b4b2ddb867
The existing implementation uses code written in Go to implement Sqrt; this adds the assembler to use the sqrt instruction for Power and makes the necessary changes to allow it to be inlined. The following tests showed this relative improvement: benchmark delta BenchmarkSqrt -97.91% BenchmarkSqrtIndirect -96.65% BenchmarkSqrtGo -35.93% BenchmarkSqrtPrime -96.94% Fixes #14349 Change-Id: I8074f4dc63486e756587564ceb320aca300bf5fa Reviewed-on: https://go-review.googlesource.com/19515 Reviewed-by: Minux Ma <minux@golang.org> |
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The Go Programming Language
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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 file). 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-source.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
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