Remove biasedUniformIntegerM

System/Random.hs

@@ -143,9 +143,6 @@ module System.Random
   , splitPrimGen
   , applyPrimGen
 
-  -- FIXME: remove
-  , biasedUniformIntegerM
-
   -- ** The global random number generator
 
   -- $globalrng
@@ -1073,25 +1070,6 @@ randomIvalInteger (l,h) rng
                         (x,g') = next g
                         v' = (v * b + (fromIntegral x - fromIntegral genlo))
 
-biasedUniformIntegerM :: (MonadRandom g m) => (Integer, Integer) -> g -> m Integer
-biasedUniformIntegerM (l, h) gen
-  | l > h = biasedUniformIntegerM (h, l) gen
-  | otherwise = do
-    v <- f 1 0
-    pure (l + v `mod` k)
-  where
-    b = toInteger (maxBound :: Word64)
-    q = 1000
-    k = h - l + 1
-    magtgt = k * q
-    -- generate random values until we exceed the target magnitude
-    f mag v
-      | mag >= magtgt = pure v
-      | otherwise = do
-        x <- uniformWord64 gen
-        let v' = v * b + fromIntegral x
-        v' `seq` f (mag * b) v'
-
 -- | Generate an 'Integer' in the range @[l, h]@ if @l <= h@ and @[h, l]@
 -- otherwise.
 uniformIntegerM :: (MonadRandom g m) => (Integer, Integer) -> g -> m Integer