Update reducedim.jl

base/reducedim.jl

@@ -139,7 +139,7 @@ for (f1, f2, initval, typeextreme) in ((:min, :max, :Inf, :typemax), (:max, :min
 
         if isempty(A1)
             # If the slice is empty just return non-view version as the initial array
-            return copy(A1)
+            return map(f, A1)
         else
             # otherwise use the min/max of the first slice as initial value
             v0 = mapreduce(f, $f2, A1)
@@ -148,9 +148,9 @@ for (f1, f2, initval, typeextreme) in ((:min, :max, :Inf, :typemax), (:max, :min
             Tr = v0 isa T ? T : typeof(v0)
 
             # but NaNs and missing need to be avoided as initial values
-            if (v0 == v0) === false
+            if isnan(v0)
                 # v0 is NaN
-                v0 = $initval
+                v0 = oftype(v0,  $initval)
             elseif isunordered(v0)
                 # v0 is missing or a third-party unordered value
                 Tnm = nonmissingtype(Tr)