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38 lines
852 B
Python
Executable File
38 lines
852 B
Python
Executable File
#!/usr/bin/env python
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__author__ = "bt3"
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''' Given a real number between 0 and 1 (eg: 0.72), this method print the binary
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representation. If the Number cannot be represented accurately in binary, with at
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most 32 chars, print error:
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'''
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def get_float_rep(num):
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'''
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>>> get_float_rep(0.72)
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('Error 2', '.1011100001010001111010111000010')
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>>> get_float_rep(0.1)
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('Error 2', '.0001100110011001100110011001100')
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>>> get_float_rep(0.5)
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'.1'
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'''
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if num >= 1 or num <= 0: return 'Error 1'
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result = '.'
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while num:
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if len(result) >= 32: return 'Error 2', result
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r = num*2
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if r >= 1:
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result += '1'
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num = r - 1
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else:
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result += '0'
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num = r
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return result
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if __name__ == '__main__':
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import doctest
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doctest.testmod()
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