1 //===-- Unittests for acoshf ----------------------------------------------===// 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 "hdr/math_macros.h" 10 #include "src/__support/FPUtil/FPBits.h" 11 #include "src/errno/libc_errno.h" 12 #include "src/math/acoshf.h" 13 #include "test/UnitTest/FPMatcher.h" 14 #include "test/UnitTest/Test.h" 15 #include "utils/MPFRWrapper/MPFRUtils.h" 16 17 #include <stdint.h> 18 19 using LlvmLibcAcoshfTest = LIBC_NAMESPACE::testing::FPTest<float>; 20 21 namespace mpfr = LIBC_NAMESPACE::testing::mpfr; 22 23 TEST_F(LlvmLibcAcoshfTest, SpecialNumbers) { 24 LIBC_NAMESPACE::libc_errno = 0; 25 26 EXPECT_FP_EQ_ALL_ROUNDING(aNaN, LIBC_NAMESPACE::acoshf(aNaN)); 27 EXPECT_MATH_ERRNO(0); 28 29 EXPECT_FP_EQ_ALL_ROUNDING(aNaN, LIBC_NAMESPACE::acoshf(0.0f)); 30 EXPECT_MATH_ERRNO(EDOM); 31 32 EXPECT_FP_EQ_ALL_ROUNDING(0.0f, LIBC_NAMESPACE::acoshf(1.0f)); 33 EXPECT_MATH_ERRNO(0); 34 35 EXPECT_FP_EQ_ALL_ROUNDING(inf, LIBC_NAMESPACE::acoshf(inf)); 36 EXPECT_MATH_ERRNO(0); 37 38 EXPECT_FP_EQ_ALL_ROUNDING(aNaN, LIBC_NAMESPACE::acoshf(neg_inf)); 39 EXPECT_MATH_ERRNO(EDOM); 40 } 41 42 TEST_F(LlvmLibcAcoshfTest, InFloatRange) { 43 constexpr uint32_t COUNT = 100'000; 44 constexpr uint32_t STEP = UINT32_MAX / COUNT; 45 for (uint32_t i = 0, v = 0; i <= COUNT; ++i, v += STEP) { 46 float x = FPBits(v).get_val(); 47 if (FPBits(v).is_nan() || FPBits(v).is_inf()) 48 continue; 49 ASSERT_MPFR_MATCH_ALL_ROUNDING(mpfr::Operation::Acosh, x, 50 LIBC_NAMESPACE::acoshf(x), 0.5); 51 } 52 } 53 54 TEST_F(LlvmLibcAcoshfTest, SpecificBitPatterns) { 55 constexpr int N = 12; 56 constexpr uint32_t INPUTS[N] = { 57 0x3f800000, // x = 1.0f 58 0x45abaf26, // x = 0x1.575e4cp12f 59 0x49d29048, // x = 0x1.a5209p20f 60 0x4bdd65a5, // x = 0x1.bacb4ap24f 61 0x4c803f2c, // x = 0x1.007e58p26f 62 0x4f8ffb03, // x = 0x1.1ff606p32f 63 0x5c569e88, // x = 0x1.ad3d1p57f 64 0x5e68984e, // x = 0x1.d1309cp61f 65 0x655890d3, // x = 0x1.b121a6p75f 66 0x65de7ca6, // x = 0x1.bcf94cp76f 67 0x6eb1a8ec, // x = 0x1.6351d8p94f 68 0x7997f30a, // x = 0x1.2fe614p116f 69 }; 70 71 for (int i = 0; i < N; ++i) { 72 float x = FPBits(INPUTS[i]).get_val(); 73 EXPECT_MPFR_MATCH_ALL_ROUNDING(mpfr::Operation::Acosh, x, 74 LIBC_NAMESPACE::acoshf(x), 0.5); 75 } 76 } 77