[Python-checkins] CVS: python/dist/src/Lib/test test_complex.py,1.3,1.3.2.1

[Tim Peters]

Update of /cvsroot/python/python/dist/src/Lib/test
In directory usw-pr-cvs1:/tmp/cvs-serv29574

Modified Files:
      Tag: r22a3-branch
	test_complex.py 
Log Message:
Reverting to rev 1.2.  Apparently gcc doesn't use the extended-precision
capabilities of the Pentium FPU, so what should have been (and were on
Windows) exact results got fuzzy.  Then it turns out test_support.fcmp()
isn't tolerant of tiny errors when *one* of the comparands is 0, but
test_complex's old check_close_real() is.  Rather than fix gcc <wink>,
easier to revert this test and revisit after the release.


Index: test_complex.py
===================================================================
RCS file: /cvsroot/python/python/dist/src/Lib/test/test_complex.py,v
retrieving revision 1.3
retrieving revision 1.3.2.1
diff -C2 -d -r1.3 -r1.3.2.1
*** test_complex.py	2001/09/06 22:07:50	1.3
--- test_complex.py	2001/09/06 23:01:38	1.3.2.1
***************
*** 1,3 ****
! from test_support import TestFailed, fcmp
  from random import random
  
--- 1,3 ----
! from test_support import TestFailed
  from random import random
  
***************
*** 6,12 ****
  nerrors = 0
  
! def check_close(x, y):
      """Return true iff complexes x and y "are close\""""
!     return fcmp(x.real, y.real) == 0 == fcmp(x.imag, y.imag)
  
  def test_div(x, y):
--- 6,25 ----
  nerrors = 0
  
! def check_close_real(x, y, eps=1e-9):
!     """Return true iff floats x and y "are close\""""
!     # put the one with larger magnitude second
!     if abs(x) > abs(y):
!         x, y = y, x
!     if y == 0:
!         return abs(x) < eps
!     if x == 0:
!         return abs(y) < eps
!     # check that relative difference < eps
!     return abs((x-y)/y) < eps
! 
! def check_close(x, y, eps=1e-9):
      """Return true iff complexes x and y "are close\""""
!     return check_close_real(x.real, y.real, eps) and \
!            check_close_real(x.imag, y.imag, eps)
  
  def test_div(x, y):