isvalidknauerpumpheadsize(pumpHeadSize)

function response = isvalidknauerpumpheadsize(pumpHeadSize)
% ISVALIDKNAUERPUMPHEADSIZE checks that a pump head size is valid
% response = isvalidknauerpumpheadsize(pumpHeadSize) checks whether a pump
% head size is valid or not.  The current check is valid only for 10 or 50
% as scalars.

% checks arguments
error(nargchk(1, 1, nargin))

% checks the input
response = isequal(pumpHeadSize, 10) || isequal(pumpHeadSize, 50);