logarithm function in nrf51822

[Mostafa]

Hello every one, I'm using nrf51822, for some calculation, I have to use logarithm. is there a possibility to directly use this function by nrf51822? I already applied an approximate method, but I would like to ask if there is a direct log function in the nrf? thanks.

[endnode]

There is no common CPU architecture which would have single instruction for mathematical logarithm function, you always use some library and approximation. Read e.g. here.