[Python-checkins] CVS: python/dist/src/Objects longobject.c,1.100,1.101

[Tim Peters]

Update of /cvsroot/python/python/dist/src/Objects
In directory usw-pr-cvs1:/tmp/cvs-serv7743/python/Objects

Modified Files:
	longobject.c 
Log Message:
Try to recover from that glibc's ldexp apparently doesn't set errno on
overflow.  Needs testing on Linux (test_long.py and test_long_future.py
especially).


Index: longobject.c
===================================================================
RCS file: /cvsroot/python/python/dist/src/Objects/longobject.c,v
retrieving revision 1.100
retrieving revision 1.101
diff -C2 -d -r1.100 -r1.101
*** longobject.c	2001/09/04 06:17:36	1.100
--- longobject.c	2001/09/05 05:38:10	1.101
***************
*** 546,550 ****
  	errno = 0;
  	x = ldexp(x, e * SHIFT);
! 	if (errno == ERANGE)
  		goto overflow;
  	return x;
--- 546,550 ----
  	errno = 0;
  	x = ldexp(x, e * SHIFT);
! 	if (Py_OVERFLOWED(x))
  		goto overflow;
  	return x;
***************
*** 1608,1612 ****
  	errno = 0;
  	ad = ldexp(ad, aexp * SHIFT);
! 	if (ad != 0 && errno == ERANGE) /* ignore underflow to 0.0 */
  		goto overflow;
  	return PyFloat_FromDouble(ad);
--- 1608,1612 ----
  	errno = 0;
  	ad = ldexp(ad, aexp * SHIFT);
! 	if (Py_OVERFLOWED(ad)) /* ignore underflow to 0.0 */
  		goto overflow;
  	return PyFloat_FromDouble(ad);