Availability:C-language interface function
PL_extension in the given module. If module
is
NULL, the predicate is created in the module of the calling
context, or if no context is present in the module user.
The PL_extension type is defined as
typedef struct PL_extension
{ char *predicate_name; /* Name of the predicate */
short arity; /* Arity of the predicate */
pl_function_t function; /* Implementing functions */
short flags; /* Or of PL_FA_... */
} PL_extension;
For details, see PL_register_foreign_in_module(). Here is an example of its usage:
static PL_extension predicates[] = {
{ "foo", 1, pl_foo, 0 },
{ "bar", 2, pl_bar, PL_FA_NONDETERMINISTIC },
{ NULL, 0, NULL, 0 }
};
main(int argc, char **argv)
{ PL_register_extensions_in_module("user", predicates);
if ( !PL_initialise(argc, argv) )
PL_halt(1);
...
}