1 //===-- Unittests for log10f ----------------------------------------------===// 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/math/log10f.h" 12 #include "test/UnitTest/FPMatcher.h" 13 #include "test/UnitTest/Test.h" 14 15 #include <stdint.h> 16 17 using LlvmLibcLog10fTest = LIBC_NAMESPACE::testing::FPTest<float>; 18 19 TEST_F(LlvmLibcLog10fTest, SpecialNumbers) { 20 EXPECT_FP_EQ(aNaN, LIBC_NAMESPACE::log10f(aNaN)); 21 EXPECT_FP_EQ(inf, LIBC_NAMESPACE::log10f(inf)); 22 EXPECT_FP_IS_NAN_WITH_EXCEPTION(LIBC_NAMESPACE::log10f(neg_inf), FE_INVALID); 23 EXPECT_FP_EQ_WITH_EXCEPTION(neg_inf, LIBC_NAMESPACE::log10f(0.0f), 24 FE_DIVBYZERO); 25 EXPECT_FP_EQ_WITH_EXCEPTION(neg_inf, LIBC_NAMESPACE::log10f(-0.0f), 26 FE_DIVBYZERO); 27 EXPECT_FP_IS_NAN_WITH_EXCEPTION(LIBC_NAMESPACE::log10f(-1.0f), FE_INVALID); 28 EXPECT_FP_EQ_ALL_ROUNDING(zero, LIBC_NAMESPACE::log10f(1.0f)); 29 30 float x = 1.0f; 31 for (int i = 0; i < 11; ++i, x *= 10.0f) { 32 EXPECT_FP_EQ_ALL_ROUNDING(static_cast<float>(i), LIBC_NAMESPACE::log10f(x)); 33 } 34 } 35 36 #ifdef LIBC_TEST_FTZ_DAZ 37 38 using namespace LIBC_NAMESPACE::testing; 39 40 TEST_F(LlvmLibcLog10fTest, FTZMode) { 41 ModifyMXCSR mxcsr(FTZ); 42 43 EXPECT_FP_EQ(-0x1.66d3e7bd9a403p5f, LIBC_NAMESPACE::log10f(min_denormal)); 44 } 45 46 TEST_F(LlvmLibcLog10fTest, DAZMode) { 47 ModifyMXCSR mxcsr(DAZ); 48 49 EXPECT_FP_EQ(FPBits::inf(Sign::NEG).get_val(), 50 LIBC_NAMESPACE::log10f(min_denormal)); 51 } 52 53 TEST_F(LlvmLibcLog10fTest, FTZDAZMode) { 54 ModifyMXCSR mxcsr(FTZ | DAZ); 55 56 EXPECT_FP_EQ(FPBits::inf(Sign::NEG).get_val(), 57 LIBC_NAMESPACE::log10f(min_denormal)); 58 } 59 60 #endif 61