diff options
author | Yale AI Dept <ai@nebula.cs.yale.edu> | 1993-07-14 13:08:00 -0500 |
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committer | Duncan McGreggor <duncan.mcgreggor@rackspace.com> | 1993-07-14 13:08:00 -0500 |
commit | 4e987026148fe65c323afbc93cd560c07bf06b3f (patch) | |
tree | 26ae54177389edcbe453d25a00c38c2774e8b7d4 /progs/lib/hbc |
Import to github.
Diffstat (limited to 'progs/lib/hbc')
-rw-r--r-- | progs/lib/hbc/Either.hs | 2 | ||||
-rw-r--r-- | progs/lib/hbc/Either.hu | 3 | ||||
-rw-r--r-- | progs/lib/hbc/Hash.hs | 79 | ||||
-rw-r--r-- | progs/lib/hbc/Hash.hu | 3 | ||||
-rw-r--r-- | progs/lib/hbc/ListUtil.hs | 48 | ||||
-rw-r--r-- | progs/lib/hbc/ListUtil.hu | 4 | ||||
-rw-r--r-- | progs/lib/hbc/Maybe.hs | 6 | ||||
-rw-r--r-- | progs/lib/hbc/Maybe.hu | 3 | ||||
-rw-r--r-- | progs/lib/hbc/Miranda.hs | 90 | ||||
-rw-r--r-- | progs/lib/hbc/Miranda.hu | 4 | ||||
-rw-r--r-- | progs/lib/hbc/Option.hs | 3 | ||||
-rw-r--r-- | progs/lib/hbc/Option.hu | 3 | ||||
-rw-r--r-- | progs/lib/hbc/Pretty.hs | 50 | ||||
-rw-r--r-- | progs/lib/hbc/Printf.hs | 150 | ||||
-rw-r--r-- | progs/lib/hbc/Printf.hu | 3 | ||||
-rw-r--r-- | progs/lib/hbc/QSort.hs | 47 | ||||
-rw-r--r-- | progs/lib/hbc/QSort.hu | 3 | ||||
-rw-r--r-- | progs/lib/hbc/README | 97 | ||||
-rw-r--r-- | progs/lib/hbc/Random.hs | 52 | ||||
-rw-r--r-- | progs/lib/hbc/Random.hu | 3 | ||||
-rw-r--r-- | progs/lib/hbc/Time.hs | 51 | ||||
-rw-r--r-- | progs/lib/hbc/Time.hu | 3 |
22 files changed, 707 insertions, 0 deletions
diff --git a/progs/lib/hbc/Either.hs b/progs/lib/hbc/Either.hs new file mode 100644 index 0000000..fad5af8 --- /dev/null +++ b/progs/lib/hbc/Either.hs @@ -0,0 +1,2 @@ +module Either(Either(..)) where +data Either a b = Left a | Right b deriving (Eq, Ord, Text, Binary) diff --git a/progs/lib/hbc/Either.hu b/progs/lib/hbc/Either.hu new file mode 100644 index 0000000..3313235 --- /dev/null +++ b/progs/lib/hbc/Either.hu @@ -0,0 +1,3 @@ +:output $LIBRARYBIN/ +:o= all +Either.hs diff --git a/progs/lib/hbc/Hash.hs b/progs/lib/hbc/Hash.hs new file mode 100644 index 0000000..1f14c6f --- /dev/null +++ b/progs/lib/hbc/Hash.hs @@ -0,0 +1,79 @@ +module Hash where +-- +-- Hash a value. Hashing produces an Int of +-- unspecified range. +-- + +class Hashable a where + hash :: a -> Int + +instance Hashable Char where + hash x = ord x + +instance Hashable Int where + hash x = x + +instance Hashable Integer where + hash x = fromInteger x + +instance Hashable Float where + hash x = truncate x + +instance Hashable Double where + hash x = truncate x + +instance Hashable Bin where + hash x = 0 + +{-instance Hashable File where + hash x = 0 -} + +instance Hashable () where + hash x = 0 + +instance Hashable (a -> b) where + hash x = 0 + +instance Hashable a => Hashable [a] where + hash x = sum (map hash x) + +instance (Hashable a, Hashable b) => Hashable (a,b) where + hash (a,b) = hash a + 3 * hash b + +instance (Hashable a, Hashable b, Hashable c) => Hashable (a,b,c) where + hash (a,b,c) = hash a + 3 * hash b + 5 * hash c + +instance (Hashable a, Hashable b, Hashable c, Hashable d) => Hashable (a,b,c,d) where + hash (a,b,c,d) = hash a + 3 * hash b + 5 * hash c + 7 * hash d + +instance (Hashable a, Hashable b, Hashable c, Hashable d, Hashable e) => Hashable (a,b,c,d,e) where + hash (a,b,c,d,e) = hash a + hash b + hash c + hash d + hash e + +instance Hashable Bool where + hash False = 0 + hash True = 1 + +instance (Integral a, Hashable a) => Hashable (Ratio a) where + hash x = hash (denominator x) + hash (numerator x) + +instance (RealFloat a, Hashable a) => Hashable (Complex a) where + hash (x :+ y) = hash x + hash y + +instance (Hashable a, Hashable b) => Hashable (Assoc a b) where + hash (x := y) = hash x + hash y + +instance (Ix a) => Hashable (Array a b) where + hash x = 0 -- !!! + +instance Hashable Request where + hash x = 0 -- !! + +instance Hashable Response where + hash x = 0 -- !! + +instance Hashable IOError where + hash x = 0 -- !! + +hashToMax maxhash x = + let h = abs (hash x) + in if h < 0 then 0 else h `rem` maxhash diff --git a/progs/lib/hbc/Hash.hu b/progs/lib/hbc/Hash.hu new file mode 100644 index 0000000..2c23c72 --- /dev/null +++ b/progs/lib/hbc/Hash.hu @@ -0,0 +1,3 @@ +:output $LIBRARYBIN/ +:o= all +Hash.hs diff --git a/progs/lib/hbc/ListUtil.hs b/progs/lib/hbc/ListUtil.hs new file mode 100644 index 0000000..560920e --- /dev/null +++ b/progs/lib/hbc/ListUtil.hs @@ -0,0 +1,48 @@ +module ListUtil(assoc, concatMap, unfoldr, mapAccuml, union, intersection, chopList, assocDef, lookup, Maybe..) where +import Maybe + +-- Lookup an item in an association list. Apply a function to it if it is found, otherwise return a default value. +assoc :: (Eq c) => (a -> b) -> b -> [(c, a)] -> c -> b +assoc f d [] x = d +assoc f d ((x',y):xys) x | x' == x = f y + | otherwise = assoc f d xys x + +-- Map and concatename results. +concatMap :: (a -> [b]) -> [a] -> [b] +concatMap f [] = [] +concatMap f (x:xs) = + case f x of + [] -> concatMap f xs + ys -> ys ++ concatMap f xs + +-- Repeatedly extract (and transform) values until a predicate hold. Return the list of values. +unfoldr :: (a -> (b, a)) -> (a -> Bool) -> a -> [b] +unfoldr f p x | p x = [] + | otherwise = y:unfoldr f p x' + where (y, x') = f x + +-- Map, but plumb a state through the map operation. +mapAccuml :: (a -> b -> (a, c)) -> a -> [b] -> (a, [c]) +mapAccuml f s [] = (s, []) +mapAccuml f s (x:xs) = (s'', y:ys) + where (s', y) = f s x + (s'', ys) = mapAccuml f s' xs + +-- Union of sets as lists. +union :: (Eq a) => [a] -> [a] -> [a] +union xs ys = xs ++ (ys \\ xs) + +-- Intersection of sets as lists. +intersection :: (Eq a) => [a] -> [a] -> [a] +intersection xs ys = [x | x<-xs, x `elem` ys] + +--- Functions derived from those above + +chopList :: ([a] -> (b, [a])) -> [a] -> [b] +chopList f l = unfoldr f null l + +assocDef :: (Eq a) => [(a, b)] -> b -> a -> b +assocDef l d x = assoc id d l x + +lookup :: (Eq a) => [(a, b)] -> a -> Maybe b +lookup l x = assoc Just Nothing l x diff --git a/progs/lib/hbc/ListUtil.hu b/progs/lib/hbc/ListUtil.hu new file mode 100644 index 0000000..7402cb7 --- /dev/null +++ b/progs/lib/hbc/ListUtil.hu @@ -0,0 +1,4 @@ +:output $LIBRARYBIN/ +:o= all +ListUtil.hs +Maybe.hu diff --git a/progs/lib/hbc/Maybe.hs b/progs/lib/hbc/Maybe.hs new file mode 100644 index 0000000..f0ada70 --- /dev/null +++ b/progs/lib/hbc/Maybe.hs @@ -0,0 +1,6 @@ +module Maybe(Maybe(..), thenM) where +-- Maybe together with Just and thenM forms a monad, but is more +-- by accident than by design. +data Maybe a = Nothing | Just a deriving (Eq, Ord, Text, Binary) +Nothing `thenM` _ = Nothing +Just a `thenM` f = f a diff --git a/progs/lib/hbc/Maybe.hu b/progs/lib/hbc/Maybe.hu new file mode 100644 index 0000000..a55b652 --- /dev/null +++ b/progs/lib/hbc/Maybe.hu @@ -0,0 +1,3 @@ +:output $LIBRARYBIN/ +:o= all +Maybe.hs diff --git a/progs/lib/hbc/Miranda.hs b/progs/lib/hbc/Miranda.hs new file mode 100644 index 0000000..2d863ce --- /dev/null +++ b/progs/lib/hbc/Miranda.hs @@ -0,0 +1,90 @@ +module Miranda(cjustify, lay, layn, limit, ljustify, merge, rep, rjustify, spaces, + {-force,seq,-}sort) where +--import UnsafeDirty +import QSort + +cjustify :: Int -> String -> String +cjustify n s = spaces l ++ s ++ spaces r + where + m = n - length s + l = m `div` 2 + r = m - l + +{- +index :: [a] -> [Int] +index xs = f xs 0 + where f [] n = [] + f (_:xs) n = n : f xs (n+1) +-} + +lay :: [String] -> String +lay = concat . map (++"\n") + +layn :: [String] -> String +layn = concat . zipWith f [1..] + where + f :: Int -> String -> String + f n x = rjustify 4 (show n) ++ ") " ++ x ++ "\n" + +limit :: (Eq a) => [a] -> a +limit (x:y:ys) | x == y = x + | otherwise = limit (y:ys) +limit _ = error "Miranda.limit: bad use" + +ljustify :: Int -> String -> String +ljustify n s = s ++ spaces (n - length s) + +merge :: (Ord a) => [a] -> [a] -> [a] +merge [] ys = ys +merge xs [] = xs +merge xxs@(x:xs) yys@(y:ys) | x <= y = x : merge xs yys + | otherwise = y : merge xxs ys + +rep :: Int -> b -> [b] +rep n x = take n (repeat x) + +rjustify :: Int -> String -> String +rjustify n s = spaces (n - length s) ++ s + +spaces :: Int -> String +spaces 0 = "" +spaces n = ' ' : spaces (n-1) + +------------- + +arctan x = atan x +code c = ord c +converse f a b = flip f a b +decode n = chr n +digit c = isDigit c +e :: (Floating a) => a +e = exp 1 +entier x = floor x +filemode f = error "Miranda.filemode" +--getenv +hd xs = head xs +hugenum :: (Floating a) => a +hugenum = error "hugenum" --!!! +integer x = x == truncate x +letter c = isAlpha c +map2 f xs ys = zipWith f xs ys +--max +max2 x y = max x y +member xs x = x `elem` xs +--min +min2 x y = min x y +mkset xs = nub xs +neg x = negate x +numval :: (Num a) => String -> a +numval cs = read cs +postfix xs x = xs ++ [x] +--read +scan f z l = scanl f z l +--shownum !!! +--showfloat !!! +--showscaled !!! +tinynum :: (Floating a) => a +tinynum = error "tinynum" +undef = error "undefined" +zip2 xs ys = zip xs ys +--zip diff --git a/progs/lib/hbc/Miranda.hu b/progs/lib/hbc/Miranda.hu new file mode 100644 index 0000000..cfa86ed --- /dev/null +++ b/progs/lib/hbc/Miranda.hu @@ -0,0 +1,4 @@ +:output $LIBRARYBIN/ +:o= all +Miranda.hs +QSort.hu diff --git a/progs/lib/hbc/Option.hs b/progs/lib/hbc/Option.hs new file mode 100644 index 0000000..a4b2423 --- /dev/null +++ b/progs/lib/hbc/Option.hs @@ -0,0 +1,3 @@ +module Option(Option(..), thenO) where +import Maybe renaming (Maybe to Option, Nothing to None, Just to Some, thenM to thenO) + diff --git a/progs/lib/hbc/Option.hu b/progs/lib/hbc/Option.hu new file mode 100644 index 0000000..592a0cd --- /dev/null +++ b/progs/lib/hbc/Option.hu @@ -0,0 +1,3 @@ +:output $LIBRARYBIN/ +:o= all +Option.hs diff --git a/progs/lib/hbc/Pretty.hs b/progs/lib/hbc/Pretty.hs new file mode 100644 index 0000000..ad63dbe --- /dev/null +++ b/progs/lib/hbc/Pretty.hs @@ -0,0 +1,50 @@ +module Pretty(text, separate, nest, pretty, (~.), (^.), IText(..), Context(..)) where +infixr 8 ~. +infixr 8 ^. + +type IText = Context -> [String] +type Context = (Bool,Int,Int,Int) + +text :: String -> IText +text s (v,w,m,m') = [s] + +(~.) :: IText -> IText -> IText +(~.) d1 d2 (v,w,m,m') = + let t = d1 (False,w,m,m') + tn = last t + indent = length tn + sig = if length t == 1 + then m' + indent + else length (dropWhile (==' ') tn) + (l:ls) = d2 (False,w-indent,m,sig) + in init t ++ + [tn ++ l] ++ + map (space indent++) ls + +space :: Int -> String +space n = [' ' | i<-[1..n]] + +(^.) :: IText -> IText -> IText +(^.) d1 d2 (v,w,m,m') = d1 (True,w,m,m') ++ d2 (True,w,m,0) + +separate :: [IText] -> IText +separate [] _ = [""] +separate ds (v,w,m,m') = + let hor = foldr1 (\d1 d2 -> d1 ~. text " " ~. d2) ds + ver = foldr1 (^.) ds + t = hor (v,w,m,m') + in if fits 1 t && fits (w `min` m-m') (head t) + then t + else ver (v,w,m,m') + +fits n xs = length xs <= n `max` 0 --null (drop n xs) + +nest :: Int -> IText -> IText +nest n d (v,w,m,m') = + if v then + map (space n++) (d (v,w-n,m,if m'==0 then 0 else m'+n)) + else + d (v,w,m,m') + +pretty :: Int->Int->IText->String +pretty w m d = concat (map (++"\n") (d (False,w,m,0))) diff --git a/progs/lib/hbc/Printf.hs b/progs/lib/hbc/Printf.hs new file mode 100644 index 0000000..c8291bd --- /dev/null +++ b/progs/lib/hbc/Printf.hs @@ -0,0 +1,150 @@ +-- This code used a function in the lml library (fmtf) that I don't have. +-- If someone makes this work for floats let me know -- jcp +-- +-- A C printf like formatter. +-- Conversion specs: +-- - left adjust +-- num field width +-- . separates width from precision +-- Formatting characters: +-- c Char, Int, Integer +-- d Char, Int, Integer +-- o Char, Int, Integer +-- x Char, Int, Integer +-- u Char, Int, Integer +-- f Float, Double +-- g Float, Double +-- e Float, Double +-- s String +-- +module Printf(UPrintf(..), printf) where + +-- import LMLfmtf + +data UPrintf = UChar Char | + UString String | + UInt Int | + UInteger Integer | + UFloat Float | + UDouble Double + +printf :: String -> [UPrintf] -> String +printf "" [] = "" +printf "" (_:_) = fmterr +printf ('%':_) [] = argerr +printf ('%':cs) us@(_:_) = fmt cs us +printf (c:cs) us = c:printf cs us + +fmt :: String -> [UPrintf] -> String +fmt cs us = + let (width, prec, ladj, zero, cs', us') = getSpecs False False cs us + adjust (pre, str) = + let lstr = length str + lpre = length pre + fill = if lstr+lpre < width then take (width-(lstr+lpre)) (repeat (if zero then '0' else ' ')) else "" + in if ladj then pre ++ str ++ fill else pre ++ fill ++ str + in + case cs' of + [] -> fmterr + c:cs'' -> + case us' of + [] -> argerr + u:us'' -> + (case c of + 'c' -> adjust ("", [chr (toint u)]) + 'd' -> adjust (fmti u) + 'x' -> adjust ("", fmtu 16 u) + 'o' -> adjust ("", fmtu 8 u) + 'u' -> adjust ("", fmtu 10 u) + '%' -> "%" + 'e' -> adjust (dfmt c prec (todbl u)) + 'f' -> adjust (dfmt c prec (todbl u)) + 'g' -> adjust (dfmt c prec (todbl u)) + 's' -> adjust ("", tostr u) + c -> perror ("bad formatting char " ++ [c]) + ) ++ printf cs'' us'' +unimpl = perror "unimplemented" + +fmti (UInt i) = if i < 0 then + if i == -i then fmti (UInteger (toInteger i)) else ("-", itos (-i)) + else + ("", itos i) +fmti (UInteger i) = if i < 0 then ("-", itos (-i)) else ("", itos i) +fmti (UChar c) = fmti (UInt (ord c)) +fmti u = baderr + +fmtu b (UInt i) = if i < 0 then + if i == -i then itosb b (maxi - toInteger (i+1) - 1) else itosb b (maxi - toInteger (-i)) + else + itosb b (toInteger i) +fmtu b (UInteger i) = itosb b i +fmtu b (UChar c) = itosb b (toInteger (ord c)) +fmtu b u = baderr + +maxi :: Integer +maxi = (toInteger maxInt + 1) * 2 + +toint (UInt i) = i +toint (UInteger i) = toInt i +toint (UChar c) = ord c +toint u = baderr + +tostr (UString s) = s +tostr u = baderr + +todbl (UDouble d) = d +todbl (UFloat f) = fromRational (toRational f) +todbl u = baderr + +itos n = + if n < 10 then + [chr (ord '0' + toInt n)] + else + let (q, r) = quotRem n 10 in + itos q ++ [chr (ord '0' + toInt r)] + +chars = array (0,15) (zipWith (:=) [0..] "0123456789abcdef") +itosb :: Integer -> Integer -> String +itosb b n = + if n < b then + [chars!n] + else + let (q, r) = quotRem n b in + itosb b q ++ [chars!r] + +stoi :: Int -> String -> (Int, String) +stoi a (c:cs) | isDigit c = stoi (a*10 + ord c - ord '0') cs +stoi a cs = (a, cs) + +getSpecs :: Bool -> Bool -> String -> [UPrintf] -> (Int, Int, Bool, Bool, String, [UPrintf]) +getSpecs l z ('-':cs) us = getSpecs True z cs us +getSpecs l z ('0':cs) us = getSpecs l True cs us +getSpecs l z ('*':cs) us = unimpl +getSpecs l z cs@(c:_) us | isDigit c = + let (n, cs') = stoi 0 cs + (p, cs'') = case cs' of + '.':r -> stoi 0 r + _ -> (-1, cs') + in (n, p, l, z, cs'', us) +getSpecs l z cs us = (0, -1, l, z, cs, us) + +-- jcp: I don't know what the lml function fmtf does. Someone needs to +-- rewrite this. + +{- +dfmt c p d = + case fmtf ("1" ++ (if p < 0 then "" else '.':itos p) ++ [c]) d of + '-':cs -> ("-", cs) + cs -> ("" , cs) +-} +dfmt = error "fmtf not implemented" + +perror s = error ("Printf.printf: "++s) +fmterr = perror "formatting string ended prematurely" +argerr = perror "argument list ended prematurely" +baderr = perror "bad argument" + +-- This is needed because standard Haskell does not have toInt + +toInt :: Integral a => a -> Int +toInt x = fromIntegral x diff --git a/progs/lib/hbc/Printf.hu b/progs/lib/hbc/Printf.hu new file mode 100644 index 0000000..d94f5b1 --- /dev/null +++ b/progs/lib/hbc/Printf.hu @@ -0,0 +1,3 @@ +:output $LIBRARYBIN/ +:o= all +Printf.hs diff --git a/progs/lib/hbc/QSort.hs b/progs/lib/hbc/QSort.hs new file mode 100644 index 0000000..f19eb43 --- /dev/null +++ b/progs/lib/hbc/QSort.hs @@ -0,0 +1,47 @@ +{- + This module implements a sort function using a variation on + quicksort. It is stable, uses no concatenation and compares + only with <=. + + sortLe sorts with a given predicate + sort uses the <= method + + Author: Lennart Augustsson +-} + +module QSort(sortLe, sort) where +sortLe :: (a -> a -> Bool) -> [a] -> [a] +sortLe le l = qsort le l [] + +sort :: (Ord a) => [a] -> [a] +sort l = qsort (<=) l [] + +-- qsort is stable and does not concatenate. +qsort le [] r = r +qsort le [x] r = x:r +qsort le (x:xs) r = qpart le x xs [] [] r + +-- qpart partitions and sorts the sublists +qpart le x [] rlt rge r = + -- rlt and rge are in reverse order and must be sorted with an + -- anti-stable sorting + rqsort le rlt (x:rqsort le rge r) +qpart le x (y:ys) rlt rge r = + if le x y then + qpart le x ys rlt (y:rge) r + else + qpart le x ys (y:rlt) rge r + +-- rqsort is as qsort but anti-stable, i.e. reverses equal elements +rqsort le [] r = r +rqsort le [x] r = x:r +rqsort le (x:xs) r = rqpart le x xs [] [] r + +rqpart le x [] rle rgt r = + qsort le rle (x:qsort le rgt r) +rqpart le x (y:ys) rle rgt r = + if le y x then + rqpart le x ys (y:rle) rgt r + else + rqpart le x ys rle (y:rgt) r + diff --git a/progs/lib/hbc/QSort.hu b/progs/lib/hbc/QSort.hu new file mode 100644 index 0000000..9a07dd1 --- /dev/null +++ b/progs/lib/hbc/QSort.hu @@ -0,0 +1,3 @@ +:output $LIBRARYBIN/ +:o= all +QSort.hs diff --git a/progs/lib/hbc/README b/progs/lib/hbc/README new file mode 100644 index 0000000..c51452a --- /dev/null +++ b/progs/lib/hbc/README @@ -0,0 +1,97 @@ +These libraries are adapted from the lml library. Also included are a number +of Common Lisp functions. + +The hbc library contains the following modules and functions: + +* module Either + binary sum data type + data Either a b = Left a | Right b + constructor Left typically used for errors + +* module Option + type for success or failure + data Option a = None | Some a + thenO :: Option a -> (a -> Option b) -> Option b apply a function that may fail + + +* module ListUtil + Various useful functions involving lists that are missing from the Prelude + assoc :: (Eq c) => (a -> b) -> b -> [(c, a)] -> c -> b + assoc f d l k looks for k in the association list l, if it is found f is applied to the value, otherwise d is returned + concatMap :: (a -> [b]) -> [a] -> [b] + flattening map (LMLs concmap) + unfoldr :: (a -> (b, a)) -> (a -> Bool) -> a -> [b] + unfoldr f p x repeatedly applies f to x until (p x) holds. (f x) should give a list element and a new x + mapAccuml :: (a -> b -> (a, c)) -> a -> [b] -> (a, [c]) + mapAccuml f s l maps f over l, but also threads the state s though (LMLs mapstate) + union :: (Eq a) => [a] -> [a] -> [a] + unions of two lists + intersection :: (Eq a) => [a] -> [a] -> [a] + intersection of two lists + chopList :: ([a] -> (b, [a])) -> [a] -> [b] + LMLs choplist + assocDef :: (Eq a) => [(a, b)] -> b -> a -> b + LMLs assocdef + lookup :: (Eq a) => [(a, b)] -> a -> Option b + lookup l k looks for the key k in the association list l and returns an optional value + +* module Pretty + John Hughes pretty printing library. + type Context = (Bool, Int, Int, Int) + type IText = Context -> [String] + text :: String -> IText just text + (~.) :: IText -> IText -> IText horizontal composition + (^.) :: IText -> IText -> IText vertical composition + separate :: [IText] -> IText separate by spaces + nest :: Int -> IText -> IText indent + pretty :: Int -> Int -> IText -> String format it + +* module QSort + Sort function using quicksort. + sortLe :: (a -> a -> Bool) -> [a] -> [a] sort le l sorts l with le as less than predicate + sort :: (Ord a) => [a] -> [a] sort l sorts l using the Ord class + +* module Random + Random numbers. + randomInts :: Int -> Int -> [Int] given two seeds gives a list of random Int + randomDoubles :: Int -> Int -> [Double] given two seeds gives a list of random Double + +* module RunDialogue + Test run programs of type Dialogue. + Only a few Requests are implemented, unfortunately not ReadChannel. + run :: Dialogue -> String just run the program, showing the output + runTrace :: Dialogue -> String run the program, showing each Request and Response + +* module Miranda + Functions found in the Miranda(tm) library. + +* module Printf + C printf style formatting. Handles same types as printf in C, but requires the arguments + to be tagged. Useful for formatting of floating point values. + data UPrintf = UChar Char | UString String | UInt Int | UInteger Integer | UFloat Float | UDouble Double + printf :: String -> [UPrintf] -> String convert arguments in the list according to the formatting string + + +* module Time + Manipulate time values (a Double with seconds since 1970). + -- year mon day hour min sec dec-sec weekday + data Time = Time Int Int Int Int Int Int Double Int + dblToTime :: Double -> Time convert a Double to a Time + timeToDbl :: Time -> Double convert a Time to a Double + timeToString :: Time -> String convert a Time to a readable String + +----- To add: + +Bytes +IO Library +Word oprtations +Time clock stuff +Lisp stuff: symbols + hashtables + strings + + + + + + diff --git a/progs/lib/hbc/Random.hs b/progs/lib/hbc/Random.hs new file mode 100644 index 0000000..269d6af --- /dev/null +++ b/progs/lib/hbc/Random.hs @@ -0,0 +1,52 @@ +{- + This module implements a (good) random number generator. + + The June 1988 (v31 #6) issue of the Communications of the ACM has an + article by Pierre L'Ecuyer called, "Efficient and Portable Combined + Random Number Generators". Here is the Portable Combined Generator of + L'Ecuyer for 32-bit computers. It has a period of roughly 2.30584e18. + + Transliterator: Lennart Augustsson +-} + +module Random(randomInts, randomDoubles) where +-- Use seeds s1 in 1..2147483562 and s2 in 1..2147483398 to generate +-- an infinite list of random Ints. +randomInts :: Int -> Int -> [Int] +randomInts s1 s2 = + if 1 <= s1 && s1 <= 2147483562 then + if 1 <= s2 && s2 <= 2147483398 then + rands s1 s2 + else + error "randomInts: Bad second seed." + else + error "randomInts: Bad first seed." + +rands :: Int -> Int -> [Int] +rands s1 s2 = + let + k = s1 `div` 53668 + s1' = 40014 * (s1 - k * 53668) - k * 12211 + s1'' = if s1' < 0 then s1' + 2147483563 else s1' + + k' = s2 `div` 52774 + s2' = 40692 * (s2 - k' * 52774) - k' * 3791 + s2'' = if s2' < 0 then s2' + 2147483399 else s2' + + z = s1'' - s2'' +{- + z' = if z < 1 then z + 2147483562 else z + + in z' : rands s1'' s2'' +-} +-- Use this instead; it is a little stricter and generates much better code + in if z < 1 then z + 2147483562 : rands s1'' s2'' + else z : rands s1'' s2'' + +-- For those of you who don't have fromInt +fromInt = fromInteger . toInteger + +-- Same values for s1 and s2 as above, generates an infinite +-- list of Doubles uniformly distibuted in (0,1). +randomDoubles :: Int -> Int -> [Double] +randomDoubles s1 s2 = map (\x -> fromInt x * 4.6566130638969828e-10) (randomInts s1 s2) diff --git a/progs/lib/hbc/Random.hu b/progs/lib/hbc/Random.hu new file mode 100644 index 0000000..9fff34e --- /dev/null +++ b/progs/lib/hbc/Random.hu @@ -0,0 +1,3 @@ +:output $LIBRARYBIN/ +:o= all +Random.hs diff --git a/progs/lib/hbc/Time.hs b/progs/lib/hbc/Time.hs new file mode 100644 index 0000000..29f3441 --- /dev/null +++ b/progs/lib/hbc/Time.hs @@ -0,0 +1,51 @@ +module Time(Time(..), dblToTime, timeToDbl, timeToString) where +-- year mon day hour min sec ... wday +data Time = Time Int Int Int Int Int Int Double Int deriving (Eq, Ord, Text) + +isleap :: Int -> Bool +isleap n = n `rem` 4 == 0 -- good enough for the UNIX time span + +daysin :: Int -> Int +daysin n = if isleap n then 366 else 365 + +monthlen :: Array (Bool, Int) Int +monthlen = array ((False, 1), (True, 12)) (zipWith3 (\ a b c -> (a,b):=c) (repeat False) [1..] [31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31] ++ + zipWith3 (\ a b c -> (a,b):=c) (repeat True) [1..] [31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31]) + +-- Time zone offset in minutes +tzOffset = 120 -- Swedish DST + +dblToTime :: Double -> Time +dblToTime d = + let t = truncate d :: Int + offset = tzOffset -- timezone + (days, rem) = (t+offset*60) `quotRem` (60*60*24) + (hour, rem') = rem `quotRem` (60*60) + (min, sec) = rem' `quotRem` 60 + wday = (days+3) `mod` 7 + (year, days')= until (\ (y, d) -> d < daysin y) (\ (y, d) -> (y+1, d - daysin y)) (1970, days) + (mon, day) = until (\ (m, d) -> d <= monthlen!(isleap year, m)) (\ (m, d) -> (m+1, d - monthlen!(isleap year, m))) (1, days') + in Time year mon (day+1) hour min sec (d - fromInt t) wday + +timeToDbl :: Time -> Double +timeToDbl (Time year mon day hour min sec sdec _) = + let year' = year - 1970 + offset = tzOffset -- timezone + days = year' * 365 + (year'+1) `div` 4 + + sum [monthlen!(isleap year, m) | m<-[1..mon-1]] + day - 1 + secs = ((days*24 + hour) * 60 + min - offset) * 60 + sec + in fromInt secs + sdec + +show2 :: Int -> String +show2 x = [chr (x `quot` 10 + ord '0'), chr (x `rem` 10 + ord '0')] + +weekdays = ["Mon","Tue","Wen","Thu","Fri","Sat","Sun"] + +timeToString :: Time -> String +timeToString (Time year mon day hour min sec sdec wday) = + show year ++ "-" ++ show2 mon ++ "-" ++ show2 day ++ " " ++ + show2 hour ++ ":" ++ show2 min ++ ":" ++ show2 sec ++ + tail (take 5 (show sdec)) ++ " " ++ weekdays!!wday + +-- For those of you who don't have fromInt +fromInt = fromInteger . toInteger diff --git a/progs/lib/hbc/Time.hu b/progs/lib/hbc/Time.hu new file mode 100644 index 0000000..01c8f64 --- /dev/null +++ b/progs/lib/hbc/Time.hu @@ -0,0 +1,3 @@ +:output $LIBRARYBIN/ +:o= all +Time.hs |