1 //===-- Unittests for 10^x ------------------------------------------------===// 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/exp10.h" 13 #include "test/UnitTest/FPMatcher.h" 14 #include "test/UnitTest/Test.h" 15 16 #include <stdint.h> 17 18 using LlvmLibcExp10Test = LIBC_NAMESPACE::testing::FPTest<double>; 19 20 TEST_F(LlvmLibcExp10Test, SpecialNumbers) { 21 EXPECT_FP_EQ(aNaN, LIBC_NAMESPACE::exp10(aNaN)); 22 EXPECT_FP_EQ(inf, LIBC_NAMESPACE::exp10(inf)); 23 EXPECT_FP_EQ_ALL_ROUNDING(zero, LIBC_NAMESPACE::exp10(neg_inf)); 24 EXPECT_FP_EQ_WITH_EXCEPTION(zero, LIBC_NAMESPACE::exp10(-0x1.0p20), 25 FE_UNDERFLOW); 26 EXPECT_FP_EQ_WITH_EXCEPTION(inf, LIBC_NAMESPACE::exp10(0x1.0p20), 27 FE_OVERFLOW); 28 EXPECT_FP_EQ_ALL_ROUNDING(1.0, LIBC_NAMESPACE::exp10(0.0)); 29 EXPECT_FP_EQ_ALL_ROUNDING(1.0, LIBC_NAMESPACE::exp10(-0.0)); 30 31 EXPECT_FP_EQ_ALL_ROUNDING(10.0, LIBC_NAMESPACE::exp10(1.0)); 32 EXPECT_FP_EQ_ALL_ROUNDING(100.0, LIBC_NAMESPACE::exp10(2.0)); 33 EXPECT_FP_EQ_ALL_ROUNDING(1000.0, LIBC_NAMESPACE::exp10(3.0)); 34 } 35 36 #ifdef LIBC_TEST_FTZ_DAZ 37 38 using namespace LIBC_NAMESPACE::testing; 39 40 TEST_F(LlvmLibcExp10Test, FTZMode) { 41 ModifyMXCSR mxcsr(FTZ); 42 43 EXPECT_FP_EQ(1.0, LIBC_NAMESPACE::exp10(min_denormal)); 44 EXPECT_FP_EQ(1.0, LIBC_NAMESPACE::exp10(max_denormal)); 45 } 46 47 TEST_F(LlvmLibcExp10Test, DAZMode) { 48 ModifyMXCSR mxcsr(DAZ); 49 50 EXPECT_FP_EQ(1.0, LIBC_NAMESPACE::exp10(min_denormal)); 51 EXPECT_FP_EQ(1.0, LIBC_NAMESPACE::exp10(max_denormal)); 52 } 53 54 TEST_F(LlvmLibcExp10Test, FTZDAZMode) { 55 ModifyMXCSR mxcsr(FTZ | DAZ); 56 57 EXPECT_FP_EQ(1.0, LIBC_NAMESPACE::exp10(min_denormal)); 58 EXPECT_FP_EQ(1.0, LIBC_NAMESPACE::exp10(max_denormal)); 59 } 60 61 #endif 62