commit 2a91ab7efdb0152e6f81663222649e2edf51971e
author Yaowu Xu <yaowu@google.com> Mon Nov 06 15:12:17 2017 -0800
committer Yaowu Xu <yaowu@google.com> Tue Nov 07 15:50:39 2017 +0000
tree a668afcd32a808618915b4874eb4420f88f7b760
parent f452fdfe3d24ecbab54002a9bed9cb789b29b872

Avoid left shift of negative numbers

Change-Id: I21f956a83687ebaeab81577aabdbfed2ea2b4dd2

av1/common/cfl.c

diff --git a/av1/common/cfl.c b/av1/common/cfl.c
index fc15a7a..78f55e3 100644
--- a/av1/common/cfl.c
+++ b/av1/common/cfl.c
@@ -245,7 +245,8 @@
       }
       int avg_q3 = (sum_q3 + (1 << (num_pel_log2 - 1))) >> num_pel_log2;
       // Loss is never more than 1/2 (in Q3)
-      assert(abs((avg_q3 << num_pel_log2) - sum_q3) <= 1 << num_pel_log2 >> 1);
+      assert(abs((avg_q3 * (1 << num_pel_log2)) - sum_q3) <=
+             1 << num_pel_log2 >> 1);
 
       tx_pred_buf_q3 = pred_buf_q3;
       for (int t_j = 0; t_j < tx_height; t_j++) {