The degree of the polynomial, d, can be set with DSPEPSetDegree(), with the first d+1 extra matrices of the DS defining the matrix polynomial. By default, the polynomial is expressed in the monomial basis, but a different basis can be used by setting the corresponding coefficients via DSPEPSetCoefficients().
The problem is solved via linearization, by building a pencil (A,B) of size p*n and solving the corresponding GNHEP.
| DS_MAT_Ex | - coefficients of the matrix polynomial | |
| DS_MAT_X | - right eigenvectors | |
| DS_MAT_Y | - left eigenvectors | |
| DS_MAT_A | - (workspace) first matrix of the linearization | |
| DS_MAT_B | - (workspace) second matrix of the linearization | |
| DS_MAT_W | - (workspace) right eigenvectors of the linearization | |
| DS_MAT_U | - (workspace) left eigenvectors of the linearization |
| 0 | - QZ iteration on the linearization (_ggev) |