code: def test_endian_float(self):
      if sys.byteorder == "little":
          self.assertIs(c_float.__ctype_le__, c_float)
          self.assertIs(c_float.__ctype_be__.__ctype_le__, c_float)
      else:
          self.assertIs(c_float.__ctype_be__, c_float)
          self.assertIs(c_float.__ctype_le__.__ctype_be__, c_float)
      s = c_float(math.pi)
      self.assertEqual(bin(struct.pack("f", math.pi)), bin(s))
      # Hm, what's the precision of a float compared to a double?
      self.assertAlmostEqual(s.value, math.pi, places=6)
      s = c_float.__ctype_le__(math.pi)
      self.assertAlmostEqual(s.value, math.pi, places=6)
      self.assertEqual(bin(struct.pack("<f", math.pi)), bin(s))
      s = c_float.__ctype_be__(math.pi)
      self.assertAlmostEqual(s.value, math.pi, places=6)
      self.assertEqual(bin(struct.pack(">f", math.pi)), bin(s))
  
imports: import binascii
  import ctypes
  import math
  import struct
  import sys
  import unittest
  from ctypes import Structure, Union, LittleEndianUnion, BigEndianUnion, BigEndianStructure, LittleEndianStructure, POINTER, sizeof, cast, c_byte, c_ubyte, c_char, c_wchar, c_void_p, c_short, c_ushort, c_int, c_uint, c_long, c_ulong, c_longlong, c_ulonglong, c_uint32, c_float, c_double
label_desc: Use image node_id 5 for calling the Test obj's underlying member method code with example usage: obj.test_endian_float() without return types