Function 'daysact' not supported for code generation.

I am using this simple code inside a user defined Matlab function in SIMULINK

NumDays = daysact('20-March','21-March');

But it shows error that "Function 'daysact' not supported for code generation."

Answer 1

[Walter Roberson]

Correct. That function cannot be compiled.

The work-around is to use datetime and subtract.

dt1 = datetime('7-sep-2002','Locale','en_US')

dt1 = datetime
   07-Sep-2002

dt2 = datetime('25-dec-2002','Locale','en_US')

dt2 = datetime
   25-Dec-2002

NumDays = daysact(dt1, dt2) %what you cannot generate code for

NumDays = 109

NumDays2 = days(dt2-dt1)    %replacement function

NumDays2 = 109

Answer 2

[Sean de Wolski]

You should use the newer and recommended datetime / duration classes which support c-codegen:

d = days(datetime(t1)-datetime(t2));