From 8820af82d2fccadb6de7e2623c87e48fb11378c5 Mon Sep 17 00:00:00 2001
From: Andrew Cady <d@jerkface.net>
Date: Sat, 13 Jul 2019 16:25:13 -0400
Subject: remove more old cpp cruft

---
 kiki.cabal                      |   6 +-
 lib/FunctorToMaybe.hs           |   6 -
 lib/Hosts.hs                    |   7 -
 lib/Numeric/Interval.hs         | 754 ----------------------------------------
 lib/Numeric/Interval/Bounded.hs |   4 +-
 lib/TimeUtil.hs                 |   4 -
 6 files changed, 5 insertions(+), 776 deletions(-)
 delete mode 100644 lib/Numeric/Interval.hs

diff --git a/kiki.cabal b/kiki.cabal
index 25b2373..7c57e3d 100644
--- a/kiki.cabal
+++ b/kiki.cabal
@@ -68,7 +68,6 @@ library
                      SSHKey,
                      LengthPrefixedBE,
                      CommandLine,
-                     Numeric.Interval,
                      Numeric.Interval.Bounded,
                      SuperOrd,
                      FunctorToMaybe,
@@ -92,7 +91,7 @@ library
                      deepseq,
                      directory,
                      filepath,
-                     network,
+                     network >= 2.4.0,
                      openpgp-util,
                      pretty-show,
                      process,
@@ -100,7 +99,8 @@ library
                      text,
                      unix,
                      zlib,
-                     time >= 1.5
+                     time >= 1.5,
+                     intervals
 
     Build-Depends:   cryptonite, x509 >=1.6, memory, hourglass
     c-sources: lib/dotlock.c
diff --git a/lib/FunctorToMaybe.hs b/lib/FunctorToMaybe.hs
index b43a27a..9cd26e4 100644
--- a/lib/FunctorToMaybe.hs
+++ b/lib/FunctorToMaybe.hs
@@ -18,14 +18,8 @@
 -- implemented the 'FunctorToMaybe' type class, then 'functorToEither' could be used to
 -- seperate the noise from the work-product.
 --
-{-# LANGUAGE CPP #-}
 module FunctorToMaybe where
 
-#if MIN_VERSION_base(4,6,0)
-#else
-import Control.Monad.Instances()
-#endif
-
 -- | The 'FunctorToMaybe' class genaralizes 'Maybe' in that the
 -- there may be multiple null elements.
 --
diff --git a/lib/Hosts.hs b/lib/Hosts.hs
index 9d6ef92..f0610ad 100644
--- a/lib/Hosts.hs
+++ b/lib/Hosts.hs
@@ -1,9 +1,6 @@
 {-# LANGUAGE CPP                 #-}
 {-# LANGUAGE ScopedTypeVariables #-}
 {-# LANGUAGE OverloadedStrings   #-}
-#if ! MIN_VERSION_network(2,4,0)
-{-# LANGUAGE StandaloneDeriving  #-}
-#endif
 module Hosts
     ( Hosts
     , assignName
@@ -37,10 +34,6 @@ import Control.Monad (mplus)
 import Network.Socket
 import ControlMaybe ( handleIO_ )
 
-#if ! MIN_VERSION_network(2,4,0)
-deriving instance Ord SockAddr
-#endif
-
 inet_pton :: String -> Maybe SockAddr
 inet_pton p = n
  where
diff --git a/lib/Numeric/Interval.hs b/lib/Numeric/Interval.hs
deleted file mode 100644
index df4bc33..0000000
--- a/lib/Numeric/Interval.hs
+++ /dev/null
@@ -1,754 +0,0 @@
-{-# LANGUAGE CPP #-}
-{-# LANGUAGE Rank2Types #-}
-{-# LANGUAGE DeriveDataTypeable #-}
-#if defined(__GLASGOW_HASKELL) && __GLASGOW_HASKELL__ >= 704
-{-# LANGUAGE DeriveGeneric #-}
-#endif
------------------------------------------------------------------------------
--- |
--- Module      :  Numeric.Interval
--- Copyright   :  (c) Edward Kmett 2010-2013
--- License     :  BSD3
--- Maintainer  :  ekmett@gmail.com
--- Stability   :  experimental
--- Portability :  DeriveDataTypeable
--- Version : intervals-0.4.2 (minus distributive instance)
---
--- Interval arithmetic
---
------------------------------------------------------------------------------
-
-module Numeric.Interval
-  ( Interval(..)
-  , (...)
-  , whole
-  , empty
-  , null
-  , singleton
-  , elem
-  , notElem
-  , inf
-  , sup
-  , singular
-  , width
-  , midpoint
-  , intersection
-  , hull
-  , bisection
-  , magnitude
-  , mignitude
-  , contains
-  , isSubsetOf
-  , certainly, (<!), (<=!), (==!), (>=!), (>!)
-  , possibly, (<?), (<=?), (==?), (>=?), (>?)
-  , clamp
-  , idouble
-  , ifloat
-  ) where
-
-import Control.Applicative hiding (empty)
-import Data.Data
-#ifdef VERSION_distributive
-import Data.Distributive
-#endif
-import Data.Foldable hiding (minimum, maximum, elem, notElem, null)
-import Data.Function (on)
-import Data.Monoid
-import Data.Traversable
-#if defined(__GLASGOW_HASKELL) && __GLASGOW_HASKELL__ >= 704
-import GHC.Generics
-#endif
-import Prelude hiding (null, elem, notElem)
-
--- $setup
-
-data Interval a = I !a !a deriving
-  ( Data
-  , Typeable
-#if defined(__GLASGOW_HASKELL) && __GLASGOW_HASKELL__ >= 704
-  , Generic
-#if __GLASGOW_HASKELL__ >= 706
-  , Generic1
-#endif
-#endif
-  )
-
-instance Functor Interval where
-  fmap f (I a b) = I (f a) (f b)
-  {-# INLINE fmap #-}
-
-instance Foldable Interval where
-  foldMap f (I a b) = f a `mappend` f b
-  {-# INLINE foldMap #-}
-
-instance Traversable Interval where
-  traverse f (I a b) = I <$> f a <*> f b
-  {-# INLINE traverse #-}
-
-instance Applicative Interval where
-  pure a = I a a
-  {-# INLINE pure #-}
-  I f g <*> I a b = I (f a) (g b)
-  {-# INLINE (<*>) #-}
-
-instance Monad Interval where
-  return a = I a a
-  {-# INLINE return #-}
-  I a b >>= f = I a' b' where
-    I a' _ = f a
-    I _ b' = f b
-  {-# INLINE (>>=) #-}
-
-#ifdef VERSION_distributive
-instance Distributive Interval where
-  distribute f = fmap inf f ... fmap sup f
-  {-# INLINE distribute #-}
-#endif
-
-infix 3 ...
-
-negInfinity :: Fractional a => a
-negInfinity = (-1)/0
-{-# INLINE negInfinity #-}
-
-posInfinity :: Fractional a => a
-posInfinity = 1/0
-{-# INLINE posInfinity #-}
-
-nan :: Fractional a => a
-nan = 0/0
-
-fmod :: RealFrac a => a -> a -> a
-fmod a b = a - q*b where
-  q = realToFrac (truncate $ a / b :: Integer)
-{-# INLINE fmod #-}
-
--- | The rule of thumb is you should only use this to construct using values
--- that you took out of the interval. Otherwise, use I, to force rounding
-(...) :: a -> a -> Interval a
-(...) = I
-{-# INLINE (...) #-}
-
--- | The whole real number line
---
--- >>> whole
--- -Infinity ... Infinity
-whole :: Fractional a => Interval a
-whole = negInfinity ... posInfinity
-{-# INLINE whole #-}
-
--- | An empty interval
---
--- >>> empty
--- NaN ... NaN
-empty :: Fractional a => Interval a
-empty = nan ... nan
-{-# INLINE empty #-}
-
--- | negation handles NaN properly
---
--- >>> null (1 ... 5)
--- False
---
--- >>> null (1 ... 1)
--- False
---
--- >>> null empty
--- True
-null :: Ord a => Interval a -> Bool
-null x = not (inf x <= sup x)
-{-# INLINE null #-}
-
--- | A singleton point
---
--- >>> singleton 1
--- 1 ... 1
-singleton :: a -> Interval a
-singleton a = a ... a
-{-# INLINE singleton #-}
-
--- | The infinumum (lower bound) of an interval
---
--- >>> inf (1 ... 20)
--- 1
-inf :: Interval a -> a
-inf (I a _) = a
-{-# INLINE inf #-}
-
--- | The supremum (upper bound) of an interval
---
--- >>> sup (1 ... 20)
--- 20
-sup :: Interval a -> a
-sup (I _ b) = b
-{-# INLINE sup #-}
-
--- | Is the interval a singleton point?
--- N.B. This is fairly fragile and likely will not hold after
--- even a few operations that only involve singletons
---
--- >>> singular (singleton 1)
--- True
---
--- >>> singular (1.0 ... 20.0)
--- False
-singular :: Ord a => Interval a -> Bool
-singular x = not (null x) && inf x == sup x
-{-# INLINE singular #-}
-
-instance Eq a => Eq (Interval a) where
-  (==) = (==!)
-  {-# INLINE (==) #-}
-
-instance Show a => Show (Interval a) where
-  showsPrec n (I a b) =
-    showParen (n > 3) $
-      showsPrec 3 a .
-      showString " ... " .
-      showsPrec 3 b
-
--- | Calculate the width of an interval.
---
--- >>> width (1 ... 20)
--- 19
---
--- >>> width (singleton 1)
--- 0
---
--- >>> width empty
--- NaN
-width :: Num a => Interval a -> a
-width (I a b) = b - a
-{-# INLINE width #-}
-
--- | Magnitude
---
--- >>> magnitude (1 ... 20)
--- 20
---
--- >>> magnitude (-20 ... 10)
--- 20
---
--- >>> magnitude (singleton 5)
--- 5
-magnitude :: (Num a, Ord a) => Interval a -> a
-magnitude x = (max `on` abs) (inf x) (sup x)
-{-# INLINE magnitude #-}
-
--- | \"mignitude\"
---
--- >>> mignitude (1 ... 20)
--- 1
---
--- >>> mignitude (-20 ... 10)
--- 10
---
--- >>> mignitude (singleton 5)
--- 5
-mignitude :: (Num a, Ord a) => Interval a -> a
-mignitude x = (min `on` abs) (inf x) (sup x)
-{-# INLINE mignitude #-}
-
-instance (Num a, Ord a) => Num (Interval a) where
-  I a b + I a' b' = (a + a') ... (b + b')
-  {-# INLINE (+) #-}
-  I a b - I a' b' = (a - b') ... (b - a')
-  {-# INLINE (-) #-}
-  I a b * I a' b' =
-    minimum [a * a', a * b', b * a', b * b']
-    ...
-    maximum [a * a', a * b', b * a', b * b']
-  {-# INLINE (*) #-}
-  abs x@(I a b)
-    | a >= 0    = x
-    | b <= 0    = negate x
-    | otherwise = 0 ... max (- a) b
-  {-# INLINE abs #-}
-
-  signum = increasing signum
-  {-# INLINE signum #-}
-
-  fromInteger i = singleton (fromInteger i)
-  {-# INLINE fromInteger #-}
-
--- | Bisect an interval at its midpoint.
---
--- >>> bisection (10.0 ... 20.0)
--- (10.0 ... 15.0,15.0 ... 20.0)
---
--- >>> bisection (singleton 5.0)
--- (5.0 ... 5.0,5.0 ... 5.0)
---
--- >>> bisection empty
--- (NaN ... NaN,NaN ... NaN)
-bisection :: Fractional a => Interval a -> (Interval a, Interval a)
-bisection x = (inf x ... m, m ... sup x)
-  where m = midpoint x
-{-# INLINE bisection #-}
-
--- | Nearest point to the midpoint of the interval.
---
--- >>> midpoint (10.0 ... 20.0)
--- 15.0
---
--- >>> midpoint (singleton 5.0)
--- 5.0
---
--- >>> midpoint empty
--- NaN
-midpoint :: Fractional a => Interval a -> a
-midpoint x = inf x + (sup x - inf x) / 2
-{-# INLINE midpoint #-}
-
--- | Determine if a point is in the interval.
---
--- >>> elem 3.2 (1.0 ... 5.0)
--- True
---
--- >>> elem 5 (1.0 ... 5.0)
--- True
---
--- >>> elem 1 (1.0 ... 5.0)
--- True
---
--- >>> elem 8 (1.0 ... 5.0)
--- False
---
--- >>> elem 5 empty
--- False
---
-elem :: Ord a => a -> Interval a -> Bool
-elem x xs = x >= inf xs && x <= sup xs
-{-# INLINE elem #-}
-
--- | Determine if a point is not included in the interval
---
--- >>> notElem 8 (1.0 ... 5.0)
--- True
---
--- >>> notElem 1.4 (1.0 ... 5.0)
--- False
---
--- And of course, nothing is a member of the empty interval.
---
--- >>> notElem 5 empty
--- True
-notElem :: Ord a => a -> Interval a -> Bool
-notElem x xs = not (elem x xs)
-{-# INLINE notElem #-}
-
--- | 'realToFrac' will use the midpoint
-instance Real a => Real (Interval a) where
-  toRational x
-    | null x   = nan
-    | otherwise = a + (b - a) / 2
-    where
-      a = toRational (inf x)
-      b = toRational (sup x)
-  {-# INLINE toRational #-}
-
-instance Ord a => Ord (Interval a) where
-  compare x y
-    | sup x < inf y = LT
-    | inf x > sup y = GT
-    | sup x == inf y && inf x == sup y = EQ
-    | otherwise = error "Numeric.Interval.compare: ambiguous comparison"
-  {-# INLINE compare #-}
-
-  max (I a b) (I a' b') = max a a' ... max b b'
-  {-# INLINE max #-}
-
-  min (I a b) (I a' b') = min a a' ... min b b'
-  {-# INLINE min #-}
-
--- @'divNonZero' X Y@ assumes @0 `'notElem'` Y@
-divNonZero :: (Fractional a, Ord a) => Interval a -> Interval a -> Interval a
-divNonZero (I a b) (I a' b') =
-  minimum [a / a', a / b', b / a', b / b']
-  ...
-  maximum [a / a', a / b', b / a', b / b']
-
--- @'divPositive' X y@ assumes y > 0, and divides @X@ by [0 ... y]
-divPositive :: (Fractional a, Ord a) => Interval a -> a -> Interval a
-divPositive x@(I a b) y
-  | a == 0 && b == 0 = x
-  -- b < 0 || isNegativeZero b = negInfinity ... ( b / y)
-  | b < 0 = negInfinity ... ( b / y)
-  | a < 0 = whole
-  | otherwise = (a / y) ... posInfinity
-{-# INLINE divPositive #-}
-
--- divNegative assumes y < 0 and divides the interval @X@ by [y ... 0]
-divNegative :: (Fractional a, Ord a) => Interval a -> a -> Interval a
-divNegative x@(I a b) y
-  | a == 0 && b == 0 = - x -- flip negative zeros
-  -- b < 0 || isNegativeZero b = (b / y) ... posInfinity
-  | b < 0 = (b / y) ... posInfinity
-  | a < 0 = whole
-  | otherwise = negInfinity ... (a / y)
-{-# INLINE divNegative #-}
-
-divZero :: (Fractional a, Ord a) => Interval a -> Interval a
-divZero x
-  | inf x == 0 && sup x == 0 = x
-  | otherwise = whole
-{-# INLINE divZero #-}
-
-instance (Fractional a, Ord a) => Fractional (Interval a) where
-  -- TODO: check isNegativeZero properly
-  x / y
-    | 0 `notElem` y = divNonZero x y
-    | iz && sz  = empty -- division by 0
-    | iz        = divPositive x (inf y)
-    |       sz  = divNegative x (sup y)
-    | otherwise = divZero x
-    where
-      iz = inf y == 0
-      sz = sup y == 0
-  recip (I a b)   = on min recip a b ... on max recip a b
-  {-# INLINE recip #-}
-  fromRational r  = let r' = fromRational r in r' ... r'
-  {-# INLINE fromRational #-}
-
-instance RealFrac a => RealFrac (Interval a) where
-  properFraction x = (b, x - fromIntegral b)
-    where
-      b = truncate (midpoint x)
-  {-# INLINE properFraction #-}
-  ceiling x = ceiling (sup x)
-  {-# INLINE ceiling #-}
-  floor x = floor (inf x)
-  {-# INLINE floor #-}
-  round x = round (midpoint x)
-  {-# INLINE round #-}
-  truncate x = truncate (midpoint x)
-  {-# INLINE truncate #-}
-
-instance (RealFloat a, Ord a) => Floating (Interval a) where
-  pi = singleton pi
-  {-# INLINE pi #-}
-  exp = increasing exp
-  {-# INLINE exp #-}
-  log (I a b) = (if a > 0 then log a else negInfinity) ... log b
-  {-# INLINE log #-}
-  cos x
-    | null x = empty
-    | width t >= pi = (-1) ... 1
-    | inf t >= pi = - cos (t - pi)
-    | sup t <= pi = decreasing cos t
-    | sup t <= 2 * pi = (-1) ... cos ((pi * 2 - sup t) `min` inf t)
-    | otherwise = (-1) ... 1
-    where
-      t = fmod x (pi * 2)
-  {-# INLINE cos #-}
-  sin x
-    | null x = empty
-    | otherwise = cos (x - pi / 2)
-  {-# INLINE sin #-}
-  tan x
-    | null x = empty
-    | inf t' <= - pi / 2 || sup t' >= pi / 2 = whole
-    | otherwise = increasing tan x
-    where
-      t = x `fmod` pi
-      t' | t >= pi / 2 = t - pi
-         | otherwise    = t
-  {-# INLINE tan #-}
-  asin x@(I a b)
-    | null x || b < -1 || a > 1 = empty
-    | otherwise =
-      (if a <= -1 then -halfPi else asin a)
-      ...
-      (if b >= 1 then halfPi else asin b)
-    where
-      halfPi = pi / 2
-  {-# INLINE asin #-}
-  acos x@(I a b)
-    | null x || b < -1 || a > 1 = empty
-    | otherwise =
-      (if b >= 1 then 0 else acos b)
-      ...
-      (if a < -1 then pi else acos a)
-  {-# INLINE acos #-}
-  atan = increasing atan
-  {-# INLINE atan #-}
-  sinh = increasing sinh
-  {-# INLINE sinh #-}
-  cosh x@(I a b)
-    | null x = empty
-    | b < 0  = decreasing cosh x
-    | a >= 0 = increasing cosh x
-    | otherwise  = I 0 $ cosh $ if - a > b
-                                then a
-                                else b
-  {-# INLINE cosh #-}
-  tanh = increasing tanh
-  {-# INLINE tanh #-}
-  asinh = increasing asinh
-  {-# INLINE asinh #-}
-  acosh x@(I a b)
-    | null x || b < 1 = empty
-    | otherwise = I lo $ acosh b
-    where lo | a <= 1 = 0
-             | otherwise = acosh a
-  {-# INLINE acosh #-}
-  atanh x@(I a b)
-    | null x || b < -1 || a > 1 = empty
-    | otherwise =
-      (if a <= - 1 then negInfinity else atanh a)
-      ...
-      (if b >= 1 then posInfinity else atanh b)
-  {-# INLINE atanh #-}
-
--- | lift a monotone increasing function over a given interval
-increasing :: (a -> b) -> Interval a -> Interval b
-increasing f (I a b) = f a ... f b
-
--- | lift a monotone decreasing function over a given interval
-decreasing :: (a -> b) -> Interval a -> Interval b
-decreasing f (I a b) = f b ... f a
-
--- | We have to play some semantic games to make these methods make sense.
--- Most compute with the midpoint of the interval.
-instance RealFloat a => RealFloat (Interval a) where
-  floatRadix = floatRadix . midpoint
-
-  floatDigits = floatDigits . midpoint
-  floatRange = floatRange . midpoint
-  decodeFloat = decodeFloat . midpoint
-  encodeFloat m e = singleton (encodeFloat m e)
-  exponent = exponent . midpoint
-  significand x = min a b ... max a b
-    where
-      (_ ,em) = decodeFloat (midpoint x)
-      (mi,ei) = decodeFloat (inf x)
-      (ms,es) = decodeFloat (sup x)
-      a = encodeFloat mi (ei - em - floatDigits x)
-      b = encodeFloat ms (es - em - floatDigits x)
-  scaleFloat n x = scaleFloat n (inf x) ... scaleFloat n (sup x)
-  isNaN x = isNaN (inf x) || isNaN (sup x)
-  isInfinite x = isInfinite (inf x) || isInfinite (sup x)
-  isDenormalized x = isDenormalized (inf x) || isDenormalized (sup x)
-  -- contains negative zero
-  isNegativeZero x = not (inf x > 0)
-                  && not (sup x < 0)
-                  && (  (sup x == 0 && (inf x < 0 || isNegativeZero (inf x)))
-                     || (inf x == 0 && isNegativeZero (inf x))
-                     || (inf x < 0 && sup x >= 0))
-  isIEEE x = isIEEE (inf x) && isIEEE (sup x)
-  atan2 = error "unimplemented"
-
--- TODO: (^), (^^) to give tighter bounds
-
--- | Calculate the intersection of two intervals.
---
--- >>> intersection (1 ... 10 :: Interval Double) (5 ... 15 :: Interval Double)
--- 5.0 ... 10.0
-intersection :: (Fractional a, Ord a) => Interval a -> Interval a -> Interval a
-intersection x@(I a b) y@(I a' b')
-  | x /=! y = empty
-  | otherwise = max a a' ... min b b'
-{-# INLINE intersection #-}
-
--- | Calculate the convex hull of two intervals
---
--- >>> hull (0 ... 10 :: Interval Double) (5 ... 15 :: Interval Double)
--- 0.0 ... 15.0
---
--- >>> hull (15 ... 85 :: Interval Double) (0 ... 10 :: Interval Double)
--- 0.0 ... 85.0
-hull :: Ord a => Interval a -> Interval a -> Interval a
-hull x@(I a b) y@(I a' b')
-  | null x = y
-  | null y = x
-  | otherwise = min a a' ... max b b'
-{-# INLINE hull #-}
-
--- | For all @x@ in @X@, @y@ in @Y@. @x '<' y@
---
--- >>> (5 ... 10 :: Interval Double) <! (20 ... 30 :: Interval Double)
--- True
---
--- >>> (5 ... 10 :: Interval Double) <! (10 ... 30 :: Interval Double)
--- False
---
--- >>> (20 ... 30 :: Interval Double) <! (5 ... 10 :: Interval Double)
--- False
-(<!)  :: Ord a => Interval a -> Interval a -> Bool
-x <! y = sup x < inf y
-{-# INLINE (<!) #-}
-
--- | For all @x@ in @X@, @y@ in @Y@. @x '<=' y@
---
--- >>> (5 ... 10 :: Interval Double) <=! (20 ... 30 :: Interval Double)
--- True
---
--- >>> (5 ... 10 :: Interval Double) <=! (10 ... 30 :: Interval Double)
--- True
---
--- >>> (20 ... 30 :: Interval Double) <=! (5 ... 10 :: Interval Double)
--- False
-(<=!) :: Ord a => Interval a -> Interval a -> Bool
-x <=! y = sup x <= inf y
-{-# INLINE (<=!) #-}
-
--- | For all @x@ in @X@, @y@ in @Y@. @x '==' y@
---
--- Only singleton intervals return true
---
--- >>> (singleton 5 :: Interval Double) ==! (singleton 5 :: Interval Double)
--- True
---
--- >>> (5 ... 10 :: Interval Double) ==! (5 ... 10 :: Interval Double)
--- False
-(==!) :: Eq a => Interval a -> Interval a -> Bool
-x ==! y = sup x == inf y && inf x == sup y
-{-# INLINE (==!) #-}
-
--- | For all @x@ in @X@, @y@ in @Y@. @x '/=' y@
---
--- >>> (5 ... 15 :: Interval Double) /=! (20 ... 40 :: Interval Double)
--- True
---
--- >>> (5 ... 15 :: Interval Double) /=! (15 ... 40 :: Interval Double)
--- False
-(/=!) :: Ord a => Interval a -> Interval a -> Bool
-x /=! y = sup x < inf y || inf x > sup y
-{-# INLINE (/=!) #-}
-
--- | For all @x@ in @X@, @y@ in @Y@. @x '>' y@
---
--- >>> (20 ... 40 :: Interval Double) >! (10 ... 19 :: Interval Double)
--- True
---
--- >>> (5 ... 20 :: Interval Double) >! (15 ... 40 :: Interval Double)
--- False
-(>!)  :: Ord a => Interval a -> Interval a -> Bool
-x >! y = inf x > sup y
-{-# INLINE (>!) #-}
-
--- | For all @x@ in @X@, @y@ in @Y@. @x '>=' y@
---
--- >>> (20 ... 40 :: Interval Double) >=! (10 ... 20 :: Interval Double)
--- True
---
--- >>> (5 ... 20 :: Interval Double) >=! (15 ... 40 :: Interval Double)
--- False
-(>=!) :: Ord a => Interval a -> Interval a -> Bool
-x >=! y = inf x >= sup y
-{-# INLINE (>=!) #-}
-
--- | For all @x@ in @X@, @y@ in @Y@. @x `op` y@
---
---
-certainly :: Ord a => (forall b. Ord b => b -> b -> Bool) -> Interval a -> Interval a -> Bool
-certainly cmp l r
-    | lt && eq && gt = True
-    | lt && eq       = l <=! r
-    | lt &&       gt = l /=! r
-    | lt             = l <!  r
-    |       eq && gt = l >=! r
-    |       eq       = l ==! r
-    |             gt = l >!  r
-    | otherwise      = False
-    where
-        lt = cmp LT EQ
-        eq = cmp EQ EQ
-        gt = cmp GT EQ
-{-# INLINE certainly #-}
-
--- | Check if interval @X@ totally contains interval @Y@
---
--- >>> (20 ... 40 :: Interval Double) `contains` (25 ... 35 :: Interval Double)
--- True
---
--- >>> (20 ... 40 :: Interval Double) `contains` (15 ... 35 :: Interval Double)
--- False
-contains :: Ord a => Interval a -> Interval a -> Bool
-contains x y = null y
-            || (not (null x) && inf x <= inf y && sup y <= sup x)
-{-# INLINE contains #-}
-
--- | Flipped version of `contains`. Check if interval @X@ a subset of interval @Y@
---
--- >>> (25 ... 35 :: Interval Double) `isSubsetOf` (20 ... 40 :: Interval Double)
--- True
---
--- >>> (20 ... 40 :: Interval Double) `isSubsetOf` (15 ... 35 :: Interval Double)
--- False
-isSubsetOf :: Ord a => Interval a -> Interval a -> Bool
-isSubsetOf = flip contains
-{-# INLINE isSubsetOf #-}
-
--- | Does there exist an @x@ in @X@, @y@ in @Y@ such that @x '<' y@?
-(<?) :: Ord a => Interval a -> Interval a -> Bool
-x <? y = inf x < sup y
-{-# INLINE (<?) #-}
-
--- | Does there exist an @x@ in @X@, @y@ in @Y@ such that @x '<=' y@?
-(<=?) :: Ord a => Interval a -> Interval a -> Bool
-x <=? y = inf x <= sup y
-{-# INLINE (<=?) #-}
-
--- | Does there exist an @x@ in @X@, @y@ in @Y@ such that @x '==' y@?
-(==?) :: Ord a => Interval a -> Interval a -> Bool
-x ==? y = inf x <= sup y && sup x >= inf y
-{-# INLINE (==?) #-}
-
--- | Does there exist an @x@ in @X@, @y@ in @Y@ such that @x '/=' y@?
-(/=?) :: Eq a => Interval a -> Interval a -> Bool
-x /=? y = inf x /= sup y || sup x /= inf y
-{-# INLINE (/=?) #-}
-
--- | Does there exist an @x@ in @X@, @y@ in @Y@ such that @x '>' y@?
-(>?) :: Ord a => Interval a -> Interval a -> Bool
-x >? y = sup x > inf y
-{-# INLINE (>?) #-}
-
--- | Does there exist an @x@ in @X@, @y@ in @Y@ such that @x '>=' y@?
-(>=?) :: Ord a => Interval a -> Interval a -> Bool
-x >=? y = sup x >= inf y
-{-# INLINE (>=?) #-}
-
--- | Does there exist an @x@ in @X@, @y@ in @Y@ such that @x `op` y@?
-possibly :: Ord a => (forall b. Ord b => b -> b -> Bool) -> Interval a -> Interval a -> Bool
-possibly cmp l r
-    | lt && eq && gt = True
-    | lt && eq       = l <=? r
-    | lt &&       gt = l /=? r
-    | lt             = l <? r
-    |       eq && gt = l >=? r
-    |       eq       = l ==? r
-    |             gt = l >? r
-    | otherwise      = False
-    where
-        lt = cmp LT EQ
-        eq = cmp EQ EQ
-        gt = cmp GT EQ
-{-# INLINE possibly #-}
-
--- | The nearest value to that supplied which is contained in the interval.
-clamp :: Ord a => Interval a -> a -> a
-clamp (I a b) x | x < a     = a
-                | x > b     = b
-                | otherwise = x
-
--- | id function. Useful for type specification
---
--- >>> :t idouble (1 ... 3)
--- idouble (1 ... 3) :: Interval Double
-idouble :: Interval Double -> Interval Double
-idouble = id
-
--- | id function. Useful for type specification
---
--- >>> :t ifloat (1 ... 3)
--- ifloat (1 ... 3) :: Interval Float
-ifloat :: Interval Float -> Interval Float
-ifloat = id
-
--- Bugs:
--- sin 1 :: Interval Double
-
-
-default (Integer,Double)
diff --git a/lib/Numeric/Interval/Bounded.hs b/lib/Numeric/Interval/Bounded.hs
index 2dd4d7b..a0d5d0d 100644
--- a/lib/Numeric/Interval/Bounded.hs
+++ b/lib/Numeric/Interval/Bounded.hs
@@ -2,8 +2,8 @@ module Numeric.Interval.Bounded where
 
 import Numeric.Interval
 
-whole' :: Bounded a => Interval a
+whole' :: (Ord a, Bounded a) => Interval a
 whole' = ( minBound ... maxBound )
 
-empty' :: Bounded a => Interval a
+empty' :: (Ord a, Bounded a) => Interval a
 empty' = ( maxBound ... minBound )
diff --git a/lib/TimeUtil.hs b/lib/TimeUtil.hs
index 4300f39..c3a10e0 100644
--- a/lib/TimeUtil.hs
+++ b/lib/TimeUtil.hs
@@ -1,6 +1,5 @@
 {-# LANGUAGE OverloadedStrings #-}
 {-# LANGUAGE ViewPatterns #-}
-{-# LANGUAGE CPP #-}
 module TimeUtil
     ( now
     , IsTime(..)
@@ -18,9 +17,6 @@ import Data.Time.LocalTime
 import Data.Time.Format
 import Data.Time.Clock
 import Data.Time.Clock.POSIX
-#if !MIN_VERSION_time(1,5,0)
-import System.Locale (defaultTimeLocale)
-#endif
 import Data.String
 import Control.Applicative
 import Data.Maybe
-- 
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