| 1 | //===-- Unittests for nan -------------------------------------------------===// |
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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 "src/__support/FPUtil/FPBits.h" |
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| 10 | #include "src/math/nan.h" |
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| 11 | #include "test/UnitTest/FEnvSafeTest.h" |
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| 12 | #include "test/UnitTest/FPMatcher.h" |
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| 13 | #include "test/UnitTest/Test.h" |
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| 14 | #include <signal.h> |
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| 15 | |
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| 16 | class LlvmLibcNanTest : public LIBC_NAMESPACE::testing::FEnvSafeTest { |
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| 17 | public: |
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| 18 | using StorageType = LIBC_NAMESPACE::fputil::FPBits<double>::StorageType; |
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| 19 | |
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| 20 | void run_test(const char *input_str, StorageType bits) { |
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| 21 | double result = LIBC_NAMESPACE::nan(arg: input_str); |
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| 22 | auto actual_fp = LIBC_NAMESPACE::fputil::FPBits<double>(result); |
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| 23 | auto expected_fp = LIBC_NAMESPACE::fputil::FPBits<double>(bits); |
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| 24 | EXPECT_EQ(actual_fp.uintval(), expected_fp.uintval()); |
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| 25 | }; |
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| 26 | }; |
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| 27 | |
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| 28 | TEST_F(LlvmLibcNanTest, NCharSeq) { |
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| 29 | run_test(input_str: "" , bits: 0x7ff8000000000000); |
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| 30 | run_test(input_str: "1234" , bits: 0x7ff80000000004d2); |
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| 31 | run_test(input_str: "0x1234" , bits: 0x7ff8000000001234); |
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| 32 | run_test(input_str: "1a" , bits: 0x7ff8000000000000); |
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| 33 | run_test(input_str: "1234567890qwertyuiopasdfghjklzxcvbnmQWERTYUIOPASDFGHJKLZXCVBNM_" , |
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| 34 | bits: 0x7ff8000000000000); |
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| 35 | run_test(input_str: "10000000000000000000000000000000000000000000000000" , |
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| 36 | bits: 0x7ff8000000000000); |
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| 37 | } |
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| 38 | |
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| 39 | TEST_F(LlvmLibcNanTest, RandomString) { |
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| 40 | run_test(input_str: " 1234" , bits: 0x7ff8000000000000); |
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| 41 | run_test(input_str: "-1234" , bits: 0x7ff8000000000000); |
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| 42 | run_test(input_str: "asd&f" , bits: 0x7ff8000000000000); |
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| 43 | run_test(input_str: "123 " , bits: 0x7ff8000000000000); |
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| 44 | } |
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| 45 | |
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| 46 | #ifndef LIBC_HAVE_ADDRESS_SANITIZER |
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| 47 | TEST_F(LlvmLibcNanTest, InvalidInput) { |
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| 48 | EXPECT_DEATH([] { LIBC_NAMESPACE::nan(nullptr); }, WITH_SIGNAL(SIGSEGV)); |
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| 49 | } |
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| 50 | #endif // LIBC_HAVE_ADDRESS_SANITIZER |
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| 51 | |
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