Replace (fromRational . toRational) with realToFrac everywhere.

[numerical-analysis.git] / src / Integration / Trapezoid.hs

diff --git a/src/Integration/Trapezoid.hs b/src/Integration/Trapezoid.hs
index 8d4b76903b04603a09ebb748e501582b4026b0c6..5452a5e8a5fe70195cf3de6711934dadd8cb623d 100644 (file)
--- a/src/Integration/Trapezoid.hs
+++ b/src/Integration/Trapezoid.hs
@@ -30,7 +30,7 @@ trapezoid_1 :: (RealFrac a, Fractional b, Num b)
             -> a       -- ^ The \"right\" endpoint, @b@
             -> b
 trapezoid_1 f a b =
-  (((f a) + (f b)) / 2) * (fromRational $ toRational (b - a))
+  (((f a) + (f b)) / 2) * (realToFrac (b - a))
 
 
 -- | Use the composite trapezoid rule to numerically integrate @f@