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//===-- Unittests for atof ------------------------------------------------===//
//
// 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/stdlib/atof.h"
#include "utils/UnitTest/Test.h"
#include <errno.h>
#include <limits.h>
#include <stddef.h>
// This is just a simple test to make sure that this function works at all. It's
// functionally identical to strtod so the bulk of the testing is there.
TEST(LlvmLibcAToFTest, SimpleTest) {
__llvm_libc::fputil::FPBits<double> expectedFP =
__llvm_libc::fputil::FPBits<double>(uint64_t(0x405ec00000000000));
errno = 0;
double result = __llvm_libc::atof("123");
__llvm_libc::fputil::FPBits<double> actualFP =
__llvm_libc::fputil::FPBits<double>(result);
EXPECT_EQ(actualFP.bits, expectedFP.bits);
EXPECT_EQ(actualFP.getSign(), expectedFP.getSign());
EXPECT_EQ(actualFP.getExponent(), expectedFP.getExponent());
EXPECT_EQ(actualFP.getMantissa(), expectedFP.getMantissa());
EXPECT_EQ(errno, 0);
}
TEST(LlvmLibcAToFTest, FailedParsingTest) {
__llvm_libc::fputil::FPBits<double> expectedFP =
__llvm_libc::fputil::FPBits<double>(uint64_t(0));
errno = 0;
double result = __llvm_libc::atof("???");
__llvm_libc::fputil::FPBits<double> actualFP =
__llvm_libc::fputil::FPBits<double>(result);
EXPECT_EQ(actualFP.bits, expectedFP.bits);
EXPECT_EQ(actualFP.getSign(), expectedFP.getSign());
EXPECT_EQ(actualFP.getExponent(), expectedFP.getExponent());
EXPECT_EQ(actualFP.getMantissa(), expectedFP.getMantissa());
EXPECT_EQ(errno, 0);
}
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