Spectral-norm: Change / 2 into * 0.5 to see the impact on nightly testing #19349
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Elliot was curious what would happen if we changed
/ 2[.0]
into* 0.5
in spectral-norm. On my Mac, it looked like a wash, but did turn in the
best time I've seen so far (but Macs are noisy), so checking this in to see
what happens in the nightlies.
While here, I got the comment correct and changed a
0..#n
into0..<n
which is my current preferred form.