[project @ 1999-06-09 16:59:31 by simonmar]

Add a few SPECIALISE/INLINE pragmas.

ghc/lib/std/Complex.lhs

@@ -89,6 +89,8 @@ phase (x:+y)	 = atan2 y x
 
 \begin{code}
 instance  (RealFloat a) => Num (Complex a)  where
+    {-# SPECIALISE instance Num (Complex Float) #-}
+    {-# SPECIALISE instance Num (Complex Double) #-}
     (x:+y) + (x':+y')	=  (x+x') :+ (y+y')
     (x:+y) - (x':+y')	=  (x-x') :+ (y-y')
     (x:+y) * (x':+y')	=  (x*x'-y*y') :+ (x*y'+y*x')
@@ -99,6 +101,8 @@ instance  (RealFloat a) => Num (Complex a)  where
     fromInteger n	=  fromInteger n :+ 0
 
 instance  (RealFloat a) => Fractional (Complex a)  where
+    {-# SPECIALISE instance Fractional (Complex Float) #-}
+    {-# SPECIALISE instance Fractional (Complex Double) #-}
     (x:+y) / (x':+y')	=  (x*x''+y*y'') / d :+ (y*x''-x*y'') / d
 			   where x'' = scaleFloat k x'
 				 y'' = scaleFloat k y'
@@ -108,6 +112,8 @@ instance  (RealFloat a) => Fractional (Complex a)  where
     fromRational a	=  fromRational a :+ 0
 
 instance  (RealFloat a) => Floating (Complex a)	where
+    {-# SPECIALISE instance Floating (Complex Float) #-}
+    {-# SPECIALISE instance Floating (Complex Double) #-}
     pi             =  pi :+ 0
     exp (x:+y)     =  expx * cos y :+ expx * sin y
                       where expx = exp x

ghc/lib/std/PrelNumExtra.lhs

@@ -61,7 +61,14 @@ instance  Num Float  where
     signum x | x == 0.0	 = 0
 	     | x > 0.0	 = 1
 	     | otherwise = negate 1
+
+    {-# INLINE fromInteger #-}
     fromInteger n	=  encodeFloat n 0
+	-- It's important that encodeFloat inlines here, and that 
+	-- fromInteger in turn inlines,
+	-- so that if fromInteger is applied to an (S# i) the right thing happens
+
+    {-# INLINE fromInt #-}
     fromInt i		=  int2Float i
 
 instance  Real Float  where
@@ -144,6 +151,7 @@ foreign import ccall "__encodeFloat" unsafe
 foreign import ccall "__int_encodeFloat" unsafe 
 	int_encodeFloat# :: Int# -> Int -> Float
 
+
 foreign import ccall "isFloatNaN" unsafe isFloatNaN :: Float -> Int
 foreign import ccall "isFloatInfinite" unsafe isFloatInfinite :: Float -> Int
 foreign import ccall "isFloatDenormalized" unsafe isFloatDenormalized :: Float -> Int
@@ -210,6 +218,9 @@ instance  Num Double  where
     signum x | x == 0.0	 = 0
 	     | x > 0.0	 = 1
 	     | otherwise = negate 1
+
+    {-# INLINE fromInteger #-}
+	-- See comments with Num Float
     fromInteger n	=  encodeFloat n 0
     fromInt (I# n#)	=  case (int2Double# n#) of { d# -> D# d# }
 

ghc/lib/std/Prelude.lhs

@@ -102,7 +102,9 @@ down the compilation chain to "see" the Num class.
 \begin{code}
 -- sum and product compute the sum or product of a finite list of numbers.
 {-# SPECIALISE sum     :: [Int] -> Int #-}
+{-# SPECIALISE sum     :: [Integer] -> Integer #-}
 {-# SPECIALISE product :: [Int] -> Int #-}
+{-# SPECIALISE product :: [Integer] -> Integer #-}
 sum, product            :: (Num a) => [a] -> a
 #ifdef USE_REPORT_PRELUDE
 sum                     =  foldl (+) 0