Exploring floating point values

floatstuff.py

import struct


def single_info(val):
  iee1754_val = struct.unpack('>I', struct.pack('>f', val))[0]
  exp = (iee1754_val & 0x7F80_0000) >> 23
  frac = iee1754_val & 0x007F_FFFF
  result = (2**(exp-127)) * (1+(frac/(2**23)))

  print('Single Precision:')
  print('%08x: %03x %05x' % (iee1754_val, exp, frac))
  print('%.60f' % result)

def double_info(val):
  iee1754_val = struct.unpack('>Q', struct.pack('>d', val))[0]
  exp = (iee1754_val & 0x7FF0_0000_0000_0000) >> 52
  frac = iee1754_val & 0x00F_FFFF_FFFF_FFFF
  result = (2**(exp-1023)) * (1+(frac/(2**52)))

  print('Double Precision:')
  print('%08x: %03x %05x' % (iee1754_val, exp, frac))
  print('%.60f' % result)