ref: 83664f457b8ea7c907fdd3c4a8f9c80358c66212
parent: bd28510ef97883bcdf0d76419cb19f86940355e2
author: Yaowu Xu <yaowu@google.com>
date: Thu Jan 3 04:00:30 EST 2013
make cost_coeffs() and tokenize_b() consistent Change-Id: I7cdb5c32a1400f88ec36d08ea982e38b77731602