Availability:C-language interface function
int PL_current_prolog_flag(atom_t
name, int type, void *value)Retrieve the value of a Prolog flag from C. name is the name
of the flag as an atom_t
(see current_prolog_flag/2).
type specifies the kind of value to be retrieved, it is one
of the values below. value is a pointer to a location where
to store the value. The user is responsible for making sure this memory
location is of the appropriate size/type (see the returned types below
to determine the size/type). The function returns TRUE
on
success and FALSE
on failure.
PL_ATOM
- Retrieve a flag whose value is an
atom
. The returned value
is an atom handle of type atom_t
.
PL_INTEGER
- Retrieve a flag whose value is an
integer
. The returned
value is an integer of type int64_t
.
PL_FLOAT
- Retrieve a flag whose value is a
float
. The returned value
is a floating point number of type double
.
PL_TERM
- Retrieve a flag whose value is a
term
. The returned value
is a term handle of type term_t
.