3a9d0ac3c8
Still to do: details, more testing corner cases. (e.g. negative zero) Includes small cleanups for previous CL. Note: complex division is currently done in the runtime, so the division code here is apparently not yet necessary and also not tested. Seems likely better to open code division and expose the widening/narrowing to optimization. Complex64 multiplication and division is done in wide format to avoid cancellation errors; for division, this also happens to be compatible with pre-SSA practice (which uses a single complex128 division function). It would-be-nice to widen for complex128 multiplication intermediates as well, but that is trickier to implement without a handy wider-precision format. Change-Id: I595a4300f68868fb7641852a54674c6b2b78855e Reviewed-on: https://go-review.googlesource.com/14028 Reviewed-by: Keith Randall <khr@golang.org> |
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