Smith wrote: > ... There is a problem with dividing by 'ave' if the x and y are at > the floating point limits, but the symmetric behaving form (presented > by Scott Daniels) will have the same problem. Upon reflection, 'max' is probably better than averaging, and avoiding divide is also a reasonably good idea. Note that relative_tol < 1.0 (typically) so underflow, rather than overflow, is the issue:
def nearby(x, y, relative_tol=1.e-5, absolute_tol=1.e-8): difference = abs(x - y) return (difference <= absolute_tol or difference <= max(abs(x), abs(y)) * relative_tol) I use <=, since "zero-tolerance" should pass equal values. --Scott David Daniels [EMAIL PROTECTED] _______________________________________________ Python-Dev mailing list Python-Dev@python.org http://mail.python.org/mailman/listinfo/python-dev Unsubscribe: http://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com