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/* IBM_PROLOG_BEGIN_TAG */
/* This is an automatically generated prolog. */
/* */
/* $Source: src/usr/testcore/lib/enable_if.H $ */
/* */
/* OpenPOWER HostBoot Project */
/* */
/* Contributors Listed Below - COPYRIGHT 2016 */
/* [+] International Business Machines Corp. */
/* */
/* */
/* Licensed under the Apache License, Version 2.0 (the "License"); */
/* you may not use this file except in compliance with the License. */
/* You may obtain a copy of the License at */
/* */
/* http://www.apache.org/licenses/LICENSE-2.0 */
/* */
/* Unless required by applicable law or agreed to in writing, software */
/* distributed under the License is distributed on an "AS IS" BASIS, */
/* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or */
/* implied. See the License for the specific language governing */
/* permissions and limitations under the License. */
/* */
/* IBM_PROLOG_END_TAG */
#ifndef __LIB_ENABLE_IF_H
#define __LIB_ENABLE_IF_H
#include <cxxtest/TestSuite.H>
#include <type_traits>
// STLEnableIfTest1 overloads are enabled via the return type
template<class T>
typename std::enable_if<std::is_integral<T>::value, T>::type
STLEnableIfTest1(T t)
{
t += 2;
return t;
}
template<class T>
typename std::enable_if<!std::is_integral<T>::value, T>::type
STLEnableIfTest1(T t)
{
// if floating point
if ( std::is_same<float, typename std::remove_cv<T>::type>::value ||
std::is_same<double, typename std::remove_cv<T>::type>::value ||
std::is_same<long double, typename std::remove_cv<T>::type>::value )
{
t += 1.1;
}
return t;
}
class STLEnableIfTest : public CxxTest::TestSuite
{
public:
void testEnableIf()
{
using namespace std;
int i = 1;
if (STLEnableIfTest1(i) != 3)
{
TS_FAIL("enable_if: expected integral function call to return 3 but see %d",
STLEnableIfTest1(i));
}
else
{
TS_TRACE("enable_if: expected integral function called");
}
float f = 1.1;
if (STLEnableIfTest1(f) != 2.2)
{
TS_FAIL("enable_if: expected non-integral function call to return 2.2 but see %f",
STLEnableIfTest1(f));
}
}
};
#endif
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