spral_matrix_util - Matrix utilities

Purpose

This packages contains assorted utility routines and datatypes for:

• matrix data storage and format conversion

• printing of matrices

Version history

2016-09-07 Version 0.1.0

API still open to redefinition: only documented entries are considered at all “fixed”.

Matrix type codes

integer SPRAL_MATRIX_UNSPECIFIED = 0

User doesn’t wish to specify matrix type, use default behaviour for routine.

integer SPRAL_MATRIX_REAL_RECT = 1

Rectangular real-valued matrix, \(m\ne n\).

integer SPRAL_REAL_UNSYM = 2

Square real-valued unsymmetric matrix, \(m=n\).

integer SPRAL_REAL_SYM_PSDEF = 3

Symmetric real-valued positive-definite matrix.

integer SPRAL_REAL_SYM_INDEF = 4

Symmetric real-valued indefinite matrix.

integer SPRAL_REAL_SKEW = 6

Skew-symmetric real-valued matrix.

integer SPRAL_MATRIX_CPLX_RECT = -1

Rectangular complex-valued matrix, \(m\ne n\).

integer SPRAL_CPLX_UNSYM = -2

Square complex-valued unsymmetric matrix, \(m=n\).

integer SPRAL_CPLX_HERM_PSDEF = -3

Hermitian complex-valued positive-definite matrix.

integer SPRAL_CPLX_SYM_INDEF = -4

Hermitian complex-valued indefinite matrix.

integer SPRAL_CPLX_SYM = -5

Symmetric complex-valued matrix.

integer SPRAL_CPLX_SKEW = -6

Skew-symmetric complex-valued matrix.