ESP8266 Community Forum

- Tue Nov 24, 2015 7:51 am #34866 Hey guys, i got this error on math.log() http://prntscr.com/969l22 with my NodeMCU. I'm using Esplorer and the firmware is a custom build from http://nodemcu-build.com/. With the following modules http://prntscr.com/96d6yx.

Please Help !

- Tue Nov 24, 2015 2:08 pm #34904 I tryed with an equivalent of logarithm

Code: Select allfunction loge (z,resol)
    --resol: number of iterations in the sum, default 20
    local sum=0
    if (not resol) then resol = 20 end
    for n=0,resol do
        sum = sum + (1/(2*n+1))*((z-1)/(z+1))^(2*n+1)
    end
    return 2*sum
end

But i get this error:

LUA interpreter error detected
stdin:1: attempt to call global 'loge' (a nil value)
stack traceback:
stdin:1: in main chunk