2 # Copyright 2005,2007 Free Software Foundation, Inc.
4 # This file is part of GNU Radio
6 # GNU Radio is free software; you can redistribute it and/or modify
7 # it under the terms of the GNU General Public License as published by
8 # the Free Software Foundation; either version 3, or (at your option)
11 # GNU Radio is distributed in the hope that it will be useful,
12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 # GNU General Public License for more details.
16 # You should have received a copy of the GNU General Public License
17 # along with GNU Radio; see the file COPYING. If not, write to
18 # the Free Software Foundation, Inc., 51 Franklin Street,
19 # Boston, MA 02110-1301, USA.
22 from gnuradio import gr
26 def gen_and_append_crc32(s):
28 return s + struct.pack(">I", hexint(crc) & 0xFFFFFFFF)
34 #print "msg = '%s'" % (msg,)
35 actual = gr.crc32(msg)
36 (expected,) = struct.unpack(">I", s[-4:])
37 # print "actual =", hex(actual), "expected =", hex(expected)
38 return (actual == expected, msg)