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This commit is contained in:
Marc Alexander Lehmann 2011-06-14 07:23:46 +00:00
parent 5d7432532f
commit 0c84163e57
1 changed files with 6 additions and 2 deletions
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8
ev.pod
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@ -5050,8 +5050,12 @@ The type C<double> is used to represent timestamps. It is required to
have at least 51 bits of mantissa (and 9 bits of exponent), which is
good enough for at least into the year 4000 with millisecond accuracy
(the design goal for libev). This requirement is overfulfilled by
implementations using IEEE 754, which is basically all existing ones. With
IEEE 754 doubles, you get microsecond accuracy until at least 2200.
implementations using IEEE 754, which is basically all existing ones.
With IEEE 754 doubles, you get microsecond accuracy until at least the
year 2255 (and millisecond accuray till the year 287396 - by then, libev
is either obsolete or somebody patched it to use C<long double> or
something like that, just kidding).
=back