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extern/gltf-draco/draco/src/draco/core/math_utils_test.cc
- This file was added.
| #include "draco/core/math_utils.h" | |||||
| #include <random> | |||||
| #include "draco/core/draco_test_base.h" | |||||
| TEST(MathUtils, Mod) { EXPECT_EQ(DRACO_INCREMENT_MOD(1, 1 << 1), 0); } | |||||
| TEST(MathUtils, IntSqrt) { | |||||
| ASSERT_EQ(IntSqrt(0), 0); | |||||
| // 64-bit pseudo random number generator seeded with a predefined number. | |||||
| std::mt19937_64 generator(109); | |||||
| std::uniform_int_distribution<uint64_t> distribution(0, 1ull << 60); | |||||
| for (int i = 0; i < 10000; ++i) { | |||||
| const uint64_t number = distribution(generator); | |||||
| ASSERT_EQ(IntSqrt(number), static_cast<uint64_t>(floor(std::sqrt(number)))); | |||||
| } | |||||
| } | |||||