Integer -> Integer -> Integer,
Integer -> Int -> Integer,
Int -> Int -> Int #-}
+{-# INLINABLE (^) #-} -- See Note [Inlining (^)]
(^) :: (Num a, Integral b) => a -> b -> a
x0 ^ y0 | y0 < 0 = error "Negative exponent"
| y0 == 0 = 1
-- | raise a number to an integral power
(^^) :: (Fractional a, Integral b) => a -> b -> a
+{-# INLINABLE (^^) #-} -- See Note [Inlining (^)
x ^^ n = if n >= 0 then x^n else recip (x^(negate n))
+{- Note [Inlining (^)
+ ~~~~~~~~~~~~~~~~~~~~~
+ The INLINABLE pragma allows (^) to be specialised at its call sites.
+ If it is called repeatedly at the same type, that can make a huge
+ difference, because of those constants which can be repeatedly
+ calculated.
+
+ Currently the fromInteger calls are not floated because we get
+ \d1 d2 x y -> blah
+ after the gentle round of simplification. -}
+
-------------------------------------------------------
-- Special power functions for Rational
--