| Copyright | (C) 2015 Anselm Jonas Scholl (C) 2023 Julia Longtin |
|---|---|
| License | BSD3 |
| Maintainer | Julia Longtin <Julia.Longtin@gmail.com> |
| Stability | experimental |
| Portability | GHC-specific |
| Safe Haskell | Safe-Inferred |
| Language | Haskell2010 |
Data.Bits.Floating
Description
Functions for performing conversions between floating point values and Integral values, for retrieving the Unit of Least Precision of a floating point value, and for incrementing / decrementing a value by one ULP..
Synopsis
- class (Floating f, Integral w) => FloatingBits f w | f -> w where
- coerceToWord :: f -> w
- coerceToFloat :: w -> f
- nextUp :: f -> f
- nextDown :: f -> f
- ulp :: f -> f
- class ShowFloat f where
- showsFloat :: f -> ShowS
- showFloat :: f -> String
- fromCFloat :: CFloat -> Float
- fromCDouble :: CDouble -> Double
Bitwise operations
class (Floating f, Integral w) => FloatingBits f w | f -> w where Source #
Methods
coerceToWord :: f -> w Source #
Coerce a floating point number to an integral number preserving the bitwise representation.
coerceToFloat :: w -> f Source #
Coerce a integral number to an floating point number preserving the bitwise representation.
Note: It is not always possible to do this. In particular, if we coerce
the bit pattern of a NaN value, we might get a NaN value with a different
bit pattern than we wanted, so it is possible that
coerceToWord (coerceToFloat w) /= w
Return the next floating point value in the direction of +INF. If the argument is NaN, NaN is returned. If the argument is +INF, +INF is returned. If the argument is 0.0, the minimum value greater than 0.0 is returned. If the argument is -INF, -INF is returned.
Return the next floating point value in the direction of -INF. If the argument is NaN, NaN is returned. If the argument is +INF, +INF is returned. If the argument is 0.0, the maximum value smaller than 0.0 is returned. If the argument is -INF, -INF is returned.
Printing
class ShowFloat f where Source #
Minimal complete definition
Methods
showsFloat :: f -> ShowS Source #
Like showFloat, but prepends the value to another string.
showFloat :: f -> String Source #
Convert a float to a string, but show additional information if it is a NaN value.