tree 243f4326e5cee92d912dee65aeeb55f0a81cdc70
parent 6ea169446634cd8be66b34220a56860223c9058f
author Nigel Tao <nigeltao@golang.org> 1567071853 +1000
committer Nigel Tao <nigeltao@golang.org> 1567121726 +0000

ccitt: speed up the highBits function

Also fix s/PackBits/HighBits/ typos in reader_test.go.

name        old time/op  new time/op  delta
HighBits-4  34.8µs ± 2%  11.0µs ± 1%  -68.45%  (p=0.008 n=5+5)

Change-Id: Id5af14536edb66c5313b6fcf711872e5025cb503
Reviewed-on: https://go-review.googlesource.com/c/image/+/191941
Run-TryBot: Nigel Tao <nigeltao@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Horst Rutter <hhrutter@gmail.com>
Reviewed-by: Benny Siegert <bsiegert@gmail.com>