45 lines
1.5 KiB
C++
45 lines
1.5 KiB
C++
/*
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* Copyright 2015-2016 Michele "King_DuckZ" Santullo
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef idE24EF7737A7F4882B2BF254F0A3EEC34
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#define idE24EF7737A7F4882B2BF254F0A3EEC34
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#include <utility>
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namespace vwr {
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namespace implem {
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template <typename TO, typename FROM, std::size_t... I>
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Vec<TO> vector_cast (const Vec<FROM>& parVec, Vec<TO>*, std::index_sequence<I...>) {
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static_assert(
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static_cast<int>(Vec<TO>::dimensions) == static_cast<int>(Vec<FROM>::dimensions),
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"Mismatching dimensions"
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);
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static_assert(sizeof...(I) == Vec<TO>::dimensions, "Mismatching index count");
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typedef typename Vec<TO>::scalar_type CastType;
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return Vec<TO>(static_cast<CastType>(parVec[I])...);
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}
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} //namespace implem
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template <typename TOVec, typename FROM>
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TOVec vector_cast (const Vec<FROM>& parVec) {
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TOVec* const to = nullptr;
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return implem::vector_cast(parVec, to, std::make_index_sequence<Vec<FROM>::dimensions>());
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}
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} //namespace vwr
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#endif
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