Fixed rounding of negative numbers

pulse_lib/segments/utility/rounding.py

@@ -4,4 +4,4 @@ def iround(value):
     '''
     Fast implementation of round which uses half-up, i.s.o. half-even rounding.
     '''
-    return np.int_(value + 0.5)
+    return np.floor(value + 0.5).astype(int)