1 //===-- Utility class to test different flavors of rint ---------*- C++ -*-===// 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 #ifndef LLVM_LIBC_TEST_SRC_MATH_SMOKE_RINTTEST_H 10 #define LLVM_LIBC_TEST_SRC_MATH_SMOKE_RINTTEST_H 11 12 #include "src/__support/FPUtil/FEnvImpl.h" 13 #include "src/__support/FPUtil/FPBits.h" 14 #include "test/UnitTest/FEnvSafeTest.h" 15 #include "test/UnitTest/FPMatcher.h" 16 #include "test/UnitTest/Test.h" 17 18 #include "hdr/fenv_macros.h" 19 #include "hdr/math_macros.h" 20 21 using LIBC_NAMESPACE::Sign; 22 23 static constexpr int ROUNDING_MODES[4] = {FE_UPWARD, FE_DOWNWARD, FE_TOWARDZERO, 24 FE_TONEAREST}; 25 26 template <typename T> 27 class RIntTestTemplate : public LIBC_NAMESPACE::testing::FEnvSafeTest { 28 public: 29 typedef T (*RIntFunc)(T); 30 31 private: 32 using FPBits = LIBC_NAMESPACE::fputil::FPBits<T>; 33 using StorageType = typename FPBits::StorageType; 34 35 const T inf = FPBits::inf(Sign::POS).get_val(); 36 const T neg_inf = FPBits::inf(Sign::NEG).get_val(); 37 const T zero = FPBits::zero(Sign::POS).get_val(); 38 const T neg_zero = FPBits::zero(Sign::NEG).get_val(); 39 const T nan = FPBits::quiet_nan().get_val(); 40 41 public: testSpecialNumbers(RIntFunc func)42 void testSpecialNumbers(RIntFunc func) { 43 for (int mode : ROUNDING_MODES) { 44 LIBC_NAMESPACE::fputil::set_round(mode); 45 ASSERT_FP_EQ(inf, func(inf)); 46 ASSERT_FP_EQ(neg_inf, func(neg_inf)); 47 ASSERT_FP_EQ(nan, func(nan)); 48 ASSERT_FP_EQ(zero, func(zero)); 49 ASSERT_FP_EQ(neg_zero, func(neg_zero)); 50 } 51 } 52 }; 53 54 #define LIST_RINT_TESTS(F, func) \ 55 using LlvmLibcRIntTest = RIntTestTemplate<F>; \ 56 TEST_F(LlvmLibcRIntTest, specialNumbers) { testSpecialNumbers(&func); } 57 58 #endif // LLVM_LIBC_TEST_SRC_MATH_SMOKE_RINTTEST_H 59