Portability | GHC |
---|---|
Stability | experimental |
Maintainer | bos@mailrank.com |
Fast, efficient support for converting between double precision floating point values and text.
Although about 15 times faster than plain show
, these functions
are slower than their Text
counterparts, at roughly half the
speed. (This seems to be due to the cost of allocating
ByteString
values via malloc
.)
- toExponential :: Int -> Double -> ByteString
- toFixed :: Int -> Double -> ByteString
- toPrecision :: Int -> Double -> ByteString
- toShortest :: Double -> ByteString
Documentation
toExponential :: Int -> Double -> ByteStringSource
Compute a representation in exponential format with the requested number of digits after the decimal point. The last emitted digit is rounded. If -1 digits are requested, then the shortest exponential representation is computed.
toFixed :: Int -> Double -> ByteStringSource
Compute a decimal representation with a fixed number of digits after the decimal point. The last emitted digit is rounded.
toPrecision :: Int -> Double -> ByteStringSource
Compute precision
leading digits of the given value either in
exponential or decimal format. The last computed digit is rounded.
toShortest :: Double -> ByteStringSource
Compute the shortest string of digits that correctly represent the input number.