From: Ralph Corderoy <ralph@inputplus.co.uk>
Date: Sat, 29 Jul 2017 14:06:11 +0000 (+0100)
Subject: dtimezone(): Explain abs(3) is undefined on INT_MIN.
X-Git-Url: https://diplodocus.org/git/nmh/commitdiff_plain/4a56a28ac439137ba2b71fcb5952b4e4abd1e2fc?ds=inline;hp=4a56a28ac439137ba2b71fcb5952b4e4abd1e2fc

dtimezone(): Explain abs(3) is undefined on INT_MIN.

That's why a negative int is flipped over into unsigned by assuming
two's complement.
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