bogus::flags Namespace Reference

Flags for compile-time tuning of the behavior of objects such as SparseBlockMatrix. More...

Enumerations
enum	{ NONE = 0, UNCOMPRESSED = 0x1, COL_MAJOR = 0x2, SYMMETRIC = 0x4 }

Detailed Description

Flags for compile-time tuning of the behavior of objects such as SparseBlockMatrix.

Any combination if those is possible, using the 'binary or' ('|') operator.

Enumeration Type Documentation

anonymous enum

Enumerator
NONE	Default value: the matrix will use an uncompressed index, will be row-major, and not symmetric.
UNCOMPRESSED	Use an uncompressed index. This removes some restrictions on the order in which elements can be inserted, but can be less efficient and will dsallow interoperability with other formats such as MKL's BSR. If the matrix can be created in a compressed way, that is with all its elements inserted in order, you probably should not set the UNCOMPRESSED flag. See Also SparseBlockMatrixBase::insert() and SparseBlockMatrixBase::insertBack()
COL_MAJOR	Store and index blocks in a column major way.
SYMMETRIC	Store only half the matrix, or rather the triangular part for which inner <= outer,. outer being the row and inner the column for row-major matrices. Linear algebra operations such as matrix-vector and matrix-matrix multiplication will work just like if the matrix was fully populated, but at a lower memory access cost