Made sure symbols are in the correct namespace

SpMatMatrices.cpp

@@ -18,6 +18,8 @@
 #include "SpMat.h"
 #include "SpMatMatrices.h"
 
+namespace MISCMATHS {
+
 /*!
  * Global function that creates and returns a symmetric
  * Toeplitz matrix with dimensions col.Nrows() x col.Nrows() and where the 
@@ -261,3 +263,5 @@ MISCMATHS::SpMat<float> Sparse3DBendingEnergyHessian(const std::vector<unsigned
   delete [] irp; delete [] jcp; delete [] sp;
   return(AtA);
 }
+
+} // End namespace MISCMATHS