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127 lines
2.7 KiB
127 lines
2.7 KiB
/* |
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* Copyright 2008-2012 NVIDIA Corporation |
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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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/*! \file extrema.h |
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* \brief Sequential implementations of extrema functions. |
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*/ |
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#pragma once |
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#include <thrust/detail/config.h> |
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#include <thrust/pair.h> |
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#include <thrust/detail/function.h> |
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namespace thrust |
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{ |
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namespace system |
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{ |
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namespace detail |
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{ |
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namespace internal |
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{ |
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namespace scalar |
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{ |
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template <typename ForwardIterator, |
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typename BinaryPredicate> |
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ForwardIterator min_element(ForwardIterator first, |
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ForwardIterator last, |
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BinaryPredicate comp) |
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{ |
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// wrap comp |
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thrust::detail::host_function< |
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BinaryPredicate, |
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bool |
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> wrapped_comp(comp); |
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ForwardIterator imin = first; |
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for (; first != last; first++) |
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{ |
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if (wrapped_comp(*first, *imin)) |
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{ |
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imin = first; |
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} |
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} |
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return imin; |
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} |
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template <typename ForwardIterator, |
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typename BinaryPredicate> |
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ForwardIterator max_element(ForwardIterator first, |
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ForwardIterator last, |
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BinaryPredicate comp) |
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{ |
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// wrap comp |
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thrust::detail::host_function< |
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BinaryPredicate, |
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bool |
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> wrapped_comp(comp); |
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ForwardIterator imax = first; |
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for (; first != last; first++) |
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{ |
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if (wrapped_comp(*imax, *first)) |
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{ |
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imax = first; |
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} |
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} |
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return imax; |
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} |
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template <typename ForwardIterator, |
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typename BinaryPredicate> |
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thrust::pair<ForwardIterator,ForwardIterator> minmax_element(ForwardIterator first, |
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ForwardIterator last, |
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BinaryPredicate comp) |
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{ |
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// wrap comp |
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thrust::detail::host_function< |
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BinaryPredicate, |
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bool |
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> wrapped_comp(comp); |
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ForwardIterator imin = first; |
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ForwardIterator imax = first; |
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for (; first != last; first++) |
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{ |
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if (wrapped_comp(*first, *imin)) |
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{ |
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imin = first; |
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} |
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if (wrapped_comp(*imax, *first)) |
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{ |
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imax = first; |
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} |
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} |
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return thrust::make_pair(imin, imax); |
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} |
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} // end namespace scalar |
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} // end namespace internal |
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} // end namespace detail |
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} // end namespace system |
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} // end namespace thrust |
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