1//===-- Unittests for atof ------------------------------------------------===//
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/stdlib/atof.h"
11
12#include "test/UnitTest/ErrnoCheckingTest.h"
13#include "test/UnitTest/ErrnoSetterMatcher.h"
14#include "test/UnitTest/Test.h"
15
16#include <stddef.h>
17
18using LlvmLibcAToFTest = LIBC_NAMESPACE::testing::ErrnoCheckingTest;
19using LIBC_NAMESPACE::testing::ErrnoSetterMatcher::Succeeds;
20
21// This is just a simple test to make sure that this function works at all. It's
22// functionally identical to strtod so the bulk of the testing is there.
23TEST_F(LlvmLibcAToFTest, SimpleTest) {
24 LIBC_NAMESPACE::fputil::FPBits<double> expected_fp =
25 LIBC_NAMESPACE::fputil::FPBits<double>(uint64_t(0x405ec00000000000));
26
27 EXPECT_THAT(LIBC_NAMESPACE::atof("123"),
28 Succeeds<double>(expected_fp.get_val()));
29}
30
31TEST_F(LlvmLibcAToFTest, FailedParsingTest) {
32 // atof does not flag errors.
33 EXPECT_THAT(LIBC_NAMESPACE::atof("???"), Succeeds<double>(0.0));
34}
35

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source code of libc/test/src/stdlib/atof_test.cpp