float16 type

Author: Joe Petviashvili

src/util.jl

@@ -111,6 +111,8 @@ function typed(::Type{T1},::Type{T2}) where {T1,T2}
         return Float64
     elseif T1 == Float32 || T2 == Float32
         return Float32
+    elseif T1 == Float16 || T2 == Float16
+        return Float16
     elseif T1 == UInt64 || T2 == UInt64
         return UInt64
     elseif T1 == Int64 || T2 == Int64