Roberto Ierusalimschy d12262068d Small optimizations in range checks ...

Checks of the form '1 <= x && x <= M' were rewritten in the form
'(unsigned)x - 1 < (unsigned)M', which is usually more efficient.
(Other similar checks have similar translations.) Although
some compilers do these optimizations, that does not happen
for all compilers or all cases.

2019-03-27 14:56:10 -03:00

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