error with coder.type​('constant​',value)

When I I get this error when I declare variable 'a' and 'b' as constants and take max(a,b):

Undefined function 'max' for input arguments of type 'coder.Constant'

Is there a way to get round this since 'a' and 'b' are really constants in my code?

Thank you!

[Azzi Abdelmalek]

How did you declare them as a constant?

Answer 1

[Ryan Livingston]

Did you put the line:

a = coder.type('constant',value);

in the code on which you are calling CODEGEN? The function coder.type is intended to be used as an input argument to CODEGEN and not in the M file for which you are generating code.

If you have:

function y = foo(a,b)
  if a < 10
     y = b;
  else
     y = 2*b;
  end

and 'a' is constant, say 10, then you could do:

t = coder.Constant(10);
codegen foo -args {t, single(0)}

to specify that the top-level input, 'a' is constant.