OpenSSL::PKey::EC::Point.new

static VALUE ossl_ec_point_initialize(int argc, VALUE *argv, VALUE self)
{
    EC_POINT *point;
    VALUE group_v, arg2;
    const EC_GROUP *group;

    TypedData_Get_Struct(self, EC_POINT, &ossl_ec_point_type, point);
    if (point)
        rb_raise(eEC_POINT, "EC_POINT already initialized");

    rb_scan_args(argc, argv, "11", &group_v, &arg2);
    if (rb_obj_is_kind_of(group_v, cEC_POINT)) {
        if (argc != 1)
            rb_raise(rb_eArgError, "invalid second argument");
        return ossl_ec_point_initialize_copy(self, group_v);
    }

    GetECGroup(group_v, group);
    if (argc == 1) {
        point = EC_POINT_new(group);
        if (!point)
            ossl_raise(eEC_POINT, "EC_POINT_new");
    }
    else {
        if (rb_obj_is_kind_of(arg2, cBN)) {
            point = EC_POINT_bn2point(group, GetBNPtr(arg2), NULL, ossl_bn_ctx);
            if (!point)
                ossl_raise(eEC_POINT, "EC_POINT_bn2point");
        }
        else {
            StringValue(arg2);
            point = EC_POINT_new(group);
            if (!point)
                ossl_raise(eEC_POINT, "EC_POINT_new");
            if (!EC_POINT_oct2point(group, point,
                                    (unsigned char *)RSTRING_PTR(arg2),
                                    RSTRING_LEN(arg2), ossl_bn_ctx)) {
                EC_POINT_free(point);
                ossl_raise(eEC_POINT, "EC_POINT_oct2point");
            }
        }
    }

    RTYPEDDATA_DATA(self) = point;
    rb_ivar_set(self, id_i_group, group_v);

    return self;
}