: uncrustify
2020-03-30 17:02:08 +02:00
f99bc894de
core: make some formatting uncrustify friendly (or ignore)
2020-03-30 17:00:32 +02:00
PeterKietzmann
0ecaaf021c
core/bitarithm: add explicit 32-bit function
2018-10-08 13:57:21 +02:00
aa57ea5b74
core: instead of cpp-style, use C-style comments
2018-02-06 16:59:58 +01:00
499c1812b2
core/bitarithm: provide multiple implementations for bitarithm_lsb()
2018-01-16 22:55:26 +01:00
Joakim Gebart
13832d8e62
everything: Remove filename from @file Doxygen command
2015-05-22 07:34:41 +02:00
Martine Lenders
0eb2d78dda
doc: use my real name
2015-02-08 18:52:16 +01:00
Oleg Hahm
d34e14424e
Revert "core: faster bitarithm_msb"
...
This reverts commit ed7e233876
2014-11-26 17:20:47 +01:00
Ludwig Ortmann
3ca4f18479
doc: use lgplv2.1-short license header instead of lgpl-short-riot
2014-07-31 22:57:20 +02:00
René Kijewski
ed7e233876
core: faster bitarithm_msb
2014-06-05 20:19:10 +02:00
Oleg Hahm
ef5ec344fd
core: prefix API functions correctly
...
Also changed names for bitarithm functions and rename thread_pid to sched_active_pid.
2014-05-18 08:53:20 +02:00
Ludwig Ortmann
2525920426
remove trailing whitespace and newlines
2014-02-11 18:45:06 +01:00
56ee585c81
update Kaspar's email address
...
kaspar.schleiser@fu-berlin.de is obsolete.
(2nd try, first try was overwritten by some overzealous documenter)
2014-01-28 11:53:19 +01:00
Hauke Petersen
2df82017a8
Fixed doxygen inconsistensies in sys
2013-12-16 15:09:18 +01:00
Hauke Petersen
edcabf7cb6
Fixed a lot of comments by removing tabs and correcting format.
2013-12-16 14:00:33 +01:00
Hauke Petersen
3785fe956b
Fixed doxygen comments, focused on file headers and group definitions
2013-12-16 14:00:24 +01:00
Oleg Hahm
07da7b2d45
reverted 18e97f6dd5
2013-12-09 22:44:53 +01:00
f85adf608f
change my email address
...
kaspar.schleiser@fu-berlin.de will be obsoleted soon. Replace it with
kaspar@schleiser.de , which will (hopefully) stay.
2013-12-04 15:09:56 +01:00
Ludwig Ortmann
d6c213fb47
fix grammar in license header
2013-11-23 13:11:56 +01:00
authmillenon
18e97f6dd5
Use GCC/Clang builtins for bit arithmetics
2013-11-03 15:14:28 +01:00
Oliver Hahm
c8bee9e554
fixed coding style (space after most keywords)
2013-06-24 22:37:35 +02:00
Oliver Hahm
ffeb6f8523
fixed coding conventions (correctly this time)
2013-06-20 18:18:29 +02:00
Oliver Hahm
0d6d8390c0
* updated copyright and license headers in various files
2013-06-18 17:21:38 +02:00
Oliver Hahm
f38f32f6cc
* added support for sht11 for msb-430-common
...
* fixed some jamfile isssues for msb-430
* fixed arch32 detection for scheduler
* changed sht11 driver to be platform independent
2010-10-29 17:32:03 +02:00
91ae1eb6fd
* import from old firekernel repository
2010-09-22 15:10:42 +02:00
