coco
72 lines
2.1 KiB
C++
72 lines
2.1 KiB
C++
// Copyright (C) 2009 Davis E. King (davis@dlib.net)
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// License: Boost Software License See LICENSE.txt for the full license.
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#ifndef DLIB_MATRIx_CONJ_TRANS_FUNCTIONS
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#define DLIB_MATRIx_CONJ_TRANS_FUNCTIONS
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#include "matrix_utilities.h"
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#include "matrix_math_functions.h"
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#include "matrix.h"
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#include "../algs.h"
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#include <cmath>
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#include <complex>
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#include <limits>
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namespace dlib
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{
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/*!
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The point of the two functions defined in this file is to make statements
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of the form conj(trans(m)) and trans(conj(m)) look the same so that it is
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easier to map them to BLAS functions later on.
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!*/
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// ----------------------------------------------------------------------------------------
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template <typename M>
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struct op_conj_trans
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{
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op_conj_trans( const M& m_) : m(m_){}
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const M& m;
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const static long cost = M::cost+1;
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const static long NR = M::NC;
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const static long NC = M::NR;
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typedef typename M::type type;
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typedef typename M::type const_ret_type;
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typedef typename M::mem_manager_type mem_manager_type;
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typedef typename M::layout_type layout_type;
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const_ret_type apply (long r, long c) const { return std::conj(m(c,r)); }
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long nr () const { return m.nc(); }
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long nc () const { return m.nr(); }
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template <typename U> bool aliases ( const matrix_exp<U>& item) const { return m.aliases(item); }
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template <typename U> bool destructively_aliases ( const matrix_exp<U>& item) const { return m.aliases(item); }
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};
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template <typename EXP>
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const matrix_op<op_conj_trans<EXP> > trans (
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const matrix_op<op_conj<EXP> >& m
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)
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{
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typedef op_conj_trans<EXP> op;
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return matrix_op<op>(op(m.op.m));
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}
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template <typename EXP>
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const matrix_op<op_conj_trans<EXP> > conj (
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const matrix_op<op_trans<EXP> >& m
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)
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{
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typedef op_conj_trans<EXP> op;
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return matrix_op<op>(op(m.op.m));
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}
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// ----------------------------------------------------------------------------------------
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}
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#endif // DLIB_MATRIx_CONJ_TRANS_FUNCTIONS
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