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Fix overflow in XEP-0203 delay: if microseconds exceeded 999499, *** was put in the formatted timestamp

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Nathan Bruning 2015-01-21 01:10:41 +01:00
parent 0559edd1cd
commit a983df4848
1 changed files with 5 additions and 1 deletions
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6
src/jlib.erl
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@ -717,7 +717,11 @@ now_to_utc_string({MegaSecs, Secs, MicroSecs}, Precision) ->
{{Year, Month, Day}, {Hour, Minute, Second}} =
calendar:now_to_universal_time({MegaSecs, Secs,
MicroSecs}),
FracOfSec = round(MicroSecs / math:pow(10, 6 - Precision)),
Max = math:pow(10, Precision),
FracOfSec = case round(MicroSecs / math:pow(10, 6 - Precision)) of
Max -> Max - 1; % don't overflow io_lib:format
X -> X
end,
list_to_binary(io_lib:format("~4..0B-~2..0B-~2..0BT~2..0B:~2..0B:~2..0B.~*."
".0BZ",
[Year, Month, Day, Hour, Minute, Second,