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- #!/usr/bin/env python
- # encoding: utf-8
- #
- # Copyright (c) 2010 Doug Hellmann. All rights reserved.
- #
- """Testing for not-a-number.
- """
- #end_pymotw_header
- import math
- x = (10.0 ** 200) * (10.0 ** 200)
- y = x/x
- print 'x =', x
- print 'isnan(x) =', math.isnan(x)
- print 'y = x / x =', x/x
- print 'y == nan =', y == float('nan')
- print 'isnan(y) =', math.isnan(y)
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