Fixed timer.wall_clock and timer.sum_wall_clock methods.

radixbug/bug.hh

@@ -247,9 +247,10 @@ class Timer
   double wall_clock()
   {
     radix_require(!mRunning);
+    auto nanoseconds =
+        std::chrono::duration_cast<std::chrono::nanoseconds>(mEnd - mStart);
     // 1e9 nanoseconds in a second
-    using seconds = std::chrono::duration<double, std::ratio<1000, 1>>;
-    return seconds(mEnd - mStart).count();
+    return nanoseconds.count() / 1e9;
   }
 
   /**
@@ -261,8 +262,7 @@ class Timer
   double sum_wall_clock()
   {
     // 1e9 nanoseconds in a second
-    using seconds = std::chrono::duration<double, std::ratio<1000, 1>>;
-    return seconds(mDuration).count();
+    return mDuration.count() / 1e9;
   }
 
   /**