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#!/usr/bin/env python
#
# Copyright 2014 Free Software Foundation, Inc.
#
# This file is part of GNU Radio
#
# GNU Radio is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3, or (at your option)
# any later version.
#
# GNU Radio is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with GNU Radio; see the file COPYING. If not, write to
# the Free Software Foundation, Inc., 51 Franklin Street,
# Boston, MA 02110-1301, USA.
#
def bitreverse(mint):
res = 0;
while mint != 0:
res = res << 1;
res += mint & 1;
mint = mint >> 1;
return res;
const_lut = [2];
specinvert_lut = [[0, 2, 1, 3]];
def bitflip(mint, bitflip_lut, index, csize):
res = 0;
cnt = 0;
mask = (1 << const_lut[index]) - 1;
while (cnt < csize):
res += (bitflip_lut[(mint >> cnt) & (mask)]) << cnt;
cnt += const_lut[index];
return res;
def read_bitlist(bitlist):
res = 0;
for i in range(len(bitlist)):
if int(bitlist[i]) == 1:
res += 1 << (len(bitlist) - i - 1);
return res;
def read_big_bitlist(bitlist):
ret = []
for j in range(0, len(bitlist)/64):
res = 0;
for i in range(0, 64):
if int(bitlist[j*64+i]) == 1:
res += 1 << (64 - i - 1);
ret.append(res);
res = 0;
j = 0;
for i in range(len(bitlist)%64):
if int(bitlist[len(ret)*64+i]) == 1:
res += 1 << (64 - j - 1);
j += 1;
ret.append(res);
return ret;
def generate_symmetries(symlist):
retlist = []
if len(symlist) == 1:
for i in range(len(symlist[0])):
retlist.append(symlist[0][i:] + symlist[0][0:i]);
invlist = symlist[0];
for i in range(1, len(symlist[0])/2):
invlist[i] = symlist[0][i + len(symlist[0])/2];
invlist[i + len(symlist[0])/2] = symlist[0][i];
for i in range(len(symlist[0])):
retlist.append(symlist[0][i:] + symlist[0][0:i]);
return retlist;
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