text: # test parsing of floats, requiring double-precision
  
  # very large integer part with a very negative exponent should cancel out
  print(float('9' * 400 + 'e-100'))
  print(float('9' * 400 + 'e-200'))
  print(float('9' * 400 + 'e-400'))
  
  # many fractional digits
  print(float('.' + '9' * 400))
  print(float('.' + '9' * 400 + 'e100'))
  print(float('.' + '9' * 400 + 'e-100'))
  
  # tiny fraction with large exponent
  print(float('.' + '0' * 400 + '9e100'))
  print(float('.' + '0' * 400 + '9e200'))
  print(float('.' + '0' * 400 + '9e400'))
  
  # ensure that accuracy is retained when value is close to a subnormal
  print(float('1.00000000000000000000e-307'))
  print(float('10.0000000000000000000e-308'))
  print(float('100.000000000000000000e-309'))
  