Small update

Author: RaulPPelaez

include/LanczosAlgorithm.h

@@ -83,7 +83,7 @@ namespace lanczos{
 #endif
     /*Maximum number of Lanczos iterations*/
     int max_iter; //<100 in general, increases as needed
-    int iterationHardLimit = 100; //Do not perform more than this iterations
+    int iterationHardLimit = 1000; //Do not perform more than this iterations
     /*Lanczos algorithm auxiliar memory*/
     device_container<real> w; //size N, v in each iteration
     device_container<real> V; //size Nxmax_iter; Krylov subspace base transformation matrix

python/python_wrapper.cpp

@@ -5,7 +5,7 @@
 #include<pybind11/pybind11.h>
 #include<pybind11/numpy.h>
 #include<iostream>
-
+#include<stdexcept>
 using real = lanczos::real;
 
 namespace py = pybind11;
@@ -28,6 +28,9 @@ struct MatrixDotTrampoline: public lanczos::MatrixDot{
       py::array_t<real> Mvp = overridef(py::array_t<real, py::array::c_style>(this->m_size, v, dummy));
       std::copy(Mvp.data(), Mvp.data()+this->m_size, Mv);
     }
+    else{
+      throw std::runtime_error("[PyLanczos] The required dot function was not found in the provided functor.");
+    }
   }
 };