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-rwxr-xr-x | nuttx/ChangeLog | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/nuttx/ChangeLog b/nuttx/ChangeLog index 5ba2b3b45..8c69d219c 100755 --- a/nuttx/ChangeLog +++ b/nuttx/ChangeLog @@ -10129,3 +10129,15 @@ is received (2015-04-09). * sighold(), sigrelse(), sigignore(), sigset() and sigpause(): New signal handling functions (2015-04-09). + * Fixes to asinh(), atanh(), and sinh(): The 'basic' expansions all + exhibited bad cancellation errors near zero (<= 1E-10). This can be + easily seen e.g. with x = 1E-30, the results are all zero though they + should be extremely close to x. The cutoff values (1E-5, 1E-9) are + chosen so that the next term in the Taylor series is negligible (for + double). Functions could maybe be optimized to use only first term (x) + and a smaller cutoff, just bigger than where the cancellation occurs + (2015-04-09). + * syscall/syscall.csv: Last changes to message queue prototypes did not + make it into call gate logic (2015-04-09). + * syscall/syscall_stublookup.c: Fix some errors that crept in recently + (2015-04-09). |