Sets the maximum digital value of signal edfsignal.
edf_set_digital_maximum(edf_handle, edfsignal, dig_max)
: integer containing file handle of the opened bdf/edf-file
: Minimum value is 1
: Usually, the value 32767 is used for EDF+ and 8388607 for BDF+.
This function is optional and can be called only after opening a file in writemode and before the first sample write action.