* 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()
* 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()