intppty — set interface argument passing properties
funs=intppty() intppty(fun)
integer an interface number (see funptr)
integer vector, vector of interface number (see funptr)
The interface programs may be written in 2 different ways for the mode of function argument passing.
In the first and default way, the arguments are passed by value. With the following syntax:
foo(A,1+2)
the argument associated with A will be passed by value (a copy
of A is made before foo is called, and
the argument associated with 1+2 will be passed by value.
In
the second way arguments may be passed be reference if there are
"named arguments" (no copy of the variable value is
done). intppty(fun) with fun>0 tells Scilab that the
interface with number fun can handle arguments passed by
reference. With the following syntax:
foo(A,1+2)
the argument associated with A will be passed by reference, and
the argument associated with 1+2 will be passed by value.
Warning, declaring that the interface with number
fun can handle arguments passed by reference if it is not the
case should produce unpredictable results.
intppty(fun) with fun<0 suppress this property
for the interface -fun.
intppty() returns the vector of interfaces which handle
arguments passed by reference.
This function may be useful for dynamically loaded interface (see addinter).