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//===-- Unittests for nan -------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "src/__support/FPUtil/FPBits.h"
#include "src/math/nan.h"
#include "test/UnitTest/FPMatcher.h"
#include "test/UnitTest/Test.h"
#include <signal.h>
class LlvmLibcNanTest : public LIBC_NAMESPACE::testing::Test {
public:
using StorageType = LIBC_NAMESPACE::fputil::FPBits<double>::StorageType;
void run_test(const char *input_str, StorageType bits) {
double result = LIBC_NAMESPACE::nan(input_str);
auto actual_fp = LIBC_NAMESPACE::fputil::FPBits<double>(result);
auto expected_fp = LIBC_NAMESPACE::fputil::FPBits<double>(bits);
EXPECT_EQ(actual_fp.bits, expected_fp.bits);
};
};
TEST_F(LlvmLibcNanTest, NCharSeq) {
run_test("", 0x7ff8000000000000);
run_test("1234", 0x7ff80000000004d2);
run_test("0x1234", 0x7ff8000000001234);
run_test("1a", 0x7ff8000000000000);
run_test("1234567890qwertyuiopasdfghjklzxcvbnmQWERTYUIOPASDFGHJKLZXCVBNM_",
0x7ff8000000000000);
run_test("10000000000000000000000000000000000000000000000000",
0x7ff8000000000000);
}
TEST_F(LlvmLibcNanTest, RandomString) {
run_test(" 1234", 0x7ff8000000000000);
run_test("-1234", 0x7ff8000000000000);
run_test("asd&f", 0x7ff8000000000000);
run_test("123 ", 0x7ff8000000000000);
}
TEST_F(LlvmLibcNanTest, InvalidInput) {
EXPECT_DEATH([] { LIBC_NAMESPACE::nan(nullptr); }, WITH_SIGNAL(SIGSEGV));
}
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