Enable specialization when dividing by scalars (#143)

Author: mtfishman

Project.toml

@@ -1,7 +1,7 @@
 name = "BlockSparseArrays"
 uuid = "2c9a651f-6452-4ace-a6ac-809f4280fbb4"
 authors = ["ITensor developers <support@itensor.org> and contributors"]
-version = "0.7.8"
+version = "0.7.9"
 
 [deps]
 Adapt = "79e6a3ab-5dfb-504d-930d-738a2a938a0e"

src/abstractblocksparsearray/map.jl

@@ -111,9 +111,15 @@ function Base.isreal(a::AnyAbstractBlockSparseArray)
   return @interface interface(a) isreal(a)
 end
 
+# Helps with specialization of block operations by avoiding
+# having anonymous functions constructed inside the map/broadcast
+# code logic.
 function Base.:*(x::Number, a::AnyAbstractBlockSparseArray)
   return map(Base.Fix1(*, x), a)
 end
 function Base.:*(a::AnyAbstractBlockSparseArray, x::Number)
   return map(Base.Fix2(*, x), a)
 end
+function Base.:/(a::AnyAbstractBlockSparseArray, x::Number)
+  return map(Base.Fix2(/, x), a)
+end