Fixing const iterator

src/Grid/grid_sm.hpp

@@ -108,12 +108,12 @@ struct ite_gpu
 	grid_key_dx<dim,int> start;
 	grid_key_dx<dim,int> stop;
 
-	size_t nblocks()
+	size_t nblocks() const
 	{
 		return wthr.x * wthr.y * wthr.z;
 	}
 
-	size_t nthrs()
+	size_t nthrs() const
 	{
 		return thr.x * thr.y * thr.z;
 	}

src/Space/Shape/Point.hpp

@@ -228,7 +228,7 @@ template<unsigned int dim ,typename T> class Point
 	 * \return the norm of the vector
 	 *
 	 */
-	__device__ __host__ T norm()
+	__device__ __host__ T norm() const
 	{
 		T n = 0.0;