changed value type to double in vector and matrix in eigenvalue computations...

changed value type to double in vector and matrix in eigenvalue computations in JacobiNQuadratureRule1D

dune/geometry/quadraturerules/jacobi_n_0.hh

@@ -111,21 +111,18 @@ namespace Dune {
     {
       using std::sqrt;
 
-      typedef DynamicVector<ct> Vector;
-      typedef DynamicMatrix<ct> Matrix;
-
-      // compute the degree of the needed jacobi polymomial
+      // compute the degree of the needed jacobi polynomial
       const int n = degree/2 +1;
 
-      Matrix J(n,n,0);
+      DynamicMatrix<double> J(n,n,0);
 
-      J[0][0] = (ct) -alpha/(2 + alpha);
+      J[0][0] = -double(alpha)/(2 + alpha);
       for(int i=1; i<n; ++i)
       {
-        ct a_i = (ct) (2*i*(i + alpha)) /( (2*i + alpha - 1)*(2*i + alpha) );
-        ct c_i = (ct) (2*i*(i + alpha)) /( (2*i + alpha + 1)*(2*i + alpha) );
+        ct a_i = double(2*i*(i + alpha)) /( (2*i + alpha - 1)*(2*i + alpha) );
+        ct c_i = double(2*i*(i + alpha)) /( (2*i + alpha + 1)*(2*i + alpha) );
 
-        J[i][i] =  (ct) - alpha*alpha /( (2*i + alpha + 2)*(2*i + alpha) );
+        J[i][i] =  -double(alpha*alpha) /( (2*i + alpha + 2)*(2*i + alpha) );
         J[i][i-1] = sqrt(a_i*c_i);
         J[i-1][i] = J[i][i-1];
       }
@@ -135,7 +132,7 @@ namespace Dune {
 
       DynamicMatrixHelp::eigenValuesNonSym(J, eigenValues, &eigenVectors);
 
-      ct mu = (ct) 1/(alpha + 1);
+      double mu = 1.0/(alpha + 1);
 
       QuadratureRule<ct,1> quadratureRule;
       quadratureRule.reserve(n);
@@ -143,7 +140,7 @@ namespace Dune {
       {
         auto&& eV0 = eigenVectors[i][0];
         ct weight =  mu * eV0*eV0;
-        Vector node(1,0.5*eigenValues[i].real() + 0.5);
+        DynamicVector<ct> node(1,0.5*eigenValues[i].real() + 0.5);
 
         // bundle the nodes and the weights
         QuadraturePoint<ct,1> temp(node, weight);