Foreign Functions

A foreign function is declared as

  ffunction(<function-declaration>, <include-file>, <library>)

where the function-declaration must be of the form

  <type> fn(<type>);

where <type> is either int or float. In addition, the input type can be omitted, indicating no input argument. Thus, <function-declaration> means one of the following:

  int fn(int);
  int fn(float);
  float fn(int);
  float fn(float);
  int fn(); // not 'fn(void)'
  float fn();