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LazyBandedMatrices.jl

A Julia package for lazy banded matrices

Build Status

codecov

This package supports lazy banded and block-banded matrices, for example, a lazy multiplication of banded matrices:

julia> using LazyBandedMatrices, LazyArrays, BandedMatrices

julia> A = brand(10,10,1,1);

julia> ApplyMatrix(*, A, A)
10×10 ApplyArray{Float64,2,typeof(*),Tuple{BandedMatrix{Float64,Array{Float64,2},Base.OneTo{Int64}},BandedMatrix{Float64,Array{Float64,2},Base.OneTo{Int64}}}}:
 0.191109   0.379118   0.318899                                      
 0.329746   0.728074   1.12126   0.315324                              
 0.0341854  0.138194   0.95911   0.569674                              
           0.0561613  0.823235  1.19154                               
                     0.542728  0.5989                                
                              0.819362    0.113575                  
                                          0.769278  0.623466         
                                          0.577351  1.05373   0.590068
                                          0.321916  1.7937    1.39854 
                                          0.201658  1.5645    1.3461