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Diffstat (limited to 'src/usr/testcore/lib/enable_if.H')
-rw-r--r-- | src/usr/testcore/lib/enable_if.H | 83 |
1 files changed, 83 insertions, 0 deletions
diff --git a/src/usr/testcore/lib/enable_if.H b/src/usr/testcore/lib/enable_if.H new file mode 100644 index 000000000..feb209e3e --- /dev/null +++ b/src/usr/testcore/lib/enable_if.H @@ -0,0 +1,83 @@ +/* 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 |