| 1 | //===-- Unittests for expm1f-----------------------------------------------===// |
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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/expm1f.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 LlvmLibcExpm1fTest = LIBC_NAMESPACE::testing::FPTest<float>; |
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| 19 | |
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| 20 | TEST_F(LlvmLibcExpm1fTest, SpecialNumbers) { |
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| 21 | libc_errno = 0; |
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| 22 | |
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| 23 | EXPECT_FP_EQ_WITH_EXCEPTION(aNaN, LIBC_NAMESPACE::expm1f(sNaN), FE_INVALID); |
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| 24 | EXPECT_MATH_ERRNO(0); |
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| 25 | |
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| 26 | EXPECT_FP_EQ_ALL_ROUNDING(aNaN, LIBC_NAMESPACE::expm1f(aNaN)); |
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| 27 | EXPECT_MATH_ERRNO(0); |
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| 28 | |
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| 29 | EXPECT_FP_EQ_ALL_ROUNDING(inf, LIBC_NAMESPACE::expm1f(inf)); |
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| 30 | EXPECT_MATH_ERRNO(0); |
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| 31 | |
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| 32 | EXPECT_FP_EQ_ALL_ROUNDING(-1.0f, LIBC_NAMESPACE::expm1f(neg_inf)); |
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| 33 | EXPECT_MATH_ERRNO(0); |
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| 34 | |
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| 35 | EXPECT_FP_EQ_ALL_ROUNDING(0.0f, LIBC_NAMESPACE::expm1f(0.0f)); |
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| 36 | EXPECT_MATH_ERRNO(0); |
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| 37 | |
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| 38 | EXPECT_FP_EQ_ALL_ROUNDING(-0.0f, LIBC_NAMESPACE::expm1f(-0.0f)); |
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| 39 | EXPECT_MATH_ERRNO(0); |
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| 40 | } |
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| 41 | |
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| 42 | TEST_F(LlvmLibcExpm1fTest, Overflow) { |
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| 43 | libc_errno = 0; |
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| 44 | EXPECT_FP_EQ_WITH_EXCEPTION( |
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| 45 | inf, LIBC_NAMESPACE::expm1f(FPBits(0x7f7fffffU).get_val()), FE_OVERFLOW); |
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| 46 | EXPECT_MATH_ERRNO(ERANGE); |
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| 47 | |
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| 48 | EXPECT_FP_EQ_WITH_EXCEPTION( |
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| 49 | inf, LIBC_NAMESPACE::expm1f(FPBits(0x42cffff8U).get_val()), FE_OVERFLOW); |
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| 50 | EXPECT_MATH_ERRNO(ERANGE); |
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| 51 | |
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| 52 | EXPECT_FP_EQ_WITH_EXCEPTION( |
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| 53 | inf, LIBC_NAMESPACE::expm1f(FPBits(0x42d00008U).get_val()), FE_OVERFLOW); |
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| 54 | EXPECT_MATH_ERRNO(ERANGE); |
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| 55 | } |
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| 56 | |
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| 57 | #ifdef LIBC_TEST_FTZ_DAZ |
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| 58 | |
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| 59 | using namespace LIBC_NAMESPACE::testing; |
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| 60 | |
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| 61 | TEST_F(LlvmLibcExpm1fTest, FTZMode) { |
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| 62 | ModifyMXCSR mxcsr(FTZ); |
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| 63 | |
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| 64 | EXPECT_FP_EQ(0.0f, LIBC_NAMESPACE::expm1f(min_denormal)); |
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| 65 | EXPECT_FP_EQ(0.0f, LIBC_NAMESPACE::expm1f(max_denormal)); |
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| 66 | } |
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| 67 | |
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| 68 | TEST_F(LlvmLibcExpm1fTest, DAZMode) { |
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| 69 | ModifyMXCSR mxcsr(DAZ); |
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| 70 | |
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| 71 | EXPECT_FP_EQ(0.0f, LIBC_NAMESPACE::expm1f(min_denormal)); |
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| 72 | EXPECT_FP_EQ(0.0f, LIBC_NAMESPACE::expm1f(max_denormal)); |
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| 73 | } |
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| 74 | |
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| 75 | TEST_F(LlvmLibcExpm1fTest, FTZDAZMode) { |
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| 76 | ModifyMXCSR mxcsr(FTZ | DAZ); |
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| 77 | |
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| 78 | EXPECT_FP_EQ(0.0f, LIBC_NAMESPACE::expm1f(min_denormal)); |
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| 79 | EXPECT_FP_EQ(0.0f, LIBC_NAMESPACE::expm1f(max_denormal)); |
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| 80 | } |
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| 81 | |
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| 82 | #endif |
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| 83 | |
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