1 //===-- Utility class to test sqrt[f|l] -------------------------*- 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 #include "test/UnitTest/FEnvSafeTest.h" 10 #include "test/UnitTest/FPMatcher.h" 11 #include "test/UnitTest/Test.h" 12 #include "utils/MPFRWrapper/MPFRUtils.h" 13 14 namespace mpfr = LIBC_NAMESPACE::testing::mpfr; 15 16 template <typename OutType, typename InType> 17 class SqrtTest : public LIBC_NAMESPACE::testing::FEnvSafeTest { 18 19 DECLARE_SPECIAL_CONSTANTS(InType) 20 21 static constexpr StorageType HIDDEN_BIT = 22 StorageType(1) << LIBC_NAMESPACE::fputil::FPBits<InType>::FRACTION_LEN; 23 24 public: 25 using SqrtFunc = OutType (*)(InType); 26 test_denormal_values(SqrtFunc func)27 void test_denormal_values(SqrtFunc func) { 28 for (StorageType mant = 1; mant < HIDDEN_BIT; mant <<= 1) { 29 FPBits denormal(zero); 30 denormal.set_mantissa(mant); 31 InType x = denormal.get_val(); 32 EXPECT_MPFR_MATCH_ALL_ROUNDING(mpfr::Operation::Sqrt, x, func(x), 0.5); 33 } 34 35 constexpr StorageType COUNT = 200'001; 36 constexpr StorageType STEP = HIDDEN_BIT / COUNT; 37 for (StorageType i = 0, v = 0; i <= COUNT; ++i, v += STEP) { 38 InType x = FPBits(i).get_val(); 39 EXPECT_MPFR_MATCH_ALL_ROUNDING(mpfr::Operation::Sqrt, x, func(x), 0.5); 40 } 41 } 42 43 void test_normal_range(SqrtFunc func) { 44 constexpr StorageType COUNT = 200'001; 45 constexpr StorageType STEP = STORAGE_MAX / COUNT; 46 for (StorageType i = 0, v = 0; i <= COUNT; ++i, v += STEP) { 47 FPBits x_bits(v); 48 InType x = x_bits.get_val(); 49 if (x_bits.is_nan() || (x < 0)) 50 continue; 51 EXPECT_MPFR_MATCH_ALL_ROUNDING(mpfr::Operation::Sqrt, x, func(x), 0.5); 52 } 53 } 54 }; 55 56 #define LIST_SQRT_TESTS(T, func) \ 57 using LlvmLibcSqrtTest = SqrtTest<T, T>; \ 58 TEST_F(LlvmLibcSqrtTest, DenormalValues) { test_denormal_values(&func); } \ 59 TEST_F(LlvmLibcSqrtTest, NormalRange) { test_normal_range(&func); } 60 61 #define LIST_NARROWING_SQRT_TESTS(OutType, InType, func) \ 62 using LlvmLibcSqrtTest = SqrtTest<OutType, InType>; \ 63 TEST_F(LlvmLibcSqrtTest, DenormalValues) { test_denormal_values(&func); } \ 64 TEST_F(LlvmLibcSqrtTest, NormalRange) { test_normal_range(&func); } 65