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See the recommended documentation of this function

Scilab help >> Scilab > argn


Returns the number of input/output arguments in a function call

Calling Sequence

[lhs [,rhs] ]=argn()


This function is used inside a function definition. It gives the number of actual inputs arguments (rhs) and output arguments (lhs) passed to the function when the function is called. It is usually used in function definitions to deal with optional arguments.


function concat=myOwnFunction(name, optional)
  if rhs <= 1 then
       optional="my Optional value"
  if rhs == 0 then
       error("Expect at least one argument")
  concat=name+" "+optional

See Also

  • function — opens a function definition
  • varargin — variable numbers of arguments in an input argument list
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Last updated:
Wed Oct 05 12:09:25 CEST 2011