220 lines
4.1 KiB
C++
220 lines
4.1 KiB
C++
// Copyright (C) 2008-2015 National ICT Australia (NICTA)
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//
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// This Source Code Form is subject to the terms of the Mozilla Public
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// License, v. 2.0. If a copy of the MPL was not distributed with this
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// file, You can obtain one at http://mozilla.org/MPL/2.0/.
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// -------------------------------------------------------------------
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//
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// Written by Conrad Sanderson - http://conradsanderson.id.au
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//! \addtogroup fn_min
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//! @{
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//! \brief
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//! Delayed 'minimum values' operation.
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//! The dimension, along which the minima are found, is set via 'dim'.
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//! For dim = 0, the minimum value of each column is found (i.e. searches by traversing across rows).
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//! For dim = 1, the minimum value of each row is found (i.e. searches by traversing across columns).
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//! The default is dim = 0.
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template<typename T1>
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arma_inline
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const Op<T1, op_min>
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min
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(
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const T1& X,
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const uword dim = 0,
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const typename enable_if< is_arma_type<T1>::value == true >::result* junk1 = 0,
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const typename enable_if< resolves_to_vector<T1>::value == false >::result* junk2 = 0
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)
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{
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arma_extra_debug_sigprint();
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arma_ignore(junk1);
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arma_ignore(junk2);
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return Op<T1, op_min>(X, dim, 0);
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}
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template<typename T1>
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arma_inline
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const Op<T1, op_min>
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min
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(
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const T1& X,
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const uword dim,
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const typename enable_if<resolves_to_vector<T1>::value == true>::result* junk = 0
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)
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{
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arma_extra_debug_sigprint();
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arma_ignore(junk);
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return Op<T1, op_min>(X, dim, 0);
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}
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template<typename T1>
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inline
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arma_warn_unused
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typename T1::elem_type
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min
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(
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const T1& X,
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const arma_empty_class junk1 = arma_empty_class(),
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const typename enable_if<resolves_to_vector<T1>::value == true>::result* junk2 = 0
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)
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{
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arma_extra_debug_sigprint();
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arma_ignore(junk1);
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arma_ignore(junk2);
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return op_min::min(X);
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}
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//! \brief
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//! Immediate 'find minimum value' operation,
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//! invoked, for example, by: min(min(A))
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template<typename T1>
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inline
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arma_warn_unused
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typename T1::elem_type
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min(const Op<T1, op_min>& in)
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{
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arma_extra_debug_sigprint();
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arma_extra_debug_print("min(): two consecutive min() calls detected");
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return op_min::min(in.m);
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}
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template<typename T1>
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arma_inline
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const Op< Op<T1, op_min>, op_min>
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min(const Op<T1, op_min>& in, const uword dim)
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{
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arma_extra_debug_sigprint();
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return Op< Op<T1, op_min>, op_min>(in, dim, 0);
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}
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template<typename T>
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arma_inline
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arma_warn_unused
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const typename arma_scalar_only<T>::result &
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min(const T& x)
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{
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return x;
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}
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//! element-wise minimum
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template<typename T1, typename T2>
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arma_inline
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typename
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enable_if2
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<
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( is_arma_type<T1>::value && is_arma_type<T2>::value && is_same_type<typename T1::elem_type, typename T2::elem_type>::value ),
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const Glue<T1, T2, glue_min>
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>::result
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min
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(
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const T1& X,
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const T2& Y
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)
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{
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arma_extra_debug_sigprint();
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return Glue<T1, T2, glue_min>(X, Y);
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}
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template<typename T1>
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inline
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arma_warn_unused
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typename
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enable_if2
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<
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(is_arma_sparse_type<T1>::value == true) && (resolves_to_sparse_vector<T1>::value == true),
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typename T1::elem_type
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>::result
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min(const T1& x)
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{
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arma_extra_debug_sigprint();
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return spop_min::vector_min(x);
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}
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template<typename T1>
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inline
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typename
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enable_if2
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<
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(is_arma_sparse_type<T1>::value == true) && (resolves_to_sparse_vector<T1>::value == false),
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const SpOp<T1, spop_min>
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>::result
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min(const T1& X, const uword dim = 0)
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{
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arma_extra_debug_sigprint();
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return SpOp<T1, spop_min>(X, dim, 0);
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}
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template<typename T1>
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inline
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arma_warn_unused
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typename T1::elem_type
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min(const SpOp<T1, spop_min>& X)
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{
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arma_extra_debug_sigprint();
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arma_extra_debug_print("min(): two consecutive min() calls detected");
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return spop_min::vector_min(X.m);
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}
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template<typename T1>
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inline
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const SpOp< SpOp<T1, spop_min>, spop_min>
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min(const SpOp<T1, spop_min>& in, const uword dim)
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{
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arma_extra_debug_sigprint();
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return SpOp< SpOp<T1, spop_min>, spop_min>(in, dim, 0);
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}
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inline
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uword
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min(const SizeMat& s)
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{
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return (std::min)(s.n_rows, s.n_cols);
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}
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inline
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uword
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min(const SizeCube& s)
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{
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return (std::min)( (std::min)(s.n_rows, s.n_cols), s.n_slices );
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}
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//! @}
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