Support QuantityPoint
in rounding functions
#237
Merged
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Includes the
round
,floor
, andceil
families.There's more subtlety here than for
Quantity
, because we can haveadditive offsets. However, since these functions all aim to behave like
the standard library, and the standard library always uses floating
point, then it's actually quite simple. The way we handle rounding a
quantity point in different units than it's stored is to first perform
the conversion, then do the rounding. As with quantities, we use
RoundingRep
to make sure we're using a sane floating point type toperform the conversion.
Includes a bunch of new test cases, and doc updates.
Fixes #221.