% ADU = WFDB_physadu(SIG_NUM, PHYS);
%
% Converts the value PHYS from physical units to A/D units, based on the gain
% and baseline for input signal number SIG_NUM.
%
% SIG_NUM: Signal number (note: the first signal is signal number 0, etc.)
% PHYS: Signal value(s) in physical units (scalar or vector)
% ADU: Resulting value(s) in A/D units
%
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