====== Argument ======

In mathematics, an argument of a function is a value provided to obtain the function's result. It is also called an independent variable. 

In the Ecolego an argument is defined as a value sent to a function, or to [[Expression|expressions]] or [[Lookup_table|lookup tables]]. 

Different functions require different amounts of arguments, examples:

  * time() requires no arguments. You need therefore not write the parenthesis, but can call the function using only the name: time. Returns the current simulation time in the simulation time unit.
  * sin() requires one argument - the angle. Returns the trigonometric sine of an angle.
  * abs() requires one argument - the value, or parameter/expression name to return its absolute value. 
  * mod() requires two arguments - the dividend and the divider. The function helps find a remainder after a number (dividend) is divided by another number (divisor).
  * max() requires two, //or more//, arguments and will return the highest of the given arguments.
  * A [[Lookup_table|lookup table]] which has been configured to accept arguments accepts only one argument - the lookup key.
  * An expression which has been configured to acccept arguments requires exactly the number of arguments as the configuration specifies.

===== See also =====

  * [[Function|Function]]
  * [[Expression|Expression]]
  * [[Lookup_table|Lookup table]]