itpack.h File Reference

Declarations of functions from itpack. More...

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Namespaces
namespace	itk
namespace	itk::fem
namespace	itk::fem::itpack

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Detailed Description

Declarations of functions from itpack.

The following are the common parameters that are used when calling functions. Note: Variables names are consistent with itpack to prevent confusion.

nn Order of linear system a Row pointers used in compressed row storage format m ja Column indices used in compressed row storage format

Parameters:

a	Nonzero entries in compressed row storage format
rhs	Right hand side of linear system
u	Initial guess of solution. holds solution on output
iwksp	Vector of length 3*nn. on output: holds permutation vector, its inverse, and integer workspace
nw	On input: length of wksp, on output: actual amount used
wksp	Vector used for real working space. must be at least nw in length
iparm	Vector of length 12 used to initialize various parameters on input
rparm	Vector of length 12 used to initialize various parameters on input
ierr	Error flag, on output: zero=no error, non-zero=error condition
nz	Number of non-zero entries in matrix
iwork	Vector of length nz. matrix creation workspace
i	Matrix index
j	Matrix index
value	Matrix entry
mode	Type of matrix building
level	Error reporting flag
nout	Error reporting location
ier	Error flag for matrix building

Definition in file itpack.h.

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