diff options
Diffstat (limited to 'gr-fec/python/fec/bitflip.py')
| -rw-r--r-- | gr-fec/python/fec/bitflip.py | 73 |
1 files changed, 37 insertions, 36 deletions
diff --git a/gr-fec/python/fec/bitflip.py b/gr-fec/python/fec/bitflip.py index edd841ef14..a482152e54 100644 --- a/gr-fec/python/fec/bitflip.py +++ b/gr-fec/python/fec/bitflip.py @@ -9,63 +9,64 @@ # - - def bitreverse(mint): - res = 0; + res = 0 while mint != 0: - res = res << 1; - res += mint & 1; - mint = mint >> 1; - return res; + res = res << 1 + res += mint & 1 + mint = mint >> 1 + return res + + +const_lut = [2] +specinvert_lut = [[0, 2, 1, 3]] -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; + 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; + res += (bitflip_lut[(mint >> cnt) & (mask)]) << cnt + cnt += const_lut[index] + return res def read_bitlist(bitlist): - res = 0; + res = 0 for i in range(len(bitlist)): if int(bitlist[i]) == 1: - res += 1 << (len(bitlist) - i - 1); - return res; + res += 1 << (len(bitlist) - i - 1) + return res def read_big_bitlist(bitlist): ret = [] for j in range(0, len(bitlist) / 64): - res = 0; + 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; + 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]; + 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]; + 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; + retlist.append(symlist[0][i:] + symlist[0][0:i]) + return retlist |