vector: benchmark the floating point code path.

Specifically, this commit adds Benchmark.*1024.* functions, and then
gofmt's some other Benchmark functions.

There are existing floating point benchmarks in acc_test.go, but they
have narrower scope. The benchmarks in vector_test.go are closer to
end-to-end benchmarks for the package.

Change-Id: I5b4770bcefa9aa3ed4d4823f78993df7b80c7d87
Reviewed-on: https://go-review.googlesource.com/62130
Reviewed-by: David Symonds <dsymonds@golang.org>
1 file changed