fix indexorder for negative strides

Author: Jutho

Project.toml

@@ -1,7 +1,7 @@
 name = "Strided"
 uuid = "5e0ebb24-38b0-5f93-81fe-25c709ecae67"
 authors = ["Lukas Devos <[email protected]>", "Maarten Van Damme <[email protected]>", "Jutho Haegeman <[email protected]>"]
-version = "2.1.0"
+version = "2.1.1"
 
 [deps]
 LinearAlgebra = "37e2e46d-f89d-539d-b4ee-838fcccc9c8e"

src/mapreduce.jl

@@ -428,11 +428,11 @@ function indexorder(strides::NTuple{N,Int}) where {N}
     # returns order such that strides[i] is the order[i]th smallest element of strides, not
     # counting zero strides zero strides have order 1
     return ntuple(Val(N)) do i
-        si = strides[i]
+        si = abs(strides[i])
         si == 0 && return 1
         k = 1
         for s in strides
-            if s != 0 && s < si
+            if s != 0 && abs(s) < si
                 k += 1
             end
         end