1 //===-- Unittests for nanf ------------------------------------------------===//
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/signal_macros.h"
10 #include "src/__support/FPUtil/FPBits.h"
11 #include "src/__support/macros/sanitizer.h"
12 #include "src/math/nanf.h"
13 #include "test/UnitTest/FEnvSafeTest.h"
14 #include "test/UnitTest/FPMatcher.h"
15 #include "test/UnitTest/Test.h"
16
17 class LlvmLibcNanfTest : public LIBC_NAMESPACE::testing::FEnvSafeTest {
18 public:
19 using StorageType = LIBC_NAMESPACE::fputil::FPBits<float>::StorageType;
20
run_test(const char * input_str,StorageType bits)21 void run_test(const char *input_str, StorageType bits) {
22 float result = LIBC_NAMESPACE::nanf(input_str);
23 auto actual_fp = LIBC_NAMESPACE::fputil::FPBits<float>(result);
24 auto expected_fp = LIBC_NAMESPACE::fputil::FPBits<float>(bits);
25 EXPECT_EQ(actual_fp.uintval(), expected_fp.uintval());
26 }
27 };
28
TEST_F(LlvmLibcNanfTest,NCharSeq)29 TEST_F(LlvmLibcNanfTest, NCharSeq) {
30 run_test("", 0x7fc00000);
31 run_test("1234", 0x7fc004d2);
32 run_test("0x1234", 0x7fc01234);
33 run_test("1a", 0x7fc00000);
34 run_test("1234567890qwertyuiopasdfghjklzxcvbnmQWERTYUIOPASDFGHJKLZXCVBNM_",
35 0x7fc00000);
36 run_test("10000000000000000000000000000000000000000000000000", 0x7fc00000);
37 }
38
TEST_F(LlvmLibcNanfTest,RandomString)39 TEST_F(LlvmLibcNanfTest, RandomString) {
40 run_test(" 1234", 0x7fc00000);
41 run_test("-1234", 0x7fc00000);
42 run_test("asd&f", 0x7fc00000);
43 run_test("123 ", 0x7fc00000);
44 }
45
46 #if defined(LIBC_ADD_NULL_CHECKS) && !defined(LIBC_HAS_SANITIZER)
TEST_F(LlvmLibcNanfTest,InvalidInput)47 TEST_F(LlvmLibcNanfTest, InvalidInput) {
48 EXPECT_DEATH([] { LIBC_NAMESPACE::nanf(nullptr); });
49 }
50 #endif // LIBC_HAS_ADDRESS_SANITIZER
51