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The Go programming language
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807ce2719c
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Brad Fitzpatrick 807ce2719c jpeg: speed up RGBA encoding ~%50 
Avoids image.At(), color.RGBA(), opposing 8 bit shifts,
and min function calls in a loop.  Not as pretty as before,
but the pure version is still there to revert back to
later if/when the compiler gets better.

before (best of 5)
jpeg.BenchmarkEncodeRGBOpaque   50   64781360 ns/op   18.97 MB/s

after (best of 5)
jpeg.BenchmarkEncodeRGBOpaque   50   42044300 ns/op   29.23 MB/s

(benchmarked on an HP z600; 16 core Xeon E5520 @ 2.27Ghz)

R=r, r2, nigeltao
CC=golang-dev
https://golang.org/cl/4433088
2011-05-02 07:26:40 -07:00
doc undo CL 4428057 / 19e540fc7d7d 2011-04-29 12:20:31 -07:00
include windows: replace remaining __MINGW32__ instances with _WIN32 2011-02-08 15:42:52 -05:00
lib codereview: various fixes 2011-04-25 12:12:53 -04:00
misc builder: build multiple targets in parallel 2011-04-27 10:12:10 +10:00
src jpeg: speed up RGBA encoding ~%50 2011-05-02 07:26:40 -07:00
test gc: preserve original expression for errors 2011-04-28 13:14:35 -04:00
.hgignore syscall: add Mmap, Munmap on Linux, FreeBSD, OS X 2011-04-06 17:52:02 -04:00
.hgtags tag weekly.2011-04-27 2011-04-28 16:38:01 +10:00
AUTHORS A+C: Vincent Vanackere (individual CLA) 2011-04-21 10:09:53 -04:00
CONTRIBUTORS CONTRIBUTORS: add Dmitriy Vyukov (Google CLA) 2011-04-21 12:09:19 -04:00
favicon.ico add a favicon plus a couple of hi-res versions of gordon 2009-10-26 10:13:07 -07:00
LICENSE LICENSE: separate, change PATENTS text 2010-12-06 16:31:59 -05:00
PATENTS LICENSE: separate, change PATENTS text 2010-12-06 16:31:59 -05:00
README build: update, streamline documentation for new $GOBIN 2010-08-24 20:00:50 -04:00
robots.txt godoc: serve robots.txt raw 2011-02-19 05:46:20 +11:00

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.