Add unRelStDev :: RelStDev -> Double

changelog.md

@@ -12,6 +12,7 @@
 * Decomission `debug` build flag.
 * Decomission warning when `--timeout` is absent.
 * Add `instance Eq RelStDev` and `instance Ord RelStDev`.
+* Add `unRelStDev :: RelStDev -> Double`.
 
 # 0.3.5
 

src/Test/Tasty/Bench.hs

@@ -788,7 +788,7 @@ type Progress = ()
 -- only once, use command-line option @--stdev@ @Infinity@.
 --
 -- @since 0.2
-newtype RelStDev = RelStDev Double
+newtype RelStDev = RelStDev { unRelStDev :: Double }
   deriving (Eq, Ord, Show, Read, Typeable)
 
 -- | Whether to measure CPU time or wall-clock time.