Sub-blockbandwidths for vector (#220)

Author: DanielVandH

Project.toml

@@ -1,6 +1,6 @@
 name = "BlockBandedMatrices"
 uuid = "ffab5731-97b5-5995-9138-79e8c1846df0"
-version = "0.13.3"
+version = "0.13.4"
 
 [deps]
 ArrayLayouts = "4c555306-a7a7-4459-81d9-ec55ddd5c99a"

src/interfaceimpl.jl

@@ -81,3 +81,7 @@ sublayout(::DiagonalLayout{L}, inds::Type{<:NTuple{2,BS}}) where {L,BS<:BlockSli
 blockbandwidths(A::BlockedMatrix{<:Any,<:Any,<:NTuple{2,BlockedOneTo{Int,<:AbstractUnitRange{Int}}}}) = bandwidths(A.blocks)
 blockbandwidths(A::BlockedMatrix{<:Any,<:Diagonal,<:NTuple{2,BlockedOneTo{Int,<:AbstractUnitRange{Int}}}}) = bandwidths(A.blocks)
 subblockbandwidths(A::BlockedMatrix{<:Any,<:Any,<:NTuple{2,BlockedOneTo{Int,<:AbstractUnitRange{Int}}}}) = (0,0)
+
+
+## BlockVector
+subblockbandwidths(a::AbstractBlockVector) = (blocksize(a,1)-1, 0)

test/test_blockbanded.jl

@@ -247,6 +247,11 @@ import BlockBandedMatrices: MemoryLayout, ColumnMajor, BroadcastStyle,
         f(s) = s.block_starts.data
         @inferred(f(s))
     end
+
+    @testset "BlockVector" begin
+        s = BlockVector(1:21, 1:6)
+        @test BlockBandedMatrices.subblockbandwidths(s) == (5, 0)
+    end
 end
 
 end # module