[Zope-CVS] CVS: Products/ZCTextIndex - Index.py:1.1.2.30

[Tim Peters]

Update of /cvs-repository/Products/ZCTextIndex
In directory cvs.zope.org:/tmp/cvs-serv18382

Modified Files:
      Tag: TextIndexDS9-branch
	Index.py 
Log Message:
scaled_int():  Speed the rounding.  This function is called in
Index.search()'s innermost loop, and I noticed that it consumed about
0.4 seconds *just* to call scaled_int 55,000 times.


=== Products/ZCTextIndex/Index.py 1.1.2.29 => 1.1.2.30 ===
 
 def scaled_int(f, scale=SCALE_FACTOR):
-    return int(round(f * scale))
+    # We expect only positive inputs, so "add a half and chop" is the
+    # same as round().  Surprising, calling round() is significantly more
+    # expensive.
+    return int(f * scale + 0.5)
 
 class Index:
     __implements__ = IIndex