Gregory Nutt
986c568d34
Correct file header comments
2016-08-07 10:04:02 -06:00
Gregory Nutt
4daa553328
lib_asinl.c edited online with Bitbucket. Add missing # on endif. Noted by David Alessio.
2016-07-31 16:47:25 +00:00
David S. Alessio
c145159c6b
This commit fixes the following libc/math issues:
...
1) asin[f l]() use Newton’s method to converge on a solution. But Newton’s method converges very slowly (> 500,000 iterations) for values of x close to 1.0; and, in the case of asinl(), sometimes fails to converge (loops forever). The attached patch uses an trig identity for values of x > sqrt(2). The resultant functions converge in no more than 5 iterations, 6 for asinl().
2) The NuttX erf[f l]() functions are based on Chebyshev fitting to a good guess. The problem there’s a bug in the implementation that causes the functions to blow up with x near -3.0. This patch fixes that problem. It should be noted that this method returns the error function erf(x) with fractional error less than 1.2E-07 and that’s fine for the float version erff(), but the same method is used for double and long double version which will yield only slightly better precision. This patch doesn't address the issue of lower precision for erf() and erfl().
3) a faster version of copysignf() for floats is included.
2016-07-30 15:43:56 -06:00
Gregory Nutt
d36d9d61be
Trivial spacing change
2016-07-28 09:34:56 -06:00
Gregory Nutt
2b3bc90ba5
Correct a comment
2016-07-27 09:09:40 -06:00
Pierre-noel Bouteville
d4f3954b35
lib_dumpbuffer: Now prints a large on-stack buffer first to avoid problems when the syslog output is prefixed with time.
2016-07-27 08:40:46 -06:00
Gregory Nutt
fd42f898f6
libc: Add mkfifo() and pipe() to libc CSV file
2016-07-22 11:02:51 -06:00
Gregory Nutt
7370d3171a
Move include/nuttx/lib.h to include/nuttx/lib/lib.h
2016-07-21 14:05:44 -06:00
Gregory Nutt
779d3f98ed
Move include/nuttx/math32.h to include/nuttx/lib/math32.h
2016-07-21 14:00:15 -06:00
Gregory Nutt
23a876ab9c
Move include/nuttx/math.h to include/nuttx/lib/math.h
2016-07-21 13:58:09 -06:00
Gregory Nutt
72a45c82b7
Move include/nuttx/regex.h to include/nuttx/lib/regex.h
2016-07-21 13:42:18 -06:00
Gregory Nutt
ee9c66186c
ramdisk.h moved from include/fs/nuttx/ to include/nuttx/drivers.
2016-07-20 14:02:18 -06:00
Gregory Nutt
4b4dbc79a2
Move driver related prototypes out of include/nuttx/fs/fs.h and into new include/drivers/drivers.h
2016-07-20 13:15:37 -06:00
Gregory Nutt
e73e82a923
Move prototypes of mkfifo2() from sys/stat.h and pipe2() from unistd.h. They are non-standard and should not be in such a public place. They are not in include/nuttx/fs/fs.h (which isn't a great place either).
2016-07-20 11:57:18 -06:00
Gregory Nutt
b28fa8a609
Move pipe() and mkpipe() to nuttx/libc. Change syscalls to pipe2() and mkfifo2()
2016-07-19 14:15:26 -06:00
Gregory Nutt
5a35abb488
Improve some comments
2016-07-17 08:31:02 -06:00
Gregory Nutt
07e20479ad
/dev/random: Add configuration option to use the congruential PRNG.
2016-07-17 07:56:25 -06:00
Gregory Nutt
ffd3a31649
Rename lib_rand.c to lib_srand.c
2016-07-17 07:11:09 -06:00
Gregory Nutt
95555a0199
PTY: Add ioctls to support locking and unlocking of the slave. LIBC: Add implementation of unlockpt()
2016-07-15 09:39:33 -06:00
Gregory Nutt
6139860c0b
PTY: Added PTY IOCTL command definitions. Add support for TIOCGPTN. LIB: Implement ptsname() and ptsname_r()
2016-07-15 08:33:47 -06:00
David Alessio
912ad2d345
Fix bug in logf() algorithm that caused erroneous INFINITY results.
2016-07-14 20:15:37 -06:00
Gregory Nutt
96edfdb4c7
libm: Fix/improve range checks in lib_expi() and lib_expif().
2016-07-12 09:59:10 -06:00
Gregory Nutt
3bc504b685
Per comment from David Alession: M_E128 will never be used since it is greater than FLT_MAX.
2016-07-12 09:59:08 -06:00
Gregory Nutt
dfe8596e53
Cosmetic
2016-07-11 14:15:34 -06:00
Gregory Nutt
f9d4b50207
If there are no streams, let printf() fall back to use syslog() for output.
2016-07-11 13:52:21 -06:00
Gregory Nutt
29eae10232
lib_expi/f(): Exponental table should be 'const'. Dimension was wrong for float version.
2016-07-11 13:53:31 -06:00
Gregory Nutt
6a081e118d
Add guess at missing lib_libexpif.c file
2016-07-11 13:43:43 -06:00
David Alessio
261358f1f5
This change should significantly improve the performance of single precision floating point math library functions. The vast majority of changes have to do with preventing the compiler from needlessly promoting floats to doubles, performing the calculation with doubles, only to demote the result to float. These changes only affect the math lib functions that return float.
2016-07-11 07:02:50 -06:00
Gregory Nutt
830af912a1
Add sig_raise()
2016-07-04 09:32:36 -06:00
Gregory Nutt
bde90de12f
Fix libc/zoneinfo build
2016-06-30 16:20:43 -06:00
Gregory Nutt
aa96a1d2ec
Move the TZ/Olson zoneinfo data set from apps/system/zoneinfo to libc/zoneinfo
2016-06-30 15:40:37 -06:00
Gregory Nutt
67ea112767
Update ChangeLog
2016-06-27 13:08:40 -06:00
Gregory Nutt
2a19e16eb0
libc/hex2bin: Move the portable library portion of apps/system/hex2bin to nuttx/libc/hex2bin where it can be shared with the OS internals.
2016-06-27 11:22:38 -06:00
Gregory Nutt
7f16548f57
Replaces last three commits. Does the same thing, but does it in a way that does not change the usage model.
2016-06-21 05:26:08 -06:00
Gregory Nutt
b82743612f
Even the 'unconditional' _alert() macro should be disabled if all debug features are disabled.
2016-06-20 22:38:54 -06:00
Gregory Nutt
505ca542e8
Remove some last traces of lowvsyslog that were missed; Add a SYSLOG emergency channel for handling assertion output more cleanly
2016-06-20 16:11:50 -06:00
Gregory Nutt
2a751068e6
Without lowsyslog() *llerr() is not useful. Eliminate and replace with *err().
2016-06-20 12:44:38 -06:00
Gregory Nutt
43eb04bb8f
Without lowsyslog() *llinfo() is not useful. Eliminate and replace with *info().
2016-06-20 11:59:15 -06:00
Gregory Nutt
d40a473f72
Without lowsyslog() *llwarn() is not useful. Eliminate and replace with *warn().
2016-06-20 09:37:08 -06:00
Gregory Nutt
2b445ddccc
Remove lowsyslog(). The new syslog() includes all of the functionality of lowsyslog(). No longer any need for two interfaces.
2016-06-20 08:57:08 -06:00
Gregory Nutt
fa365e85f5
Update some cmoments
2016-06-20 06:11:22 -06:00
Gregory Nutt
7dd66a4620
Need to pass va_list as a reference to vsyslog. This is because va_list is a structure in some compilers and passing of structures in the NuttX sycalls does not work.
2016-06-19 14:50:00 -06:00
Gregory Nutt
5b2aa7bf99
Remove all traces of CONFIG_SYSLOG
2016-06-19 13:59:43 -06:00
Gregory Nutt
9434d3e945
There is now one-and-only-one copy of syslog_putc. It is in the SYSLOG channel logic and can redirect syslog output as needed. All former syslog_putc versions were renamed and the corresponding SYSLOG device initializaiton now calls syslog_channel()
2016-06-19 13:03:20 -06:00
Gregory Nutt
34f776dce9
Move the OS intensive part of vsyslog and vlowsyslog to drivers/syslog/vsyslog.c and vlowsyslog.c. Also move lib_syslogstrem to drivers/syslog/syslogstream.c
2016-06-19 07:56:24 -06:00
Gregory Nutt
d3b8c03a8a
Fix a few missed changes from *dbg() to *err() and *vdbg() to *info()
2016-06-17 06:00:45 -06:00
Gregory Nutt
28192d3c60
Re-order some conditional compilation; up_interrupt_context() is not generally available to applications.
2016-06-16 20:10:19 -06:00
Gregory Nutt
ea8241027e
syslog() will now automatically redirect output to lowsyslog() if called from an interrupt handler
2016-06-16 19:57:06 -06:00
Gregory Nutt
0c8c7fecf0
Add _ to the beginning of all debug macros to avoid name collisions
2016-06-16 12:33:32 -06:00
Gregory Nutt
24c51ec1ff
Centralize definitions associated with CONFIG_DEBUG_LCD
2016-06-15 11:40:33 -06:00
