#!/usr/bin/env python3
#
# This script computes a table that maps each byte to its bitwise reverse.
def reverse_byte(v):
return sum(1 << (7 - bit) for bit in range(8) if (v & (1 << bit)) != 0)
tab = [reverse_byte(v) for v in range(256)]
print('static const u8 bitreverse_tab[256] = {')
for i in range(0, len(tab), 8):
print('\t', end='')
for j, v in enumerate(tab[i:i+8]):
print(f'0x{v:02x},', end='')
if j == 7:
print('')
else:
print(' ', end='')
print('};')