Data.Text.Lazy.Builder.RealFloat

Copyright (c) The University of Glasgow 1994-2002
License see libraries/base/LICENSE
Safe Haskell Trustworthy
Language Haskell2010

Description

Write a floating point value to a Builder.

data FPFormat Source

Control the rendering of floating point numbers.

Constructors

Exponent

Scientific notation (e.g. 2.3e123).
Fixed

Standard decimal notation.
Generic

Use decimal notation for values between 0.1 and 9,999,999, and scientific notation otherwise.
Instances
Instances details
Enum FPFormat
Instance details

Defined in Data.Text.Lazy.Builder.RealFloat

Methods

succ :: FPFormat -> FPFormat Source

pred :: FPFormat -> FPFormat Source

toEnum :: Int -> FPFormat Source

fromEnum :: FPFormat -> Int Source

enumFrom :: FPFormat -> [FPFormat] Source

enumFromThen :: FPFormat -> FPFormat -> [FPFormat] Source

enumFromTo :: FPFormat -> FPFormat -> [FPFormat] Source

enumFromThenTo :: FPFormat -> FPFormat -> FPFormat -> [FPFormat] Source

Read FPFormat
Instance details

Defined in Data.Text.Lazy.Builder.RealFloat

Methods

readsPrec :: Int -> ReadS FPFormat Source

readList :: ReadS [FPFormat] Source

readPrec :: ReadPrec FPFormat Source

readListPrec :: ReadPrec [FPFormat] Source

Show FPFormat
Instance details

Defined in Data.Text.Lazy.Builder.RealFloat

Methods

showsPrec :: Int -> FPFormat -> ShowS Source

show :: FPFormat -> String Source

showList :: [FPFormat] -> ShowS Source

realFloat :: RealFloat a => a -> Builder Source

Show a signed RealFloat value to full precision, using standard decimal notation for arguments whose absolute value lies between 0.1 and 9,999,999, and scientific notation otherwise.

formatRealFloat Source

Arguments

:: RealFloat a
=> FPFormat
-> Maybe Int

Number of decimal places to render.
-> a
-> Builder

Encode a signed RealFloat according to FPFormat and optionally requested precision.

This corresponds to the show{E,F,G}Float operations provided by base's Numeric module.

NOTE: The functions in base-4.12 changed the serialisation in case of a Just 0 precision; this version of text still provides the serialisation as implemented in base-4.11. The next major version of text will switch to the more correct base-4.12 serialisation.

© The University of Glasgow and others
Licensed under a BSD-style license (see top of the page).
https://downloads.haskell.org/~ghc/8.10.2/docs/html/libraries/text-1.2.3.2/Data-Text-Lazy-Builder-RealFloat.html