EXPECT_EQ(8u, RoundUpToAlignment(5, 8));
EXPECT_EQ(24u, RoundUpToAlignment(17, 8));
EXPECT_EQ(0u, RoundUpToAlignment(~0LL, 8));
+
+ EXPECT_EQ(7u, RoundUpToAlignment(5, 8, 7));
+ EXPECT_EQ(17u, RoundUpToAlignment(17, 8, 1));
+ EXPECT_EQ(3u, RoundUpToAlignment(~0LL, 8, 3));
+ EXPECT_EQ(552u, RoundUpToAlignment(321, 255, 42));
+}
+
+template<typename T>
+void SaturatingAddTestHelper()
+{
+ EXPECT_EQ(static_cast<T>(3),
+ SaturatingAdd(static_cast<T>(1), static_cast<T>(2)));
+ EXPECT_EQ(std::numeric_limits<T>::max(),
+ SaturatingAdd(std::numeric_limits<T>::max(), static_cast<T>(1)));
+ EXPECT_EQ(std::numeric_limits<T>::max(),
+ SaturatingAdd(static_cast<T>(1), std::numeric_limits<T>::max()));
+ EXPECT_EQ(std::numeric_limits<T>::max(),
+ SaturatingAdd(std::numeric_limits<T>::max(),
+ std::numeric_limits<T>::max()));
+}
+
+TEST(MathExtras, SaturatingAdd) {
+ SaturatingAddTestHelper<uint8_t>();
+ SaturatingAddTestHelper<uint16_t>();
+ SaturatingAddTestHelper<uint32_t>();
+ SaturatingAddTestHelper<uint64_t>();
+}
+
+template<typename T>
+void SaturatingMultiplyTestHelper()
+{
+ EXPECT_EQ(static_cast<T>(0),
+ SaturatingMultiply(static_cast<T>(1), static_cast<T>(0)));
+ EXPECT_EQ(static_cast<T>(0),
+ SaturatingMultiply(static_cast<T>(0), static_cast<T>(1)));
+ EXPECT_EQ(static_cast<T>(6),
+ SaturatingMultiply(static_cast<T>(2), static_cast<T>(3)));
+ EXPECT_EQ(std::numeric_limits<T>::max(),
+ SaturatingMultiply(std::numeric_limits<T>::max(),
+ static_cast<T>(2)));
+ EXPECT_EQ(std::numeric_limits<T>::max(),
+ SaturatingMultiply(static_cast<T>(2),
+ std::numeric_limits<T>::max()));
+ EXPECT_EQ(std::numeric_limits<T>::max(),
+ SaturatingMultiply(std::numeric_limits<T>::max(),
+ std::numeric_limits<T>::max()));
+}
+
+TEST(MathExtras, SaturatingMultiply) {
+ SaturatingMultiplyTestHelper<uint8_t>();
+ SaturatingMultiplyTestHelper<uint16_t>();
+ SaturatingMultiplyTestHelper<uint32_t>();
+ SaturatingMultiplyTestHelper<uint64_t>();
}
}