| 62 | } |
| 63 | |
| 64 | static void TestRoundTripFromNaN(std::span<const T> test_cases) { |
| 65 | for (size_t i = 0; i < test_cases.size(); ++i) { |
| 66 | ARROW_SCOPED_TRACE("i=", i); |
| 67 | const auto input = test_cases[i]; |
| 68 | |
| 69 | ASSERT_TRUE(std::isnan(input)); |
| 70 | const bool sign = std::signbit(input); |
| 71 | |
| 72 | const auto f16 = Float16(input); |
| 73 | EXPECT_TRUE(f16.is_nan()); |
| 74 | EXPECT_EQ(std::isinf(input), f16.is_infinity()); |
| 75 | EXPECT_EQ(std::isfinite(input), f16.is_finite()); |
| 76 | EXPECT_EQ(sign, f16.signbit()); |
| 77 | |
| 78 | const auto output = static_cast<T>(f16); |
| 79 | EXPECT_TRUE(std::isnan(output)); |
| 80 | EXPECT_EQ(sign, std::signbit(output)); |
| 81 | } |
| 82 | } |
| 83 | |
| 84 | void TestRoundTripFromInf() { |
| 85 | const T test_cases[] = {+Limits<T>::infinity(), -Limits<T>::infinity()}; |