| 1 | //===-- Unittests for difftime --------------------------------------------===// |
|---|---|
| 2 | // |
| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| 4 | // See https://llvm.org/LICENSE.txt for license information. |
| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| 6 | // |
| 7 | //===----------------------------------------------------------------------===// |
| 8 | |
| 9 | #include "src/__support/FPUtil/FPBits.h" |
| 10 | #include "src/time/difftime.h" |
| 11 | #include "src/time/time_utils.h" |
| 12 | #include "test/UnitTest/ErrnoSetterMatcher.h" |
| 13 | #include "test/UnitTest/Test.h" |
| 14 | |
| 15 | using LIBC_NAMESPACE::testing::ErrnoSetterMatcher::Succeeds; |
| 16 | using LIBC_NAMESPACE::time_utils::TimeConstants; |
| 17 | |
| 18 | TEST(LlvmLibcDifftime, SmokeTest) { |
| 19 | time_t t1_seconds = TimeConstants::SECONDS_PER_HOUR; |
| 20 | time_t t2_seconds = 0; |
| 21 | |
| 22 | LIBC_NAMESPACE::fputil::FPBits<long double> expected_fp = |
| 23 | LIBC_NAMESPACE::fputil::FPBits<long double>(); |
| 24 | expected_fp = LIBC_NAMESPACE::fputil::FPBits<long double>( |
| 25 | static_cast<long double>(t1_seconds)); |
| 26 | |
| 27 | double result = LIBC_NAMESPACE::difftime(end: t1_seconds, beginning: t2_seconds); |
| 28 | |
| 29 | LIBC_NAMESPACE::fputil::FPBits<long double> actual_fp = |
| 30 | LIBC_NAMESPACE::fputil::FPBits<long double>(); |
| 31 | actual_fp = LIBC_NAMESPACE::fputil::FPBits<long double>( |
| 32 | static_cast<long double>(result)); |
| 33 | |
| 34 | EXPECT_EQ(actual_fp.uintval(), expected_fp.uintval()); |
| 35 | EXPECT_EQ(actual_fp.is_neg(), expected_fp.is_neg()); |
| 36 | EXPECT_EQ(actual_fp.get_exponent(), expected_fp.get_exponent()); |
| 37 | EXPECT_EQ(actual_fp.get_mantissa(), expected_fp.get_mantissa()); |
| 38 | } |
| 39 |