51 lines · cpp
1//===-- Unittests for nan -------------------------------------------------===//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-exception6//7//===----------------------------------------------------------------------===//8 9#include "hdr/signal_macros.h"10#include "src/__support/FPUtil/FPBits.h"11#include "src/math/nan.h"12#include "test/UnitTest/FEnvSafeTest.h"13#include "test/UnitTest/FPMatcher.h"14#include "test/UnitTest/Test.h"15 16class LlvmLibcNanTest : public LIBC_NAMESPACE::testing::FEnvSafeTest {17public:18 using StorageType = LIBC_NAMESPACE::fputil::FPBits<double>::StorageType;19 20 void run_test(const char *input_str, StorageType bits) {21 double result = LIBC_NAMESPACE::nan(input_str);22 auto actual_fp = LIBC_NAMESPACE::fputil::FPBits<double>(result);23 auto expected_fp = LIBC_NAMESPACE::fputil::FPBits<double>(bits);24 EXPECT_EQ(actual_fp.uintval(), expected_fp.uintval());25 }26};27 28TEST_F(LlvmLibcNanTest, NCharSeq) {29 run_test("", 0x7ff8000000000000);30 run_test("1234", 0x7ff80000000004d2);31 run_test("0x1234", 0x7ff8000000001234);32 run_test("1a", 0x7ff8000000000000);33 run_test("1234567890qwertyuiopasdfghjklzxcvbnmQWERTYUIOPASDFGHJKLZXCVBNM_",34 0x7ff8000000000000);35 run_test("10000000000000000000000000000000000000000000000000",36 0x7ff8000000000000);37}38 39TEST_F(LlvmLibcNanTest, RandomString) {40 run_test(" 1234", 0x7ff8000000000000);41 run_test("-1234", 0x7ff8000000000000);42 run_test("asd&f", 0x7ff8000000000000);43 run_test("123 ", 0x7ff8000000000000);44}45 46#if defined(LIBC_ADD_NULL_CHECKS)47TEST_F(LlvmLibcNanTest, InvalidInput) {48 EXPECT_DEATH([] { LIBC_NAMESPACE::nan(nullptr); }, WITH_SIGNAL(-1));49}50#endif // LIBC_ADD_NULL_CHECKS51