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 #include <stdio.h> 21 22 static constexpr int ROUNDING_MODES[4] = {FE_UPWARD, FE_DOWNWARD, FE_TOWARDZERO, 23 FE_TONEAREST}; 24 25 template <typename T> 26 class RIntTestTemplate : public LIBC_NAMESPACE::testing::FEnvSafeTest { 27 public: 28 typedef T (*RIntFunc)(T); 29 30 private: 31 using FPBits = LIBC_NAMESPACE::fputil::FPBits<T>; 32 using StorageType = typename FPBits::StorageType; 33 34 const T inf = FPBits::inf(Sign::POS).get_val(); 35 const T neg_inf = FPBits::inf(Sign::NEG).get_val(); 36 const T zero = FPBits::zero(Sign::POS).get_val(); 37 const T neg_zero = FPBits::zero(Sign::NEG).get_val(); 38 const T nan = FPBits::quiet_nan().get_val(); 39 40 public: testSpecialNumbers(RIntFunc func)41 void testSpecialNumbers(RIntFunc func) { 42 for (int mode : ROUNDING_MODES) { 43 LIBC_NAMESPACE::fputil::set_round(mode); 44 ASSERT_FP_EQ(inf, func(inf)); 45 ASSERT_FP_EQ(neg_inf, func(neg_inf)); 46 ASSERT_FP_EQ(nan, func(nan)); 47 ASSERT_FP_EQ(zero, func(zero)); 48 ASSERT_FP_EQ(neg_zero, func(neg_zero)); 49 } 50 } 51 }; 52 53 #define LIST_RINT_TESTS(F, func) \ 54 using LlvmLibcRIntTest = RIntTestTemplate<F>; \ 55 TEST_F(LlvmLibcRIntTest, specialNumbers) { testSpecialNumbers(&func); } 56 57 #endif // LLVM_LIBC_TEST_SRC_MATH_SMOKE_RINTTEST_H 58