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 TEST(LlvmLibcDifftime,SmokeTest)18TEST(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(t1_seconds, 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