slepc-3.15.0 2021-03-31
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DSMatType

Used to refer to one of the matrices stored internally in DS

Synopsis

typedef enum { DS_MAT_A,
               DS_MAT_B,
               DS_MAT_C,
               DS_MAT_T,
               DS_MAT_D,
               DS_MAT_Q,
               DS_MAT_Z,
               DS_MAT_X,
               DS_MAT_Y,
               DS_MAT_U,
               DS_MAT_VT,
               DS_MAT_W,
               DS_MAT_E0,
               DS_MAT_E1,
               DS_MAT_E2,
               DS_MAT_E3,
               DS_MAT_E4,
               DS_MAT_E5,
               DS_MAT_E6,
               DS_MAT_E7,
               DS_MAT_E8,
               DS_MAT_E9,
               DS_NUM_MAT } DSMatType;

Notes

The matrices preferently refer to
DS_MAT_A  - first matrix of eigenproblem/singular value problem
DS_MAT_B  - second matrix of a generalized eigenproblem
DS_MAT_C  - third matrix of a quadratic eigenproblem
DS_MAT_T  - tridiagonal matrix
DS_MAT_D  - diagonal matrix
DS_MAT_Q  - orthogonal matrix of (right) Schur vectors
DS_MAT_Z  - orthogonal matrix of left Schur vectors
DS_MAT_X  - right eigenvectors
DS_MAT_Y  - left eigenvectors
DS_MAT_U  - left singular vectors
DS_MAT_VT  - right singular vectors
DS_MAT_W  - workspace matrix
DS_MAT_Ex  - extra matrices (x=0,..,9)

All matrices can have space to hold ld x ld elements, except for DS_MAT_T that has space for 3 x ld elements (ld = leading dimension) and DS_MAT_D that has space for just ld elements.

In DSPEP problems, matrices A, B, W can have space for d*ld x d*ld, where d is the polynomial degree, and X can have ld x d*ld.

See Also

DSAllocate(), DSGetArray(), DSGetArrayReal(), DSVectors()

Location: src/sys/classes/ds/../../../../include/slepcds.h
Index of all DS routines
Table of Contents for all manual pages
Index of all manual pages