use rounding in scaledown by 2

unit_test/planar_test.cc

 /*
  *  Copyright 2011 The LibYuv Project Authors. All rights reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS. All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 1404 matching lines @@
               src_a + off, width,
               dst_y_opt + off, width,
               dst_u_opt + off, kStrideUV,
               dst_v_opt + off, kStrideUV,
               width, height);
   }
   for (int i = 0; i < width * height; ++i) {
     EXPECT_EQ(dst_y_c[i + off], dst_y_opt[i + off]);
   }
   for (int i = 0; i < kSizeUV; ++i) {
-    EXPECT_NEAR(dst_u_c[i + off], dst_u_opt[i + off], 1);  // Subsample off by 1
-    EXPECT_NEAR(dst_v_c[i + off], dst_v_opt[i + off], 1);
+    EXPECT_EQ(dst_u_c[i + off], dst_u_opt[i + off]);
+    EXPECT_EQ(dst_v_c[i + off], dst_v_opt[i + off]);
   }
   free_aligned_buffer_64(src_y0);
   free_aligned_buffer_64(src_u0);
   free_aligned_buffer_64(src_v0);
   free_aligned_buffer_64(src_y1);
   free_aligned_buffer_64(src_u1);
   free_aligned_buffer_64(src_v1);
   free_aligned_buffer_64(src_a);
   free_aligned_buffer_64(dst_y_c);
   free_aligned_buffer_64(dst_u_c);
@@ skipping 1203 matching lines @@
 
 TEST_F(LibYUVPlanarTest, SetPlane_Opt) {
   int max_diff = TestARGBRect(benchmark_width_, benchmark_height_,
                               benchmark_iterations_,
                               disable_cpu_flags_, benchmark_cpu_info_,
                               +1, 0, 1);
   EXPECT_EQ(0, max_diff);
 }
 
 }  // namespace libyuv