third_party/aom/test/divu_small_test.cc

   1 /*
   2  * Copyright (c) 2016, Alliance for Open Media. All rights reserved
   3  *
   4  * This source code is subject to the terms of the BSD 2 Clause License and
   5  * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
   6  * was not distributed with this source code in the LICENSE file, you can
   7  * obtain it at www.aomedia.org/license/software. If the Alliance for Open
   8  * Media Patent License 1.0 was not distributed with this source code in the
   9  * PATENTS file, you can obtain it at www.aomedia.org/license/patent.
  10  */
  11
  12 #include <stdlib.h>
  13
  14 #include "third_party/googletest/src/googletest/include/gtest/gtest.h"
  15
  16 #include "test/acm_random.h"
  17 #include "aom_dsp/odintrin.h"
  18
  19 using libaom_test::ACMRandom;
  20
  21 TEST(DivuSmallTest, TestDIVUuptoMAX) {
  22   for (int d = 1; d <= OD_DIVU_DMAX; d++) {
  23     for (uint32_t x = 1; x <= 1000000; x++) {
  24       GTEST_ASSERT_EQ(x / d, OD_DIVU_SMALL(x, d))
  25           << "x=" << x << " d=" << d << " x/d=" << (x / d)
  26           << " != " << OD_DIVU_SMALL(x, d);
  27     }
  28   }
  29 }
  30
  31 TEST(DivuSmallTest, TestDIVUrandI31) {
  32   ACMRandom rnd(ACMRandom::DeterministicSeed());
  33   for (int d = 1; d < OD_DIVU_DMAX; d++) {
  34     for (int i = 0; i < 1000000; i++) {
  35       uint32_t x = rnd.Rand31();
  36       GTEST_ASSERT_EQ(x / d, OD_DIVU_SMALL(x, d))
  37           << "x=" << x << " d=" << d << " x/d=" << (x / d)
  38           << " != " << OD_DIVU_SMALL(x, d);
  39     }
  40   }
  41 }