Fix dispatch on sparse multiplication

Author: timholy

base/sparse.jl

@@ -7,7 +7,9 @@ using Base.Sort: Forward
 using Base.LinAlg: AbstractTriangular, PosDefException
 
 import Base: +, -, *, \, &, |, $, .+, .-, .*, ./, .\, .^, .<, .!=, ==
-import Base: A_mul_B!, Ac_mul_B, Ac_mul_B!, At_mul_B, At_mul_B!, At_ldiv_B, Ac_ldiv_B, A_ldiv_B!
+import Base: A_mul_B!, Ac_mul_B, Ac_mul_B!, At_mul_B, At_mul_B!
+import Base: A_mul_Bc, A_mul_Bt, Ac_mul_Bc, At_mul_Bt
+import Base: At_ldiv_B, Ac_ldiv_B, A_ldiv_B!
 import Base.LinAlg: At_ldiv_B!, Ac_ldiv_B!
 
 import Base: @get!, acos, acosd, acot, acotd, acsch, asech, asin, asind, asinh,

base/sparse/linalg.jl

@@ -26,11 +26,24 @@ increment{T<:Integer}(A::AbstractArray{T}) = increment!(copy(A))
 ## sparse matrix multiplication
 
 function (*){TvA,TiA,TvB,TiB}(A::SparseMatrixCSC{TvA,TiA}, B::SparseMatrixCSC{TvB,TiB})
+    (*)(sppromote(A, B)...)
+end
+for f in (:A_mul_Bt, :A_mul_Bc,
+          :At_mul_B, :Ac_mul_B,
+          :At_mul_Bt, :Ac_mul_Bc)
+    @eval begin
+        function ($f){TvA,TiA,TvB,TiB}(A::SparseMatrixCSC{TvA,TiA}, B::SparseMatrixCSC{TvB,TiB})
+            ($f)(sppromote(A, B)...)
+        end
+    end
+end
+
+function sppromote{TvA,TiA,TvB,TiB}(A::SparseMatrixCSC{TvA,TiA}, B::SparseMatrixCSC{TvB,TiB})
     Tv = promote_type(TvA, TvB)
     Ti = promote_type(TiA, TiB)
     A  = convert(SparseMatrixCSC{Tv,Ti}, A)
     B  = convert(SparseMatrixCSC{Tv,Ti}, B)
-    A * B
+    A, B
 end
 
 # In matrix-vector multiplication, the correct orientation of the vector is assumed.
@@ -109,6 +122,18 @@ end
 # http://dl.acm.org/citation.cfm?id=355796
 
 (*){Tv,Ti}(A::SparseMatrixCSC{Tv,Ti}, B::SparseMatrixCSC{Tv,Ti}) = spmatmul(A,B)
+for (f, opA, opB) in ((:A_mul_Bt, :identity, :transpose),
+                      (:A_mul_Bc, :identity, :ctranspose),
+                      (:At_mul_B, :transpose, :identity),
+                      (:Ac_mul_B, :ctranspose, :identity),
+                      (:At_mul_Bt, :transpose, :transpose),
+                      (:Ac_mul_Bc, :ctranspose, :ctranspose))
+    @eval begin
+        function ($f){Tv,Ti}(A::SparseMatrixCSC{Tv,Ti}, B::SparseMatrixCSC{Tv,Ti})
+            spmatmul(($opA)(A), ($opB)(B))
+        end
+    end
+end
 
 function spmatmul{Tv,Ti}(A::SparseMatrixCSC{Tv,Ti}, B::SparseMatrixCSC{Tv,Ti};
                          sortindices::Symbol = :sortcols)