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Message Posted: Mon, 21 Jul 2003 @ 18:17:21 GMT

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According to the ANSI standard, "The maximum value of is implementation-defined, but shall not be less than 6" (ISO/IEC 9075-2:1999, Annex B, 15q). This means that you would have to be able to store up to 86,402,000,000 different values (the number of microseconds in a day with 2 leap seconds). This would require at least 37 bits, so it couldn't possibly be smaller than 5 bytes. I'd say 6 bytes is pretty good!

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