1 //===-- Unittests for nanf128 ---------------------------------------------===//
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 "src/__support/FPUtil/FPBits.h"
10 #include "src/__support/uint128.h"
11 #include "src/math/nanf128.h"
12 #include "test/UnitTest/FEnvSafeTest.h"
13 #include "test/UnitTest/FPMatcher.h"
14 #include "test/UnitTest/Test.h"
15
16 class LlvmLibcNanf128Test : public LIBC_NAMESPACE::testing::FEnvSafeTest {
17 public:
18 using FPBits128 = LIBC_NAMESPACE::fputil::FPBits<float128>;
19 using StorageType = FPBits128::StorageType;
20
21 const UInt128 QUIET_NAN = FPBits128::quiet_nan().uintval();
22 const UInt128 ONE = UInt128(1);
23
run_test(const char * input_str,StorageType bits)24 void run_test(const char *input_str, StorageType bits) {
25 float128 result = LIBC_NAMESPACE::nanf128(input_str);
26 auto actual_fp = FPBits128(result);
27 auto expected_fp = FPBits128(bits);
28 EXPECT_EQ(actual_fp.uintval(), expected_fp.uintval());
29 };
30 };
31
TEST_F(LlvmLibcNanf128Test,NCharSeq)32 TEST_F(LlvmLibcNanf128Test, NCharSeq) {
33 run_test("", QUIET_NAN);
34 run_test("1234", QUIET_NAN | 1234);
35 run_test("0x1234", QUIET_NAN | 0x1234);
36 run_test("2417851639229258349412352", QUIET_NAN | (ONE << 81));
37 run_test("0x200000000000000000000", QUIET_NAN | (ONE << 81));
38 run_test("10384593717069655257060992658440191",
39 QUIET_NAN | FPBits128::SIG_MASK);
40 run_test("0x1ffffffffffffffffffffffffffff", QUIET_NAN | FPBits128::SIG_MASK);
41 run_test("10384593717069655257060992658440192", QUIET_NAN);
42 run_test("0x20000000000000000000000000000", QUIET_NAN);
43 run_test("1a", QUIET_NAN);
44 run_test("10000000000000000000000000000000000000000000000000", QUIET_NAN);
45 }
46
TEST_F(LlvmLibcNanf128Test,RandomString)47 TEST_F(LlvmLibcNanf128Test, RandomString) {
48 run_test(" 1234", QUIET_NAN);
49 run_test("-1234", QUIET_NAN);
50 run_test("asd&f", QUIET_NAN);
51 run_test("123 ", QUIET_NAN);
52 run_test("1234567890qwertyuiopasdfghjklzxcvbnmQWERTYUIOPASDFGHJKLZXCVBNM_",
53 QUIET_NAN);
54 }
55
56 #ifndef LIBC_HAVE_ADDRESS_SANITIZER
57 #include <signal.h>
TEST_F(LlvmLibcNanf128Test,InvalidInput)58 TEST_F(LlvmLibcNanf128Test, InvalidInput) {
59 EXPECT_DEATH([] { LIBC_NAMESPACE::nanf128(nullptr); }, WITH_SIGNAL(SIGSEGV));
60 }
61 #endif // LIBC_HAVE_ADDRESS_SANITIZER
62