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73 lines
2.1 KiB
73 lines
2.1 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 advance.h |
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* \brief Advance an iterator by a given distance. |
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*/ |
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#pragma once |
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#include <thrust/detail/config.h> |
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namespace thrust |
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{ |
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/*! \addtogroup iterators |
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* \{ |
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*/ |
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/*! \p advance(i, n) increments the iterator \p i by the distance \p n. |
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* If <tt>n > 0</tt> it is equivalent to executing <tt>++i</tt> \p n |
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* times, and if <tt>n < 0</tt> it is equivalent to executing <tt>--i</tt> |
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* \p n times. If <tt>n == 0</tt>, the call has no effect. |
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* |
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* \param i The iterator to be advanced. |
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* \param n The distance by which to advance the iterator. |
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* |
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* \tparam InputIterator is a model of <a href="http://www.sgi.com/tech/stl/InputIterator.html">Input Iterator</a>. |
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* \tparam Distance is an integral type that is convertible to \p InputIterator's distance type. |
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* |
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* \pre \p n shall be negative only for bidirectional and random access iterators. |
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* |
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* The following code snippet demonstrates how to use \p advance to increment |
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* an iterator a given number of times. |
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* |
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* \code |
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* #include <thrust/advance.h> |
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* #include <thrust/device_vector.h> |
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* ... |
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* thrust::device_vector<int> vec(13); |
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* thrust::device_vector<int>::iterator iter = vec.begin(); |
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* |
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* thrust::advance(iter, 7); |
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* |
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* // iter - vec.begin() == 7 |
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* \endcode |
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* |
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* \see http://www.sgi.com/tech/stl/advance.html |
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*/ |
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template <typename InputIterator, typename Distance> |
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void advance(InputIterator& i, Distance n); |
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/*! \} // end iterators |
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*/ |
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} // end thrust |
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#include <thrust/detail/advance.inl> |
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