mirror of https://github.com/golang/go.git
dbcdce5866
filterPaeth takes []byte arguments instead of byte arguments, which avoids some redudant computation of the previous pixel in the inner loop. Also eliminate a bounds check in decoding the up filter. benchmark old ns/op new ns/op delta BenchmarkDecodeGray 3139636 2812531 -10.42% BenchmarkDecodeNRGBAGradient 12341520 10971680 -11.10% BenchmarkDecodeNRGBAOpaque 10740780 9612455 -10.51% BenchmarkDecodePaletted 1819535 1818913 -0.03% BenchmarkDecodeRGB 8974695 8178070 -8.88% R=rsc CC=golang-dev https://golang.org/cl/6243061 |
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README
This is the source code repository for the Go programming language.
For documentation about how to install and use Go,
visit http://golang.org/ or load doc/install.html in your web browser.
After installing Go, you can view a nicely formatted
doc/install.html by running godoc --http=:6060
and then visiting http://localhost:6060/doc/install.html.
Unless otherwise noted, the Go source files are distributed
under the BSD-style license found in the LICENSE file.
--
Binary Distribution Notes
If you have just untarred a binary Go distribution, you need to set
the environment variable $GOROOT to the full path of the go
directory (the one containing this README). You can omit the
variable if you unpack it into /usr/local/go, or if you rebuild
from sources by running all.bash (see doc/install.html).
You should also add the Go binary directory $GOROOT/bin
to your shell's path.
For example, if you extracted the tar file into $HOME/go, you might
put the following in your .profile:
export GOROOT=$HOME/go
export PATH=$PATH:$GOROOT/bin
See doc/install.html for more details.