TYPEMAP
Crypt_GCrypt T_PTROBJ_SPECIAL
Crypt_GCrypt_MPI T_PTROBJ_SPECIAL
INPUT
T_PTROBJ_SPECIAL
if (sv_derived_from($arg, \"${(my $ntt=$ntype)=~s/_/::/g;\$ntt}\")) {
IV tmp = SvIV((SV*)SvRV($arg));
$var = ($type) tmp;
} else
croak(\"$var is not of type ${(my $ntt=$ntype)=~s/_/::/g;\$ntt}\");
OUTPUT
T_PTROBJ_SPECIAL
sv_setref_pv($arg, \"${(my $ntt=$ntype)=~s/_/::/g;\$ntt}\",
(void *)$var);