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52 lines
1.2 KiB
52 lines
1.2 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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#pragma once |
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#include <thrust/detail/cstdint.h> |
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// functions to handle memory alignment |
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namespace thrust |
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{ |
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namespace detail |
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{ |
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namespace util |
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{ |
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template <typename T> |
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T * align_up(T * ptr, detail::uintptr_t bytes) |
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{ |
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return (T *) ( bytes * (((detail::uintptr_t) ptr + (bytes - 1)) / bytes) ); |
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} |
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template <typename T> |
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T * align_down(T * ptr, detail::uintptr_t bytes) |
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{ |
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return (T *) ( bytes * (detail::uintptr_t(ptr) / bytes) ); |
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} |
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template <typename T> |
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bool is_aligned(T * ptr, detail::uintptr_t bytes = sizeof(T)) |
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{ |
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return detail::uintptr_t(ptr) % bytes == 0; |
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} |
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} // end namespace util |
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} // end namespace detail |
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} // end namespace thrust |
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