./ivltests/sf_onehot0_fail.v:7: error: constant function $onehot0() does not support a string argument (1).
./ivltests/sf_onehot0_fail.v:8: error: constant function $onehot0() does not support two arguments.
ERROR: ./ivltests/sf_onehot0_fail.v:6: $onehot0's argument must be numeric.
ERROR: ./ivltests/sf_onehot0_fail.v:7: $onehot0's argument must be numeric.
ERROR: ./ivltests/sf_onehot0_fail.v:8: $onehot0 takes a single numeric argument.
                                       Found 1 extra argument.