fold -w 73 rnd0.b91 | ./b91dec -vvm 89 | cmp rnd0.dat && echo PASSED || fail_exit
fold -w 71 rnd1.b91 | ./b91dec -vvm 73 | cmp rnd1.dat && echo PASSED || fail_exit
fold -w 73 rnd0.b91 | ./b91dec -vvm 89 | cmp rnd0.dat && echo PASSED || fail_exit
fold -w 71 rnd1.b91 | ./b91dec -vvm 73 | cmp rnd1.dat && echo PASSED || fail_exit