| 1 | //===-- Unittests for log10 -----------------------------------------------===// |
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| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | |
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| 9 | #include "hdr/math_macros.h" |
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| 10 | #include "src/__support/FPUtil/FPBits.h" |
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| 11 | #include "src/__support/libc_errno.h" |
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| 12 | #include "src/math/log10.h" |
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| 13 | #include "test/UnitTest/FPMatcher.h" |
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| 14 | #include "test/UnitTest/Test.h" |
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| 15 | |
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| 16 | #include <stdint.h> |
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| 17 | |
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| 18 | using LlvmLibcLog10Test = LIBC_NAMESPACE::testing::FPTest<double>; |
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| 19 | |
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| 20 | TEST_F(LlvmLibcLog10Test, SpecialNumbers) { |
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| 21 | EXPECT_FP_EQ_WITH_EXCEPTION(aNaN, LIBC_NAMESPACE::log10(sNaN), FE_INVALID); |
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| 22 | EXPECT_MATH_ERRNO(0); |
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| 23 | |
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| 24 | EXPECT_FP_EQ(aNaN, LIBC_NAMESPACE::log10(aNaN)); |
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| 25 | EXPECT_FP_EQ(inf, LIBC_NAMESPACE::log10(inf)); |
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| 26 | EXPECT_FP_IS_NAN_WITH_EXCEPTION(LIBC_NAMESPACE::log10(neg_inf), FE_INVALID); |
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| 27 | EXPECT_FP_EQ_WITH_EXCEPTION(neg_inf, LIBC_NAMESPACE::log10(0.0), |
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| 28 | FE_DIVBYZERO); |
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| 29 | EXPECT_FP_EQ_WITH_EXCEPTION(neg_inf, LIBC_NAMESPACE::log10(-0.0), |
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| 30 | FE_DIVBYZERO); |
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| 31 | EXPECT_FP_IS_NAN_WITH_EXCEPTION(LIBC_NAMESPACE::log10(-1.0), FE_INVALID); |
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| 32 | EXPECT_FP_EQ_ALL_ROUNDING(zero, LIBC_NAMESPACE::log10(1.0)); |
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| 33 | |
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| 34 | double x = 1.0; |
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| 35 | for (int i = 0; i < 11; ++i, x *= 10.0) { |
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| 36 | EXPECT_FP_EQ_ALL_ROUNDING(static_cast<double>(i), LIBC_NAMESPACE::log10(x)); |
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| 37 | } |
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| 38 | } |
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| 39 | |
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| 40 | #ifdef LIBC_TEST_FTZ_DAZ |
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| 41 | |
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| 42 | using namespace LIBC_NAMESPACE::testing; |
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| 43 | |
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| 44 | TEST_F(LlvmLibcLog10Test, FTZMode) { |
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| 45 | ModifyMXCSR mxcsr(FTZ); |
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| 46 | |
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| 47 | EXPECT_FP_EQ(-0x1.434e6420f4374p8, LIBC_NAMESPACE::log10(min_denormal)); |
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| 48 | } |
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| 49 | |
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| 50 | TEST_F(LlvmLibcLog10Test, DAZMode) { |
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| 51 | ModifyMXCSR mxcsr(DAZ); |
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| 52 | |
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| 53 | EXPECT_FP_EQ(FPBits::inf(Sign::NEG).get_val(), |
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| 54 | LIBC_NAMESPACE::log10(min_denormal)); |
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| 55 | } |
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| 56 | |
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| 57 | TEST_F(LlvmLibcLog10Test, FTZDAZMode) { |
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| 58 | ModifyMXCSR mxcsr(FTZ | DAZ); |
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| 59 | |
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| 60 | EXPECT_FP_EQ(FPBits::inf(Sign::NEG).get_val(), |
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| 61 | LIBC_NAMESPACE::log10(min_denormal)); |
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| 62 | } |
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| 63 | |
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| 64 | #endif |
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| 65 | |
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