math functions usable in rules

[angelosub]

What mathematical functions can be used on rules or in formulas? Log, Cos, Sin it's possible use?
In my particular case I have a necessity to make a log10 of the value read from a sensor.
I have tried Log([test#a]) log([test#a]) log10([test#a]) lg([test#a]) nothing work

[ThomasB]

Misc.ino shows that these operators are allowed in expressions:

Code: Select all

+
-
*
/
^
%

- Thomas