datenum does not support some string format

[Nelson-numerical-software]

dv = datevec(datenum('10-Mar-2010 16:48:17'));
REF = [2010 3 10 16 48 17];
assert_isequal(dv, REF);

dv = datevec(datenum('Mar.10,2010'));
REF = [2010 3 10 0 0 0];
assert_isequal(dv, REF);