Improve rune2symbol conversion
Change-Id: I431e8ed9f8166cbd5138a46ea5941242573ab219
diff --git a/datok_test.go b/datok_test.go
index 1beb9b7..d3de001 100644
--- a/datok_test.go
+++ b/datok_test.go
@@ -1078,7 +1078,12 @@
// BenchmarkDoubleArrayLarger-4 16 71058822 ns/op 6357860 B/op 2577 allocs/op
// BenchmarkMatrixTransduce-4 36703 31891 ns/op 28944 B/op 17 allocs/op
// 2021-11-10 - rearranged longest match operator
-// BenchmarkDoubleArrayTransduce-4 34522 33210 ns/op 28944 B/op 17 allocs/op
-// BenchmarkDoubleArrayConstruction-4 66990 16012 ns/op 10703 B/op 29 allocs/op
-// BenchmarkDoubleArrayLarger-4 16 62829878 ns/op 6357823 B/op 2576 allocs/op
-// BenchmarkMatrixTransduce-4 36154 32702 ns/op 28944 B/op 17 allocs/op
+// BenchmarkDoubleArrayTransduce-4 34522 33210 ns/op 28944 B/op 17 allocs/op
+// BenchmarkDoubleArrayConstruction-4 66990 16012 ns/op 10703 B/op 29 allocs/op
+// BenchmarkDoubleArrayLarger-4 16 62829878 ns/op 6357823 B/op 2576 allocs/op
+// BenchmarkMatrixTransduce-4 36154 32702 ns/op 28944 B/op 17 allocs/op
+// 2021-12-04 - optimize identity branch
+// BenchmarkDoubleArrayTransduce-4 34903 32255 ns/op 28944 B/op 17 allocs/op
+// BenchmarkDoubleArrayConstruction-4 79394 14561 ns/op 10703 B/op 29 allocs/op
+// BenchmarkDoubleArrayLarger-4 19 60257675 ns/op 6357911 B/op 2577 allocs/op
+// BenchmarkMatrixTransduce-4 35076 30581 ns/op 28944 B/op 17 allocs/op