intppty

Arguments

fun

integer, an interface number (see funptr)

funs

integer vector, vector of interface number (see funptr)

Description

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).

See Also

• funptr — coding of primitives ( wizard stuff )
• addinter — new functions interface dynamic link at run time.