uBLASDenseMatrix¶
-
class
dolfin.cpp.la.
uBLASDenseMatrix
(*args)¶ Bases:
dolfin.cpp.la.GenericMatrix
This class provides a simple matrix class based on uBLAS. It is a simple wrapper for a uBLAS matrix implementing the GenericMatrix interface.
The interface is intentionally simple. For advanced usage, access the underlying uBLAS matrix and use the standard uBLAS interface which is documented at http://www.boost.org/libs/numeric/ublas/doc/index.htm.
Developer note: specialised member functions must be inlined to avoid link errors.
Overloaded versions
uBLASMatrix()
Create empty matrix
uBLASMatrix(M, N)
Create M x N matrix
uBLASMatrix(A)
Copy constructor
uBLASMatrix(A)
Create matrix from given uBLAS matrix expression
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assign
()¶ Overloaded versions
operator=(A)
Assignment operator
operator=(A)
Assignment operator
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invert
()¶ Compute inverse of matrix
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lump
()¶ Lump matrix into vector m
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mat
()¶ Overloaded versions
mat()
Return reference to uBLAS matrix (const version)
mat()
Return reference to uBLAS matrix (non-const version)
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resize
()¶ Overloaded versions
resize(M, N)
Resize matrix to M x N
resize(z, dim)
Resize vector z to be compatible with the matrix-vector product y = Ax. In the parallel case, both size and layout are important.
- Arguments
- dim (int)
The dimension (axis): dim = 0 –> z = y, dim = 1 –> z = x
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solve
()¶ Solve Ax = b out-of-place using uBLAS (A is not destroyed)
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solve_in_place
()¶ Overloaded versions
solve_in_place(x, b)
Solve Ax = b in-place using uBLAS(A is destroyed)
solve_in_place(X)
General uBLAS LU solver which accepts both vector and matrix right-hand sides
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thisown
¶ The membership flag
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zero
()¶ Overloaded versions
zero()
Set all entries to zero and keep any sparse structure
zero(m, rows)
Set given rows to zero