sparse * sparse fixes (#55)

* sp*sp: overload for BlasFloat eltype only

* tests: fix special{sparse}*special{sparse}

wrap tested matrices into Special() calll

* SpecialMatrices Tuple

* declare sp*sp for all pairs of special matrices

* cosmetic fix

Co-authored-by: Kristoffer Carlsson <kcarlsson89@gmail.com>

---------

Co-authored-by: Alexey Stukalov <astukalol@seer.bio>
Co-authored-by: Kristoffer Carlsson <kcarlsson89@gmail.com>

src/interface.jl

@@ -24,6 +24,10 @@ SimpleOrSpecialOrAdjMat{T, M} = Union{M,
                                       AdjOrTranspMat{T, <:SpecialMat{T,<:M}},
                                       SpecialMat{T,<:AdjOrTranspMat{T,<:M}}}
 
+const SpecialMatrices = (LowerTriangular, UpperTriangular,
+                   UnitLowerTriangular, UnitUpperTriangular,
+                   Symmetric, Hermitian)
+
 # unwraps matrix A from Adjoint/Transpose transform
 unwrap_trans(A::AbstractMatrix) = A
 unwrap_trans(A::Union{Adjoint, Transpose}) = unwrap_trans(parent(A))
@@ -219,17 +223,45 @@ end
 # sparse * sparse overloads, have to be more specific than
 # the ones in SparseArrays.jl to avoid ambiguity
 
-(*)(A::SparseMat{T}, B::SparseMat{T}) where T =
-    spmatmul_sparse(A, B)
+for Amat in (nothing, SpecialMatrices...), Bmat in (nothing, SpecialMatrices...)
+    Atype = !isnothing(Amat) ? :($Amat{T,S}) : :S
+    tAtype = !isnothing(Amat) ? :($Amat{T, <:AdjOrTranspMat{T, S}}) : nothing
+    Btype = !isnothing(Bmat) ? :($Bmat{T,S}) : :S
+    tBtype = !isnothing(Bmat) ? :($Bmat{T, <:AdjOrTranspMat{T, S}}) : nothing
+
+    @eval (*)(A::$Atype, B::$Btype) where {T <: BlasFloat, S <: SparseMat{T}} =
+        spmatmul_sparse(A, B)
+
+    @eval (*)(A::AdjOrTranspMat{T, $Atype}, B::$Btype) where {T <: BlasFloat, S <: SparseMat{T}} =
+        spmatmul_sparse(A, B)
 
-(*)(A::AdjOrTranspMat{T, S}, B::S) where {T <: BlasFloat, S <: SparseMat{T}} =
-    spmatmul_sparse(A, B)
+    @eval (*)(A::$Atype, B::AdjOrTranspMat{T, $Btype}) where {T <: BlasFloat, S <: SparseMat{T}} =
+        spmatmul_sparse(A, B)
 
-(*)(A::S, B::AdjOrTranspMat{T, S}) where {T <: BlasFloat, S <: SparseMat{T}} =
-    spmatmul_sparse(A, B)
+    @eval (*)(A::AdjOrTranspMat{T, $Atype}, B::AdjOrTranspMat{T, $Btype}) where {T <: BlasFloat, S <: SparseMat{T}} =
+        spmatmul_sparse(A, B)
+
+    if tAtype !== nothing
+        @eval (*)(A::$tAtype, B::$Btype) where {T <: BlasFloat, S <: SparseMat{T}} =
+            spmatmul_sparse(A, B)
+
+        @eval (*)(A::$tAtype, B::AdjOrTranspMat{T, $Btype}) where {T <: BlasFloat, S <: SparseMat{T}} =
+            spmatmul_sparse(A, B)
+    end
 
-(*)(A::AdjOrTranspMat{T, S}, B::AdjOrTranspMat{T, S}) where {T <: BlasFloat, S <: SparseMat{T}} =
-    spmatmul_sparse(A, B)
+    if tBtype !== nothing
+        @eval (*)(A::$Atype, B::$tBtype) where {T <: BlasFloat, S <: SparseMat{T}} =
+            spmatmul_sparse(A, B)
+
+        @eval (*)(A::AdjOrTranspMat{T, $Atype}, B::$tBtype) where {T <: BlasFloat, S <: SparseMat{T}} =
+            spmatmul_sparse(A, B)
+    end
+
+    if tAtype !== nothing && tBtype !== nothing
+        @eval (*)(A::$tAtype, B::$tBtype) where {T <: BlasFloat, S <: SparseMat{T}} =
+            spmatmul_sparse(A, B)
+    end
+end
 
 if VERSION < v"1.11" # in 1.11 these wrappers are already defined in LinearAlgebra
 
@@ -245,9 +277,7 @@ function (\)(A::Union{S, AdjOrTranspMat{T, S}}, B::StridedMatrix{T}) where {T <:
     return ldiv!(C, A, B)
 end
 
-for mat in (LowerTriangular, UpperTriangular,
-            UnitLowerTriangular, UnitUpperTriangular,
-            Symmetric, Hermitian)
+for mat in SpecialMatrices
 
 @eval function (\)(A::Union{$mat{T, S}, AdjOrTranspMat{T, $mat{T, S}}, $mat{T, <:AdjOrTranspMat{T, S}}},
                    x::StridedVector{T}

test/test_BLAS.jl

@@ -728,8 +728,8 @@ end
         n = rand(10:50)
         spf = 0.1 + 0.8 * rand()
 
-        spA = convert_to_Aclass(sparserandn(SPMT{T, IT}, n, n, spf))
-        spB = convert_to_Bclass(sparserandn(SPMT{T, IT}, n, n, spf))
+        spA = Aclass(convert_to_Aclass(sparserandn(SPMT{T, IT}, n, n, spf)))
+        spB = Bclass(convert_to_Bclass(sparserandn(SPMT{T, IT}, n, n, spf)))
         A = convert(Matrix, spA)
         B = convert(Matrix, spB)