Add src/getconstindexes.jl

Author: chriselrod

src/getconstindexes.jl

@@ -0,0 +1,9 @@
+@inline second(x) = @inbounds getindex(x, 2)
+@inline third(x) = @inbounds getindex(x, 3)
+@inline fourth(x) = @inbounds getindex(x, 4)
+@inline fifth(x) = @inbounds getindex(x, 5)
+@inline sixth(x) = @inbounds getindex(x, 6)
+@inline seventh(x) = @inbounds getindex(x, 7)
+@inline eighth(x) = @inbounds getindex(x, 8)
+@inline ninth(x) = @inbounds getindex(x, 9)
+