[Python-checkins] CVS: python/dist/src/Misc NEWS,1.226,1.227

[Tim Peters]

Update of /cvsroot/python/python/dist/src/Misc
In directory usw-pr-cvs1:/tmp/cvs-serv28101/python/Misc

Modified Files:
	NEWS 
Log Message:
Raise OverflowError when appropriate on long->float conversion.  Most of
the fiddling is simply due to that no caller of PyLong_AsDouble ever
checked for failure (so that's fixing old bugs).  PyLong_AsDouble is much
faster for big inputs now too, but that's more of a happy consequence
than a design goal.


Index: NEWS
===================================================================
RCS file: /cvsroot/python/python/dist/src/Misc/NEWS,v
retrieving revision 1.226
retrieving revision 1.227
diff -C2 -d -r1.226 -r1.227
*** NEWS	2001/09/04 03:25:44	1.226
--- NEWS	2001/09/04 05:14:19	1.227
***************
*** 4,7 ****
--- 4,10 ----
  Core
  
+ - Conversion of long to float now raises OverflowError if the long is too
+   big to represent as a C double.
+ 
  - The 3-argument builtin pow() no longer allows a third non-None argument
    if either of the first two arguments is a float, or if both are of
***************
*** 95,98 ****
--- 98,110 ----
  
  API
+ 
+ - Note that PyLong_AsDouble can fail!  This has always been true, but no
+   callers checked for it.  It's more likely to fail now, because overflow
+   errors are properly detected now.  The proper way to check:
+ 
+   double x = PyLong_AsDouble(some_long_object);
+   if (x == -1.0 && PyErr_Occurred()) {
+           /* The conversion failed. */
+   }
  
  - The GC API has been changed.  Extensions that use the old API will still