#!/usr/bin/env python
     # encoding: utf-8
     #
     # Copyright (c) 2010 Doug Hellmann.  All rights reserved.
     #
     """log10 example
     """
     #end_pymotw_header
     
     import math
     
     print '{:2}  {:^12}  {:^20}  {:^20}  {:8}'.format('i', 'x', 'accurate', 'inaccurate', 'mismatch')
     print '{:-^2}  {:-^12}  {:-^20}  {:-^20}  {:-^8}'.format('', '', '', '', '')
     
     for i in range(0, 10):
         x = math.pow(10, i)
         accurate = math.log10(x)
         inaccurate = math.log(x, 10)
         match = '' if int(inaccurate) == i else '*'
         print '{:2d}  {:12.1f}  {:20.18f}  {:20.18f}  {:^5}'.format(i, x, accurate, inaccurate, match)