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Optimize twos_complement and from_signed_bytes_be #231

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Bond-009 wants to merge 2 commits into rust-num:master from Bond-009:perf

Bond-009 commented Dec 14, 2021

from_signed_bytes_be with a 20 byte negative number	time
Currently	91 ns/iter (+/- 3)
Only twos_complement optimization	88 ns/iter (+/- 2)
This PR	78 ns/iter (+/- 5)

Bond-009 added 2 commits

December 14, 2021 21:46


          Optimize twos_complement

af77c78


          Remove extra alloc in from_signed_bytes_be

d8746da

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