Lewis Gaul f890de6294
Fix bug in exp2() (#9999)
* Fix bug in exp2_64 to handle negative values (bad translation from C)

* Apply fix to exp2_32() as well, and modify comment on musl behaviour

* Use +%= instead of @addWithOverflow()
2021-10-26 18:57:58 -04:00
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2021-10-26 18:57:58 -04:00