Scilab Home page | Wiki | Bug tracker | Forge | Mailing list archives | ATOMS | File exchange
Please login or create an account
Change language to: Français - Português - 日本語 - Русский

Please note that the recommended version of Scilab is 6.1.1. This page might be outdated.
See the recommended documentation of this function

Scilab help >> Advanced functions > 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
Scilab Enterprises
Copyright (c) 2011-2017 (Scilab Enterprises)
Copyright (c) 1989-2012 (INRIA)
Copyright (c) 1989-2007 (ENPC)
with contributors
Last updated:
Tue Apr 02 17:36:24 CEST 2013