-- Hoogle documentation, generated by Haddock
-- See Hoogle, http://www.haskell.org/hoogle/


-- | Some utility functions for haskell-eigen library
--   
--   Please see README.md
@package haskell-eigen-util
@version 0.1.0.0

module Data.Eigen.Util

-- | rowAdd row r1 = k1 * row r1 + k2 * row r2
rowAdd :: Elem a b => (a, Int) -> (a, Int) -> Matrix a b -> Matrix a b

-- | colAdd col c1 = k1 * col c1 + k2 * col c2
colAdd :: Elem a b => (a, Int) -> (a, Int) -> Matrix a b -> Matrix a b

-- | scale a row by a factor
scaleRow :: Elem a b => Int -> a -> Matrix a b -> Matrix a b

-- | scale a column by a factor
scaleCol :: Elem a b => Int -> a -> Matrix a b -> Matrix a b

-- | Alternative implementation of fromList. It accepts a flatten list of
--   elements and number of columns. No tests are performed to check if
--   number of elements in list are sufficient.
fromList' :: Elem a b => Int -> [a] -> Matrix a b

-- | Stack matrices horizontallly
hstack :: Elem a b => [Matrix a b] -> Matrix a b

-- | Stack given matrices vertically. It uses the following property vstack
--   [a, b, c ..] = ( hstack [a',b',c'.. ] )' where M' is transpose of
--   matrix M.
--   
--   TODO: This is computationally inefficient than implementing is
--   directly like hstack.
vstack :: Elem a b => [Matrix a b] -> Matrix a b

-- | delete a row
delRow :: Elem a b => Int -> Matrix a b -> Matrix a b

-- | delete list of given rows
delRows :: Elem a b => [Int] -> Matrix a b -> Matrix a b

-- | delete a column
delCol :: Elem a b => Int -> Matrix a b -> Matrix a b

-- | delete list of given columns
delCols :: Elem a b => [Int] -> Matrix a b -> Matrix a b

-- | Kronecker matric multiplication.
kronecker :: Elem a b => Matrix a b -> Matrix a b -> Matrix a b