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-rw-r--r--testsuite/tests/dph/quickhull/Main.hs43
-rw-r--r--testsuite/tests/dph/quickhull/Makefile3
-rw-r--r--testsuite/tests/dph/quickhull/QuickHullVect.hs41
-rw-r--r--testsuite/tests/dph/quickhull/SVG.hs34
-rw-r--r--testsuite/tests/dph/quickhull/TestData.hs92
-rw-r--r--testsuite/tests/dph/quickhull/Types.hs32
-rw-r--r--testsuite/tests/dph/quickhull/dph-quickhull-fast.stdout1019
-rw-r--r--testsuite/tests/dph/quickhull/dph-quickhull-opt.stdout1019
-rw-r--r--testsuite/tests/dph/quickhull/dph-quickhull.T20
9 files changed, 2303 insertions, 0 deletions
diff --git a/testsuite/tests/dph/quickhull/Main.hs b/testsuite/tests/dph/quickhull/Main.hs
new file mode 100644
index 0000000000..ec59390850
--- /dev/null
+++ b/testsuite/tests/dph/quickhull/Main.hs
@@ -0,0 +1,43 @@
+
+import qualified Types as QH
+import QuickHullVect (quickhull)
+
+import qualified Data.Array.Parallel.Unlifted as U
+import qualified Data.Array.Parallel.Prelude as P
+
+import qualified Data.Array.Parallel.PArray as P
+import Data.Array.Parallel.PArray (PArray)
+
+import System.Environment
+import Data.List
+
+import SVG
+import TestData
+
+
+-----
+runQuickhull :: PArray QH.Point -> [(Double, Double)]
+runQuickhull pts
+ = let result = quickhull pts
+ resxs = P.toUArrPA (QH.xsOf result)
+ resys = P.toUArrPA (QH.ysOf result)
+ in resxs U.!: 0 `seq` (zip (U.toList resxs) (U.toList resys))
+
+
+-- Main Program ---------------------------------------------------------------
+main
+ = do args <- getArgs
+ let n = case args of
+ [s] -> read s
+ _ -> 1000
+
+ paInput <- toPArrayPoints
+ $ genPointsCombo n
+
+ let psHull = runQuickhull paInput
+ psInput = P.toList paInput
+
+ putStr
+ $ makeSVG
+ (roundPoints psInput)
+ (roundPoints psHull)
diff --git a/testsuite/tests/dph/quickhull/Makefile b/testsuite/tests/dph/quickhull/Makefile
new file mode 100644
index 0000000000..9101fbd40a
--- /dev/null
+++ b/testsuite/tests/dph/quickhull/Makefile
@@ -0,0 +1,3 @@
+TOP=../../..
+include $(TOP)/mk/boilerplate.mk
+include $(TOP)/mk/test.mk
diff --git a/testsuite/tests/dph/quickhull/QuickHullVect.hs b/testsuite/tests/dph/quickhull/QuickHullVect.hs
new file mode 100644
index 0000000000..29aaa4a823
--- /dev/null
+++ b/testsuite/tests/dph/quickhull/QuickHullVect.hs
@@ -0,0 +1,41 @@
+{-# LANGUAGE ParallelArrays #-}
+{-# OPTIONS -fvectorise #-}
+
+module QuickHullVect (quickhull) where
+
+import Types
+
+import Data.Array.Parallel
+import Data.Array.Parallel.Prelude.Double
+import qualified Data.Array.Parallel.Prelude.Int as Int
+
+import qualified Prelude as P
+
+distance :: Point -> Line -> Double
+distance (xo, yo) ((x1, y1), (x2, y2))
+ = (x1-xo) * (y2 - yo) - (y1 - yo) * (x2 - xo)
+
+hsplit :: [:Point:] -> Line -> [:Point:]
+hsplit points line@(p1, p2)
+ | lengthP packed Int.< 2 = singletonP p1 +:+ packed
+ | otherwise
+ = concatP [: hsplit packed ends | ends <- [:(p1, pm), (pm, p2):] :]
+ where
+ cross = [: distance p line | p <- points :]
+ packed = [: p | (p,c) <- zipP points cross, c > 0.0 :]
+ pm = points !: maxIndexP cross
+
+quickHull' :: [:Point:] -> [:Point:]
+quickHull' points
+ | lengthP points Int.== 0 = points
+ | otherwise
+ = concatP [: hsplit points ends | ends <- [: (minx, maxx), (maxx, minx) :] :]
+ where
+ xs = [: x | (x, y) <- points :]
+ minx = points !: minIndexP xs
+ maxx = points !: maxIndexP xs
+
+quickhull :: PArray Point -> PArray Point
+{-# NOINLINE quickhull #-}
+quickhull ps = toPArrayP (quickHull' (fromPArrayP ps))
+
diff --git a/testsuite/tests/dph/quickhull/SVG.hs b/testsuite/tests/dph/quickhull/SVG.hs
new file mode 100644
index 0000000000..f4183a77d6
--- /dev/null
+++ b/testsuite/tests/dph/quickhull/SVG.hs
@@ -0,0 +1,34 @@
+
+module SVG where
+
+-- Making a SVG diagram of the points and hull
+makeSVG :: [(Int, Int)] -> [(Int, Int)] -> String
+makeSVG points hull
+ = unlines
+ $ [ "<svg width=\"100%\" height=\"100%\" version=\"1.1\" xmlns=\"http://www.w3.org/2000/svg\">" ]
+ ++ [svgPolygon hull]
+ ++ map svgPoint points
+ ++ map svgPointHull hull
+ ++ ["</svg>"]
+
+svgPolygon :: [(Int, Int)] -> String
+svgPolygon points
+ = "<polygon"
+ ++ " points=\"" ++ (concat [show x ++ "," ++ show y ++ " " | (x, y) <- points]) ++ "\""
+ ++ " style=\"fill:#d0d0ff;stroke:#000000;stroke-width:1\""
+ ++ "/>"
+
+svgPoint :: (Int, Int) -> String
+svgPoint (x, y)
+ = "<circle cx=\"" ++ show x ++ "\" cy=\"" ++ show y ++ "\" r=\"0.5\""
+ ++ " style=\"stroke:#000000\""
+ ++ "/>"
+
+svgPointHull :: (Int, Int) -> String
+svgPointHull (x, y)
+ = "<circle cx=\"" ++ show x ++ "\" cy=\"" ++ show y ++ "\" r=\"1\""
+ ++ " style=\"stroke:#ff0000\""
+ ++ "/>"
+
+roundPoints :: [(Double, Double)] -> [(Int, Int)]
+roundPoints ps = [(round x, round y) | (x, y) <- ps]
diff --git a/testsuite/tests/dph/quickhull/TestData.hs b/testsuite/tests/dph/quickhull/TestData.hs
new file mode 100644
index 0000000000..6317927259
--- /dev/null
+++ b/testsuite/tests/dph/quickhull/TestData.hs
@@ -0,0 +1,92 @@
+
+module TestData
+ ( genPointsUniform
+ , genPointsDisc
+ , genPointsCombo
+ , toPArrayPoints )
+where
+
+import qualified Types as QH
+import qualified Data.Array.Parallel.Unlifted as U
+import qualified Data.Array.Parallel.Prelude as P
+import qualified Data.Array.Parallel.Prelude.Double as D
+import qualified Data.Array.Parallel.PArray as P
+import Data.Array.Parallel.PArray (PArray)
+
+import System.Random
+import Control.Exception
+
+-- Random points generation
+-- IMPORTANT: We use the same seed with the same random generator in all
+-- quickhull codes. The asymptotic work complexity of quickhull
+-- is between O (N) and O (N^2) depending on the input.
+-- To compare benchmark results, they always need to use the same
+-- input.
+seed = 42742
+
+-- | Some uniformly distributed points
+genPointsUniform
+ :: Int -- ^ number of points
+ -> Double -- ^ minimum coordinate
+ -> Double -- ^ maximum coordinate
+ -> [(Double, Double)]
+
+genPointsUniform n minXY maxXY
+ = let
+ pointMin = 10
+ pointMax = 510
+ gen = mkStdGen seed
+ in toPairs $ take (2*n) $ randomRs (pointMin, pointMax) gen
+
+toPairs [] = []
+toPairs (x:y:pts) = (x, y) : toPairs pts
+
+
+-- | Some points distributed as a disc
+genPointsDisc
+ :: Int -- ^ number of points
+ -> (Double, Double) -- ^ center of disc
+ -> Double -- ^ radius of disc
+ -> [(Double, Double)]
+
+genPointsDisc n (originX, originY) radiusMax
+ = let (genRadius, genAngle)
+ = split $ mkStdGen seed
+
+ radius = take n $ randomRs (0, radiusMax) genRadius
+ angle = take n $ randomRs (- pi, pi) genAngle
+
+ makeXY (r, a)
+ = ( originX + r * cos a
+ , originY + r * sin a)
+
+ in map makeXY $ zip radius angle
+
+
+-- | A point cloud with areas of high an low density
+genPointsCombo
+ :: Int -- ^ number of points
+ -> [(Double, Double)]
+
+genPointsCombo n
+ = genPointsDisc (n `div` 5) (250, 250) 200
+ ++ genPointsDisc (n `div` 5) (100, 100) 80
+ ++ genPointsDisc (n `div` 5) (150, 300) 30
+ ++ genPointsDisc (n `div` 5) (500, 120) 30
+ ++ genPointsDisc (n `div` 5) (300, 200) 150
+
+
+-- | Convert a list of points to a PArray
+toPArrayPoints :: [(Double, Double)] -> IO (PArray QH.Point)
+toPArrayPoints ps
+ = do let pts = QH.points (P.fromList (map fst ps))
+ (P.fromList (map snd ps))
+ evaluate $ force pts
+ return pts
+
+-- | Force points to be evaluated
+force pts
+ = P.toUArrPA (QH.xsOf pts) U.!: 0 D.+
+ P.toUArrPA (QH.ysOf pts) U.!: 0
+
+
diff --git a/testsuite/tests/dph/quickhull/Types.hs b/testsuite/tests/dph/quickhull/Types.hs
new file mode 100644
index 0000000000..162458f424
--- /dev/null
+++ b/testsuite/tests/dph/quickhull/Types.hs
@@ -0,0 +1,32 @@
+{-# LANGUAGE ParallelArrays #-}
+{-# OPTIONS -fvectorise #-}
+
+module Types ( Point, Line, points, xsOf, ysOf) where
+
+import Data.Array.Parallel
+
+type Point = (Double, Double)
+type Line = (Point, Point)
+
+points' :: [:Double:] -> [:Double:] -> [:Point:]
+points' = zipP
+
+points :: PArray Double -> PArray Double -> PArray Point
+{-# NOINLINE points #-}
+points xs ys = toPArrayP (points' (fromPArrayP xs) (fromPArrayP ys))
+
+xsOf' :: [:Point:] -> [:Double:]
+xsOf' ps = [: x | (x, _) <- ps :]
+
+xsOf :: PArray Point -> PArray Double
+{-# NOINLINE xsOf #-}
+xsOf ps = toPArrayP (xsOf' (fromPArrayP ps))
+
+ysOf' :: [:Point:] -> [:Double:]
+ysOf' ps = [: y | (_, y) <- ps :]
+
+ysOf :: PArray Point -> PArray Double
+{-# NOINLINE ysOf #-}
+ysOf ps = toPArrayP (ysOf' (fromPArrayP ps))
+
+
diff --git a/testsuite/tests/dph/quickhull/dph-quickhull-fast.stdout b/testsuite/tests/dph/quickhull/dph-quickhull-fast.stdout
new file mode 100644
index 0000000000..f6b2d92e9a
--- /dev/null
+++ b/testsuite/tests/dph/quickhull/dph-quickhull-fast.stdout
@@ -0,0 +1,1019 @@
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+<polygon points="20,98 50,246 83,354 164,416 236,434 343,427 366,412 379,402 519,143 528,126 529,115 510,96 506,95 117,33 85,28 40,64 " style="fill:#d0d0ff;stroke:#000000;stroke-width:1"/>
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diff --git a/testsuite/tests/dph/quickhull/dph-quickhull.T b/testsuite/tests/dph/quickhull/dph-quickhull.T
new file mode 100644
index 0000000000..f1a1debe3f
--- /dev/null
+++ b/testsuite/tests/dph/quickhull/dph-quickhull.T
@@ -0,0 +1,20 @@
+
+test ('dph-quickhull-opt'
+ , [ alone
+ , skip_if_fast
+ , reqlib('dph-par')
+ , reqlib('dph-prim-par')
+ , only_ways(['normal', 'threaded1', 'threaded2']) ]
+ , multimod_compile_and_run
+ , [ 'Main'
+ , '-Odph -funfolding-use-threshold30 -fdph-par'])
+
+test ('dph-quickhull-fast'
+ , [ reqlib('dph-par')
+ , reqlib('dph-prim-par')
+ , only_ways(['normal', 'threaded1', 'threaded2']) ]
+ , multimod_compile_and_run
+ , [ 'Main'
+ , '-O -fno-enable-rewrite-rules -fdph-par'])
+
+