From 678702573531f19ae36847a6a07257aaae623fbe Mon Sep 17 00:00:00 2001 From: Sadaf Ebrahimi Date: Fri, 25 Aug 2023 16:27:50 +0000 Subject: Move libyuv/files/ directly under libyuv Test: TreeHugger Merged-In: I773d1ae01539cc5d200768b526f10b2922567f72 Change-Id: I4ba1f1e781d7fd3ad96639dfdc08f654e45ae3d3 --- unit_test/math_test.cc | 160 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 160 insertions(+) create mode 100644 unit_test/math_test.cc (limited to 'unit_test/math_test.cc') diff --git a/unit_test/math_test.cc b/unit_test/math_test.cc new file mode 100644 index 00000000..a1544c12 --- /dev/null +++ b/unit_test/math_test.cc @@ -0,0 +1,160 @@ +/* + * Copyright 2013 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. + */ + +#include +#include +#include + +#include "../unit_test/unit_test.h" +#include "libyuv/basic_types.h" +#include "libyuv/cpu_id.h" +#include "libyuv/scale.h" + +#ifdef ENABLE_ROW_TESTS +#include "libyuv/scale_row.h" +#endif + +namespace libyuv { + +#ifdef ENABLE_ROW_TESTS +TEST_F(LibYUVBaseTest, TestFixedDiv) { + int num[1280]; + int div[1280]; + int result_opt[1280]; + int result_c[1280]; + + EXPECT_EQ(0x10000, libyuv::FixedDiv(1, 1)); + EXPECT_EQ(0x7fff0000, libyuv::FixedDiv(0x7fff, 1)); + // TODO(fbarchard): Avoid the following that throw exceptions. + // EXPECT_EQ(0x100000000, libyuv::FixedDiv(0x10000, 1)); + // EXPECT_EQ(0x80000000, libyuv::FixedDiv(0x8000, 1)); + + EXPECT_EQ(0x20000, libyuv::FixedDiv(640 * 2, 640)); + EXPECT_EQ(0x30000, libyuv::FixedDiv(640 * 3, 640)); + EXPECT_EQ(0x40000, libyuv::FixedDiv(640 * 4, 640)); + EXPECT_EQ(0x50000, libyuv::FixedDiv(640 * 5, 640)); + EXPECT_EQ(0x60000, libyuv::FixedDiv(640 * 6, 640)); + EXPECT_EQ(0x70000, libyuv::FixedDiv(640 * 7, 640)); + EXPECT_EQ(0x80000, libyuv::FixedDiv(640 * 8, 640)); + EXPECT_EQ(0xa0000, libyuv::FixedDiv(640 * 10, 640)); + EXPECT_EQ(0x20000, libyuv::FixedDiv(960 * 2, 960)); + EXPECT_EQ(0x08000, libyuv::FixedDiv(640 / 2, 640)); + EXPECT_EQ(0x04000, libyuv::FixedDiv(640 / 4, 640)); + EXPECT_EQ(0x20000, libyuv::FixedDiv(1080 * 2, 1080)); + EXPECT_EQ(0x20000, libyuv::FixedDiv(200000, 100000)); + EXPECT_EQ(0x18000, libyuv::FixedDiv(150000, 100000)); + EXPECT_EQ(0x20000, libyuv::FixedDiv(40000, 20000)); + EXPECT_EQ(0x20000, libyuv::FixedDiv(-40000, -20000)); + EXPECT_EQ(-0x20000, libyuv::FixedDiv(40000, -20000)); + EXPECT_EQ(-0x20000, libyuv::FixedDiv(-40000, 20000)); + EXPECT_EQ(0x10000, libyuv::FixedDiv(4095, 4095)); + EXPECT_EQ(0x10000, libyuv::FixedDiv(4096, 4096)); + EXPECT_EQ(0x10000, libyuv::FixedDiv(4097, 4097)); + EXPECT_EQ(123 * 65536, libyuv::FixedDiv(123, 1)); + + for (int i = 1; i < 4100; ++i) { + EXPECT_EQ(0x10000, libyuv::FixedDiv(i, i)); + EXPECT_EQ(0x20000, libyuv::FixedDiv(i * 2, i)); + EXPECT_EQ(0x30000, libyuv::FixedDiv(i * 3, i)); + EXPECT_EQ(0x40000, libyuv::FixedDiv(i * 4, i)); + EXPECT_EQ(0x08000, libyuv::FixedDiv(i, i * 2)); + EXPECT_NEAR(16384 * 65536 / i, libyuv::FixedDiv(16384, i), 1); + } + EXPECT_EQ(123 * 65536, libyuv::FixedDiv(123, 1)); + + MemRandomize(reinterpret_cast(&num[0]), sizeof(num)); + MemRandomize(reinterpret_cast(&div[0]), sizeof(div)); + for (int j = 0; j < 1280; ++j) { + if (div[j] == 0) { + div[j] = 1280; + } + num[j] &= 0xffff; // Clamp to avoid divide overflow. + } + for (int i = 0; i < benchmark_pixels_div1280_; ++i) { + for (int j = 0; j < 1280; ++j) { + result_opt[j] = libyuv::FixedDiv(num[j], div[j]); + } + } + for (int j = 0; j < 1280; ++j) { + result_c[j] = libyuv::FixedDiv_C(num[j], div[j]); + EXPECT_NEAR(result_c[j], result_opt[j], 1); + } +} + +TEST_F(LibYUVBaseTest, TestFixedDiv_Opt) { + int num[1280]; + int div[1280]; + int result_opt[1280]; + int result_c[1280]; + + MemRandomize(reinterpret_cast(&num[0]), sizeof(num)); + MemRandomize(reinterpret_cast(&div[0]), sizeof(div)); + for (int j = 0; j < 1280; ++j) { + num[j] &= 4095; // Make numerator smaller. + div[j] &= 4095; // Make divisor smaller. + if (div[j] == 0) { + div[j] = 1280; + } + } + + int has_x86 = TestCpuFlag(kCpuHasX86); + for (int i = 0; i < benchmark_pixels_div1280_; ++i) { + if (has_x86) { + for (int j = 0; j < 1280; ++j) { + result_opt[j] = libyuv::FixedDiv(num[j], div[j]); + } + } else { + for (int j = 0; j < 1280; ++j) { + result_opt[j] = libyuv::FixedDiv_C(num[j], div[j]); + } + } + } + for (int j = 0; j < 1280; ++j) { + result_c[j] = libyuv::FixedDiv_C(num[j], div[j]); + EXPECT_NEAR(result_c[j], result_opt[j], 1); + } +} + +TEST_F(LibYUVBaseTest, TestFixedDiv1_Opt) { + int num[1280]; + int div[1280]; + int result_opt[1280]; + int result_c[1280]; + + MemRandomize(reinterpret_cast(&num[0]), sizeof(num)); + MemRandomize(reinterpret_cast(&div[0]), sizeof(div)); + for (int j = 0; j < 1280; ++j) { + num[j] &= 4095; // Make numerator smaller. + div[j] &= 4095; // Make divisor smaller. + if (div[j] <= 1) { + div[j] = 1280; + } + } + + int has_x86 = TestCpuFlag(kCpuHasX86); + for (int i = 0; i < benchmark_pixels_div1280_; ++i) { + if (has_x86) { + for (int j = 0; j < 1280; ++j) { + result_opt[j] = libyuv::FixedDiv1(num[j], div[j]); + } + } else { + for (int j = 0; j < 1280; ++j) { + result_opt[j] = libyuv::FixedDiv1_C(num[j], div[j]); + } + } + } + for (int j = 0; j < 1280; ++j) { + result_c[j] = libyuv::FixedDiv1_C(num[j], div[j]); + EXPECT_NEAR(result_c[j], result_opt[j], 1); + } +} +#endif // ENABLE_ROW_TESTS + +} // namespace libyuv -- cgit v1.2.3