Vc/traits/entry_type_of.h

0001 /*  This file is part of the Vc library. {{{
0002 Copyright © 2014 Matthias Kretz <kretz@kde.org>
0003
0004 Redistribution and use in source and binary forms, with or without
0005 modification, are permitted provided that the following conditions are met:
0006     * Redistributions of source code must retain the above copyright
0007       notice, this list of conditions and the following disclaimer.
0008     * Redistributions in binary form must reproduce the above copyright
0009       notice, this list of conditions and the following disclaimer in the
0010       documentation and/or other materials provided with the distribution.
0011     * Neither the names of contributing organizations nor the
0012       names of its contributors may be used to endorse or promote products
0013       derived from this software without specific prior written permission.
0014
0015 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
0016 ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
0017 WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
0018 DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE FOR ANY
0019 DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
0020 (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
0021 LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
0022 ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
0023 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
0024 SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
0025
0026 }}}*/
0027
0028 #ifndef VC_TRAITS_ENTRY_TYPE_OF_H_
0029 #define VC_TRAITS_ENTRY_TYPE_OF_H_
0030
0031 namespace Vc_VERSIONED_NAMESPACE
0032 {
0033 namespace Traits
0034 {
0035 namespace entry_type_of_internal
0036 {
0037 template <typename T, bool = Traits::is_simd_vector<T>::value> struct entry_type;
0038
0039 template <typename T> struct entry_type<T, true>
0040 {
0041     using type = typename decay<T>::EntryType;
0042 };
0043
0044 template <typename T> struct entry_type<T, false>
0045 {
0046     using type = typename std::remove_cv<typename std::remove_reference<T>::type>::type;
0047 };
0048 }  // namespace entry_type_of_internal
0049
0050 /**
0051  * Resolves to T::EntryType if \p T is a SIMD type, otherwise it resolves to \p T itself.
0052  */
0053 template <typename T> using entry_type_of = typename entry_type_of_internal::entry_type<T>::type;
0054
0055 }  // namespace Traits
0056 }  // namespace Vc_VERSIONED_NAMESPACE
0057
0058 #endif  // VC_TRAITS_ENTRY_TYPE_OF_H_
0059
0060 // vim: foldmethod=marker