Copyright	(c) Herbert Valerio Riedel 2014
License	BSD3
Maintainer	ghc-devs@haskell.org
Stability	provisional
Portability	non-portable (GHC Extensions)
Safe Haskell	None
Language	Haskell2010

GHC.Integer

Contents

Construct Integers
Conversion to other integral types
Helpers for RealFloat type-class operations
Arithmetic operations
Comparison predicates
- Int#-boolean valued versions of comparison predicates
Bit-operations
Hashing

Description

The Integer type.

This module exposes the portable Integer API. See GHC.Integer.GMP.Internals for the integer-gmp-specific internal representation of Integer as well as optimized GMP-specific operations.

Synopsis

data Integer
mkInteger :: Bool -> [Int] -> Integer
smallInteger :: Int# -> Integer
wordToInteger :: Word# -> Integer
integerToWord :: Integer -> Word#
integerToInt :: Integer -> Int#
encodeFloatInteger :: Integer -> Int# -> Float#
floatFromInteger :: Integer -> Float#
encodeDoubleInteger :: Integer -> Int# -> Double#
decodeDoubleInteger :: Double# -> (#Integer, Int##)
doubleFromInteger :: Integer -> Double#
plusInteger :: Integer -> Integer -> Integer
minusInteger :: Integer -> Integer -> Integer
timesInteger :: Integer -> Integer -> Integer
negateInteger :: Integer -> Integer
absInteger :: Integer -> Integer
signumInteger :: Integer -> Integer
divModInteger :: Integer -> Integer -> (#Integer, Integer#)
divInteger :: Integer -> Integer -> Integer
modInteger :: Integer -> Integer -> Integer
quotRemInteger :: Integer -> Integer -> (#Integer, Integer#)
quotInteger :: Integer -> Integer -> Integer
remInteger :: Integer -> Integer -> Integer
eqInteger :: Integer -> Integer -> Bool
neqInteger :: Integer -> Integer -> Bool
leInteger :: Integer -> Integer -> Bool
gtInteger :: Integer -> Integer -> Bool
ltInteger :: Integer -> Integer -> Bool
geInteger :: Integer -> Integer -> Bool
compareInteger :: Integer -> Integer -> Ordering
eqInteger# :: Integer -> Integer -> Int#
neqInteger# :: Integer -> Integer -> Int#
leInteger# :: Integer -> Integer -> Int#
gtInteger# :: Integer -> Integer -> Int#
ltInteger# :: Integer -> Integer -> Int#
geInteger# :: Integer -> Integer -> Int#
andInteger :: Integer -> Integer -> Integer
orInteger :: Integer -> Integer -> Integer
xorInteger :: Integer -> Integer -> Integer
complementInteger :: Integer -> Integer
shiftLInteger :: Integer -> Int# -> Integer
shiftRInteger :: Integer -> Int# -> Integer
testBitInteger :: Integer -> Int# -> Bool
hashInteger :: Integer -> Int#

Documentation

data Integer Source #

Invariant: Jn# and Jp# are used iff value doesn't fit in S#

Useful properties resulting from the invariants:

```
abs (S# _) <= abs (Jp# _)
```
```
abs (S# _) <  abs (Jn# _)
```

Instances

Eq Integer Source #
Instance details Methods (==) :: Integer -> Integer -> Bool (/=) :: Integer -> Integer -> Bool
Ord Integer Source #
Instance details Methods compare :: Integer -> Integer -> Ordering (<) :: Integer -> Integer -> Bool (<=) :: Integer -> Integer -> Bool (>) :: Integer -> Integer -> Bool (>=) :: Integer -> Integer -> Bool max :: Integer -> Integer -> Integer min :: Integer -> Integer -> Integer

Construct `Integer`s

mkInteger Source #

Arguments

:: Bool	sign of integer (`True` if non-negative)
-> [Int]	absolute value expressed in 31 bit chunks, least significant first (ideally these would be machine-word `Word`s rather than 31-bit truncated `Int`s)
-> Integer