sergiotarxz/nuttx
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559 Commits

Author SHA1 Message Date
Gregory Nutt
177239feae sscanf: Use strtof() instead of strtod() if a short floating point value was requested. The should help performance with MCUs with 32-bit FPU support 2016-10-22 13:42:43 -06:00
Gregory Nutt
d08596a653 libc/stdlib: Fix a few minor coding style issues 2016-10-22 13:27:56 -06:00
Gregory Nutt
41137b82fa Add strtold() 2016-10-22 13:02:55 -06:00
Gregory Nutt
9438c42fff strtof: Also make sure that all integer values use in expressions are cast to float 2016-10-20 13:06:55 -06:00
Gregory Nutt
e30a47ba46 libc: Make sure that all constant floating point values have F suffix in strtof() 2016-10-20 13:03:15 -06:00
Gregory Nutt
2b22666554 Forgot to add a file before the last commit 2016-10-20 12:57:27 -06:00
Gregory Nutt
30ab01b1d8 strtof: Add strtof() as simply a compy of strtod with types and limits changed 2016-10-20 12:07:12 -06:00
Gregory Nutt
97b3240737 Minor changes from review of last PR 2016-10-19 11:50:19 -06:00
Gregory Nutt
8039173c9e Merged in david_s5/nuttx/upstream_local_fix_to_greg (pull request #153) 
DO NOT MERGE Until Alan Verifies this -
 2016-10-19 17:44:52 +00:00
David Sidrane
b1ed7910f0 Allows c++ code to compile with or without CONFIG_LIBC_LOCALE 
and will generate a link error if CONFIG_LIBC_LOCALE is not defined
and setlocale is referneced. With CONFIG_LIBC_LOCALE defined
setlocale will act as if MB string is not supported and return
"C" for POSIX. C and ""
 2016-10-19 06:49:19 -10:00
Gregory Nutt
54fd0f0a04 Fix a few more compile issues with the new wide character support 2016-10-19 08:18:46 -06:00
Alan Carvalho de Assis
b852bb3403 Add iswctype, towlower, towupper and wcsftime functions 2016-10-19 07:49:33 -06:00
Gregory Nutt
890a9eb45d Fix a few wide character build issues 2016-10-18 19:11:09 -06:00
Alan Carvalho de Assis
dfdde741e3 C library: Add wctype.h; Move lib_wctype.c to libc/wctype 2016-10-18 18:24:58 -06:00
Alan Carvalho de Assis
4d39b513b5 Add functions wcrtomb, wcslcpy, wcsxfrm, wctob, wctomb, wctype, localeconv, strcoll, strxfrm 2016-10-18 18:15:54 -06:00
Alan Carvalho de Assis
402b876869 Include wchar.h to lib_libvsprintf.c to fix compilation error 2016-10-18 13:32:03 -06:00
Alan Carvalho de Assis
f01c5b79fc C library: Add functions btowc, mbrtowc, mbtowc, wcscmp, wcscoll, wmemmove 2016-10-18 08:05:28 -06:00
Gregory Nutt
0249f3271e C library: Add setlocale to libc.csv 2016-10-17 17:15:19 -06:00
Alan Carvalho de Assis
5354bc1dc7 Add wcslen, wmemchr, wmemcmp, wmemcpy and wmemset to NuttX 2016-10-17 16:02:08 -06:00
Gregory Nutt
84049a19ba C library: Add a dummy setlocale() function to avoid drawing the function from newlib 2016-10-17 09:45:12 -06:00
David Sidrane
7ee82c0168 Fixes sscan %sn where strlen(data) < n 2016-10-15 06:31:35 -10:00
Sebastien Lorquet
aed8a602b8 stdio: Add support for remove() 2016-08-25 08:40:34 -06:00
Gregory Nutt
6a58f046e6 CONFIG_LIBC_DIFFTIME is no longer used, but was still in Kconfig file. Noted by Sebastien Lorquet 2016-08-25 08:09:23 -06:00
Sebastien Lorquet
51596dc457 Updata difftime. Add a version of difftime for the case where the platform does not support type double 2016-08-25 08:00:50 -06:00
Sebastien Lorquet
a626ba5b70 libc/time: This commit adds the difftime() function. Since the function returns a double, I have isolated it in a CONFIG_LIBC_DIFFTIME option (It also depends on the toolchain-dependent CONFIG_HAVE_DOUBLE so is not available on tiny platforms). 2016-08-24 15:43:57 -06:00
Gregory Nutt
67851849da Upate ChangeLog 2016-08-22 10:31:52 -06:00
Gregory Nutt
60b70f7dbb Make xorshift128 re-entrant so that we do do have to suffer the overhad of serialization controls. 2016-08-21 07:47:53 -06:00
Gregory Nutt
757023a909 XorShift128: Add some protection to handle the case where this logic could be called from the interrupt level. 2016-08-20 17:27:41 -06:00
Gregory Nutt
6f833be9d5 Separate XorShift128 PRNG from /dev/urandom and make it generally available. 2016-08-20 11:36:02 -06:00
Gregory Nutt
6e5010e0d0 floor(), floorf(), and floorl(): Fix logic error. Was not correctly handling negative integral value. 2016-08-11 18:21:29 -06:00
Gregory Nutt
155055d564 strtod(): Was not returning endptr on error conditions. 2016-08-11 18:20:25 -06:00
Gregory Nutt
0e35bad987 Update some comments 2016-08-11 10:12:04 -06:00
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