-- 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 0.1.0.1

module Data.Eigen.Util

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

-- | Adds a list of given rows with a list weights to the first row in the
--   list. - Note that first value in the list of weights is ignored
rowsAdd :: Elem a b => [Int] -> [a] -> Matrix a b -> Matrix a b

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

-- | Adds a list of given columns with a list weights to the first column
--   in the list. - Note that first value in the list of weights is ignored
colsAdd :: Elem a b => [Int] -> [a] -> 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