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annotate armadillo-2.4.4/include/armadillo_bits/fn_min.hpp @ 18:8d046a9d36aa slimline

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Back out rev 13:ac07c60aa798. Like an idiot, I committed a whole pile of unrelated changes in the guise of a single typo fix. Will re-commit in stages
author Chris Cannam
date Thu, 10 May 2012 10:45:44 +0100
parents 8b6102e2a9b0
children
rev   line source
max@0 1 // Copyright (C) 2008-2011 NICTA (www.nicta.com.au)
max@0 2 // Copyright (C) 2008-2011 Conrad Sanderson
max@0 3 //
max@0 4 // This file is part of the Armadillo C++ library.
max@0 5 // It is provided without any warranty of fitness
max@0 6 // for any purpose. You can redistribute this file
max@0 7 // and/or modify it under the terms of the GNU
max@0 8 // Lesser General Public License (LGPL) as published
max@0 9 // by the Free Software Foundation, either version 3
max@0 10 // of the License or (at your option) any later version.
max@0 11 // (see http://www.opensource.org/licenses for more info)
max@0 12
max@0 13
max@0 14 //! \addtogroup fn_min
max@0 15 //! @{
max@0 16
max@0 17 //! \brief
max@0 18 //! Delayed 'minimum values' operation.
max@0 19 //! The dimension, along which the minima are found, is set via 'dim'.
max@0 20 //! For dim = 0, the minimum value of each column is found (i.e. searches by traversing across rows).
max@0 21 //! For dim = 1, the minimum value of each row is found (i.e. searches by traversing across columns).
max@0 22 //! The default is dim = 0.
max@0 23
max@0 24 template<typename T1>
max@0 25 arma_inline
max@0 26 const Op<T1, op_min>
max@0 27 min(const Base<typename T1::elem_type,T1>& X, const uword dim = 0)
max@0 28 {
max@0 29 arma_extra_debug_sigprint();
max@0 30
max@0 31 return Op<T1, op_min>(X.get_ref(), dim, 0);
max@0 32 }
max@0 33
max@0 34
max@0 35 //! Immediate 'find the minimum value in a row vector' operation
max@0 36 template<typename eT>
max@0 37 inline
max@0 38 arma_warn_unused
max@0 39 eT
max@0 40 min(const Row<eT>& A)
max@0 41 {
max@0 42 arma_extra_debug_sigprint();
max@0 43
max@0 44 const uword A_n_elem = A.n_elem;
max@0 45
max@0 46 arma_debug_check( (A_n_elem == 0), "min(): given object has no elements" );
max@0 47
max@0 48 return op_min::direct_min(A.mem, A_n_elem);
max@0 49 }
max@0 50
max@0 51
max@0 52
max@0 53 //! Immediate 'find the minimum value in a column vector'
max@0 54 template<typename eT>
max@0 55 inline
max@0 56 arma_warn_unused
max@0 57 eT
max@0 58 min(const Col<eT>& A)
max@0 59 {
max@0 60 arma_extra_debug_sigprint();
max@0 61
max@0 62 const uword A_n_elem = A.n_elem;
max@0 63
max@0 64 arma_debug_check( (A_n_elem == 0), "min(): given object has no elements" );
max@0 65
max@0 66 return op_min::direct_min(A.mem, A_n_elem);
max@0 67 }
max@0 68
max@0 69
max@0 70
max@0 71 //! \brief
max@0 72 //! Immediate 'find minimum value' operation,
max@0 73 //! invoked, for example, by: min(min(A))
max@0 74 template<typename T1>
max@0 75 inline
max@0 76 arma_warn_unused
max@0 77 typename T1::elem_type
max@0 78 min(const Op<T1, op_min>& in)
max@0 79 {
max@0 80 arma_extra_debug_sigprint();
max@0 81 arma_extra_debug_print("min(): two consecutive min() calls detected");
max@0 82
max@0 83 typedef typename T1::elem_type eT;
max@0 84
max@0 85 const unwrap<T1> tmp1(in.m);
max@0 86 const Mat<eT>& X = tmp1.M;
max@0 87
max@0 88 const uword X_n_elem = X.n_elem;
max@0 89
max@0 90 arma_debug_check( (X_n_elem == 0), "min(): given object has no elements" );
max@0 91
max@0 92 return op_min::direct_min(X.mem, X_n_elem);
max@0 93 }
max@0 94
max@0 95
max@0 96
max@0 97 template<typename T1>
max@0 98 inline
max@0 99 const Op< Op<T1, op_min>, op_min>
max@0 100 min(const Op<T1, op_min>& in, const uword dim)
max@0 101 {
max@0 102 arma_extra_debug_sigprint();
max@0 103
max@0 104 return Op< Op<T1, op_min>, op_min>(in, dim, 0);
max@0 105 }
max@0 106
max@0 107
max@0 108
max@0 109 template<typename eT>
max@0 110 inline
max@0 111 arma_warn_unused
max@0 112 eT
max@0 113 min(const subview_row<eT>& A)
max@0 114 {
max@0 115 arma_extra_debug_sigprint();
max@0 116
max@0 117 arma_debug_check( (A.n_elem == 0), "min(): given object has no elements" );
max@0 118
max@0 119 return op_min::direct_min(A);
max@0 120 }
max@0 121
max@0 122
max@0 123
max@0 124 template<typename eT>
max@0 125 inline
max@0 126 arma_warn_unused
max@0 127 eT
max@0 128 min(const subview_col<eT>& A)
max@0 129 {
max@0 130 arma_extra_debug_sigprint();
max@0 131
max@0 132 arma_debug_check( (A.n_elem == 0), "min(): given object has no elements" );
max@0 133
max@0 134 return op_min::direct_min(A.colptr(0), A.n_rows);
max@0 135 }
max@0 136
max@0 137
max@0 138
max@0 139 template<typename eT>
max@0 140 inline
max@0 141 arma_warn_unused
max@0 142 eT
max@0 143 min(const diagview<eT>& A)
max@0 144 {
max@0 145 arma_extra_debug_sigprint();
max@0 146
max@0 147 arma_debug_check( (A.n_elem == 0), "min(): given object has no elements" );
max@0 148
max@0 149 return op_min::direct_min(A);
max@0 150 }
max@0 151
max@0 152
max@0 153
max@0 154 template<typename eT>
max@0 155 inline
max@0 156 arma_warn_unused
max@0 157 eT
max@0 158 min(const Op<subview<eT>, op_min>& in)
max@0 159 {
max@0 160 arma_extra_debug_sigprint();
max@0 161 arma_extra_debug_print("min(): two consecutive min() calls detected");
max@0 162
max@0 163 const subview<eT>& X = in.m;
max@0 164
max@0 165 arma_debug_check( (X.n_elem == 0), "min(): given object has no elements" );
max@0 166
max@0 167 return op_min::direct_min(X);
max@0 168 }
max@0 169
max@0 170
max@0 171
max@0 172 template<typename eT, typename T1>
max@0 173 inline
max@0 174 arma_warn_unused
max@0 175 eT
max@0 176 min(const subview_elem1<eT,T1>& A)
max@0 177 {
max@0 178 arma_extra_debug_sigprint();
max@0 179
max@0 180 const Mat<eT> X(A);
max@0 181
max@0 182 const uword X_n_elem = X.n_elem;
max@0 183
max@0 184 arma_debug_check( (X_n_elem == 0), "min(): given object has no elements" );
max@0 185
max@0 186 return op_min::direct_min(X.mem, X_n_elem);
max@0 187 }
max@0 188
max@0 189
max@0 190
max@0 191 //! @}