155 lines
4.4 KiB
C++
155 lines
4.4 KiB
C++
/*
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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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* Copyright 2011-2015 Danny Robson <danny@nerdcruft.net>
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*/
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#ifdef __UTIL_MATRIX_IPP
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#error
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#endif
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#define __UTIL_MATRIX_IPP
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///////////////////////////////////////////////////////////////////////////////
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template <size_t S, typename T>
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T*
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util::matrix<S,T>::operator[] (size_t idx)
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{
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return this->values[idx];
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}
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//-----------------------------------------------------------------------------
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template <size_t S, typename T>
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const T*
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util::matrix<S,T>::operator[] (size_t idx) const
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{
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return this->values[idx];
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}
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//-----------------------------------------------------------------------------
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template <size_t S, typename T>
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const T*
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util::matrix<S,T>::begin (void) const
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{
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return &(*this)[0][0];
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}
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//-----------------------------------------------------------------------------
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template <size_t S, typename T>
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const T*
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util::matrix<S,T>::end (void) const
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{
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return &(*this)[S][0];
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}
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//-----------------------------------------------------------------------------
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template <size_t S, typename T>
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const T*
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util::matrix<S,T>::cbegin (void) const
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{
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return begin ();
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}
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//-----------------------------------------------------------------------------
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template <size_t S, typename T>
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const T*
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util::matrix<S,T>::cend (void) const
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{
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return end ();
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}
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//-----------------------------------------------------------------------------
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template <size_t S, typename T>
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T*
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util::matrix<S,T>::begin (void)
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{
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return &(*this)[0][0];
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}
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//-----------------------------------------------------------------------------
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template <size_t S, typename T>
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T*
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util::matrix<S,T>::end (void)
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{
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return &(*this)[S][0];
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}
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///////////////////////////////////////////////////////////////////////////////
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template <size_t S, typename T>
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template <typename U>
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util::matrix<S,U>
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util::matrix<S,T>::cast (void) const
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{
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util::matrix<S,U> out;
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std::copy (cbegin (), cend (), std::begin (out));
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return out;
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}
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///////////////////////////////////////////////////////////////////////////////
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#define MATRIX_ELEMENT_OP(OP) \
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template <size_t S, typename T> \
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constexpr \
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util::matrix<S,T> \
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util::operator OP ( \
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const util::matrix<S,T> &a, \
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const util::matrix<S,T> &b) \
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{ \
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static_assert ( \
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a.rows == b.rows && a.cols == b.cols, \
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"matrix dimensions must match for elementwise operations" \
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); \
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\
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util::matrix<S,T> res {}; \
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\
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for (size_t i = 0; i < a.rows; ++i) \
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for (size_t j = 0; j < a.cols; ++j) \
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res[i][j] = a[i][j] OP b[i][j]; \
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\
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return res; \
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}
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MATRIX_ELEMENT_OP(-)
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MATRIX_ELEMENT_OP(+)
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///////////////////////////////////////////////////////////////////////////////
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template <size_t S, typename T>
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util::matrix<S,T>
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util::abs (const util::matrix<S,T> &src)
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{
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util::matrix<S,T> dst;
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std::transform (std::cbegin (src), std::cend (src), std::begin (dst), util::abs<T>);
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return dst;
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}
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///////////////////////////////////////////////////////////////////////////////
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template <size_t S, typename T>
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constexpr
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T
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util::sum (const util::matrix<S,T> &src)
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{
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return sum (std::cbegin (src), std::cend (src));
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}
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