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strconv.atoi: bug fix #18875 #18925
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strconv.atoi: bug fix #18875 #18925
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bd3f519
first fix implementation
penguindark f0937fd
addeed tests
penguindark 01c6aa3
fmt
penguindark 80e7b0c
replace const ops with them results
penguindark 92f9bed
Merge branch 'master' into atoi_fix
penguindark 9e8b346
small fix on comment
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What is
9
here? Should it not be related to_base
somehow?There was a problem hiding this comment.
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yes,
basem1
stands forbase - 1
that is calculated outside the loop, it is a simple optimization.make operation inside an
if
is always expensive as cpu cycles.basem1
will be stored in a register that will speed up the check in the loop.The 9 is due the fact that if the flow arrive at that line with
sub_count
equal to 0 and the value is greater then 9, it is an illegal char in the sequence.Are all optimizations in order to try to squeeze cpu cycle in the conversions.