Add unRelStDev :: RelStDev -> Double

changelog.md

@@ -11,6 +11,8 @@
 * Make `IO` benchmarks immune to `-fspec-constr-count` limit.
 * 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

@@ -788,8 +788,8 @@ type Progress = ()
 -- only once, use command-line option @--stdev@ @Infinity@.
 --
 -- @since 0.2
-newtype RelStDev = RelStDev Double
-  deriving (Show, Read, Typeable)
+newtype RelStDev = RelStDev { unRelStDev :: Double }
+  deriving (Eq, Ord, Show, Read, Typeable)
 
 -- | Whether to measure CPU time or wall-clock time.
 -- Normally 'CpuTime' is a better option (and default),