diff --git a/System/Clock.hsc b/System/Clock.hsc
--- a/System/Clock.hsc
+++ b/System/Clock.hsc
@@ -198,3 +198,7 @@
 -- | Compute the absolute difference.
 diffTimeSpec :: TimeSpec -> TimeSpec -> TimeSpec
 diffTimeSpec ts1 ts2 = abs (ts1 - ts2)
+
+-- | TimeSpec as nano seconds.
+timeSpecAsNanoSecs :: TimeSpec -> Integer
+timeSpecAsNanoSecs t = toInteger (sec t) * 1000000000 + toInteger (nsec t)
diff --git a/clock.cabal b/clock.cabal
--- a/clock.cabal
+++ b/clock.cabal
@@ -1,5 +1,5 @@
 name:          clock
-version:       0.4.2.0
+version:       0.4.3.0
 stability:     stable
 synopsis:      High-resolution clock functions: monotonic, realtime, cputime.
 description:   A package for convenient access to high-resolution clock and
@@ -19,12 +19,14 @@
                .
                Windows code corrected by Dimitri Sabadie on 2015-02-09.
                .
+               Added @timeSpecAsNanoSecs@ as observed widely-used by Chris Done on 2015-01-06.
+               .
                [Version Scheme]
                Major-@/R/@-ewrite . New-@/F/@-unctionality . @/I/@-mprovementAndBugFixes . @/P/@-ackagingOnly
                .
                * @PackagingOnly@ changes are made for quality assurance reasons.
 
-copyright:     Copyright © Cetin Sert 2009-2013, Eugene Kirpichov 2010, Finn Espen Gundersen 2013, Gerolf Seitz 2013, Mathieu Boespflug 2014, Dimitri Sabadie 2015
+copyright:     Copyright © Cetin Sert 2009-2013, Eugene Kirpichov 2010, Finn Espen Gundersen 2013, Gerolf Seitz 2013, Mathieu Boespflug 2014, Chris Done 2015, Dimitri Sabadie 2015
 license:       BSD3
 license-file:  LICENSE
 author:        Cetin Sert <cetin@corsis.eu>, Corsis Research