| Safe Haskell | None |
|---|---|
| Language | Haskell98 |
Data.Eigen.SparseMatrix.Mutable
Contents
- data IOSparseMatrix a b where
- IOSparseMatrix :: Elem a b => !(ForeignPtr (CSparseMatrix a b)) -> IOSparseMatrix a b
- type IOSparseMatrixXf = IOSparseMatrix Float CFloat
- type IOSparseMatrixXd = IOSparseMatrix Double CDouble
- type IOSparseMatrixXcf = IOSparseMatrix (Complex Float) (CComplex CFloat)
- type IOSparseMatrixXcd = IOSparseMatrix (Complex Double) (CComplex CDouble)
- new :: Elem a b => Int -> Int -> IO (IOSparseMatrix a b)
- reserve :: Elem a b => IOSparseMatrix a b -> Int -> IO ()
- rows :: Elem a b => IOSparseMatrix a b -> IO Int
- cols :: Elem a b => IOSparseMatrix a b -> IO Int
- innerSize :: Elem a b => IOSparseMatrix a b -> IO Int
- outerSize :: Elem a b => IOSparseMatrix a b -> IO Int
- nonZeros :: Elem a b => IOSparseMatrix a b -> IO Int
- compressed :: Elem a b => IOSparseMatrix a b -> IO Bool
- compress :: Elem a b => IOSparseMatrix a b -> IO ()
- uncompress :: Elem a b => IOSparseMatrix a b -> IO ()
- read :: Elem a b => IOSparseMatrix a b -> Int -> Int -> IO a
- write :: Elem a b => IOSparseMatrix a b -> Int -> Int -> a -> IO ()
- setZero :: Elem a b => IOSparseMatrix a b -> IO ()
- setIdentity :: Elem a b => IOSparseMatrix a b -> IO ()
- resize :: Elem a b => IOSparseMatrix a b -> Int -> Int -> IO ()
- conservativeResize :: Elem a b => IOSparseMatrix a b -> Int -> Int -> IO ()
Mutable SparseMatrix
data IOSparseMatrix a b where Source #
Mutable version of sparse matrix. See SparseMatrix for details about matrix layout.
Constructors
| IOSparseMatrix :: Elem a b => !(ForeignPtr (CSparseMatrix a b)) -> IOSparseMatrix a b |
type IOSparseMatrixXf = IOSparseMatrix Float CFloat Source #
Alias for single precision mutable matrix
type IOSparseMatrixXd = IOSparseMatrix Double CDouble Source #
Alias for double precision mutable matrix
type IOSparseMatrixXcf = IOSparseMatrix (Complex Float) (CComplex CFloat) Source #
Alias for single previsiom mutable matrix of complex numbers
type IOSparseMatrixXcd = IOSparseMatrix (Complex Double) (CComplex CDouble) Source #
Alias for double prevision mutable matrix of complex numbers
new :: Elem a b => Int -> Int -> IO (IOSparseMatrix a b) Source #
Creates new matrix with the given size rows x cols
reserve :: Elem a b => IOSparseMatrix a b -> Int -> IO () Source #
Preallocates space for non zeros. The matrix must be in compressed mode.
Matrix properties
cols :: Elem a b => IOSparseMatrix a b -> IO Int Source #
Returns the number of columns of the matrix
innerSize :: Elem a b => IOSparseMatrix a b -> IO Int Source #
Returns the number of rows (resp. columns) of the matrix if the storage order column major (resp. row major)
outerSize :: Elem a b => IOSparseMatrix a b -> IO Int Source #
Returns the number of columns (resp. rows) of the matrix if the storage order column major (resp. row major)
Matrix compression
compressed :: Elem a b => IOSparseMatrix a b -> IO Bool Source #
Returns whether this matrix is in compressed form.
compress :: Elem a b => IOSparseMatrix a b -> IO () Source #
Turns the matrix into the compressed format.
uncompress :: Elem a b => IOSparseMatrix a b -> IO () Source #
Turns the matrix into the uncompressed mode.
Accessing matrix data
read :: Elem a b => IOSparseMatrix a b -> Int -> Int -> IO a Source #
Reads the value of the matrix at position i, j.
This function returns Scalar(0) if the element is an explicit zero.
write :: Elem a b => IOSparseMatrix a b -> Int -> Int -> a -> IO () Source #
Writes the value of the matrix at position i, j.
This function turns the matrix into a non compressed form if that was not the case.
This is a O(log(nnz_j)) operation (binary search) plus the cost of element insertion if the element does not already exist.
Cost of element insertion is sorted insertion in O(1) if the elements of each inner vector are inserted in increasing inner index order, and in O(nnz_j) for a random insertion.
setZero :: Elem a b => IOSparseMatrix a b -> IO () Source #
Removes all non zeros but keep allocated memory
setIdentity :: Elem a b => IOSparseMatrix a b -> IO () Source #
Sets the matrix to the identity matrix
Changing matrix shape
resize :: Elem a b => IOSparseMatrix a b -> Int -> Int -> IO () Source #
Resizes the matrix to a rows x cols matrix and initializes it to zero.
conservativeResize :: Elem a b => IOSparseMatrix a b -> Int -> Int -> IO () Source #
Resizes the matrix to a rows x cols matrix leaving old values untouched.