Availability:C-language interface function
int PL_set_prolog_flag(const
char *name, int type, ...)Set/create a Prolog flag from C. name is the name of the
affected flag. type is one of the values below, which also
dictates the type of the final argument. The function returns
TRUE on success and FALSE on failure. This
function can be called before PL_initialise(),
making the flag available to the Prolog startup code.
PL_BOOL- Create a boolean (
true or false) flag. The
argument must be an int.
PL_ATOM- Create a flag with an atom as value. The argument must be of type
const char *.
PL_INTEGER- Create a flag with an integer as value. The argument must be of type
intptr_t *.