old_contents: # test parsing of floats
  
  inf = float('inf')
  
  # it shouldn't matter where the decimal point is if the exponent balances the value
  print(float('1234') - float('0.1234e4'))
  print(float('1.015625') - float('1015625e-6'))
  
  # very large integer part with a very negative exponent should cancel out
  print('%.4e' % float('9' * 60 + 'e-60'))
  print('%.4e' % float('9' * 60 + 'e-40'))
  
  # many fractional digits
  print(float('.' + '9' * 70))
  print(float('.' + '9' * 70 + 'e20'))
  print(float('.' + '9' * 70 + 'e-50') == float('1e-50'))
  
  # tiny fraction with large exponent
  print(float('.' + '0' * 60 + '1e10') == float('1e-51'))
  print(float('.' + '0' * 60 + '9e25') == float('9e-36'))
  print(float('.' + '0' * 60 + '9e40') == float('9e-21'))
  
  # ensure that accuracy is retained when value is close to a subnormal
  print(float('1.00000000000000000000e-37'))
  print(float('10.0000000000000000000e-38'))
  print(float('100.000000000000000000e-39'))
  
  # very large exponent literal
  print(float('1e4294967301'))
  print(float('1e-4294967301'))
  print(float('1e18446744073709551621'))
  print(float('1e-18446744073709551621'))
  
new_contents: # test parsing of floats
  
  inf = float('inf')
  
  # it shouldn't matter where the decimal point is if the exponent balances the value
  print(float('1234') - float('0.1234e4'))
  print(float('1.015625') - float('1015625e-6'))
  
  # very large integer part with a very negative exponent should cancel out
  print('%.4e' % float('9' * 60 + 'e-60'))
  print('%.4e' % float('9' * 60 + 'e-40'))
  
  # many fractional digits
  print(float('.' + '9' * 70))
  print(float('.' + '9' * 70 + 'e20'))
  print(float('.' + '9' * 70 + 'e-50') == float('1e-50'))
  
  # tiny fraction with large exponent
  print(float('.' + '0' * 60 + '1e10') == float('1e-51'))
  print(float('.' + '0' * 60 + '9e25') == float('9e-36'))
  print(float('.' + '0' * 60 + '9e40') == float('9e-21'))
  
  # ensure that accuracy is retained when value is close to a subnormal
  print(float('1.00000000000000000000e-37'))
  print(float('10.0000000000000000000e-38'))
  print(float('100.000000000000000000e-39'))
  
  # very large exponent literal
  print(float('1e4294967301'))
  print(float('1e-4294967301'))
  print(float('1e18446744073709551621'))
  print(float('1e-18446744073709551621'))
  
  # check small decimals are as close to their true value as possible
  for n in range(1, 10):
      print(float('0.%u' % n) == n / 10)
  
subject: Add tests for accuracy of small decimals.