tree 7e487c8c6b35345d71c50af0edcb3746a0846825
parent b979df56b68d1fd87dd6f2a15cb5e877747f1b57
author Kuang Fangjun <csukuangfj@gmail.com> 1537252775 +0800
committer Kuang Fangjun <csukuangfj@gmail.com> 1537252775 +0800

avoid recomputation.

f_a/g_a has already been computed and we can use it directly.

Change-Id: I39b07205c7d2486e88076089fa960f116919f27f