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annotate armadillo-2.4.4/include/armadillo_bits/operator_minus.hpp @ 0:8b6102e2a9b0

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Armadillo Library
author maxzanoni76 <max.zanoni@eecs.qmul.ac.uk>
date Wed, 11 Apr 2012 09:27:06 +0100
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rev   line source
max@0 1 // Copyright (C) 2008-2010 NICTA (www.nicta.com.au)
max@0 2 // Copyright (C) 2008-2010 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 operator_minus
max@0 15 //! @{
max@0 16
max@0 17
max@0 18
max@0 19 //! unary -
max@0 20 template<typename T1>
max@0 21 arma_inline
max@0 22 const eOp<T1, eop_neg>
max@0 23 operator-
max@0 24 (const Base<typename T1::elem_type,T1>& X)
max@0 25 {
max@0 26 arma_extra_debug_sigprint();
max@0 27
max@0 28 return eOp<T1,eop_neg>(X.get_ref());
max@0 29 }
max@0 30
max@0 31
max@0 32
max@0 33 //! cancellation of two consecutive negations: -(-T1)
max@0 34 template<typename T1>
max@0 35 arma_inline
max@0 36 const T1&
max@0 37 operator-
max@0 38 (const eOp<T1, eop_neg>& X)
max@0 39 {
max@0 40 arma_extra_debug_sigprint();
max@0 41
max@0 42 return X.m;
max@0 43 }
max@0 44
max@0 45
max@0 46
max@0 47 //! Base - scalar
max@0 48 template<typename T1>
max@0 49 arma_inline
max@0 50 const eOp<T1, eop_scalar_minus_post>
max@0 51 operator-
max@0 52 (
max@0 53 const Base<typename T1::elem_type,T1>& X,
max@0 54 const typename T1::elem_type k
max@0 55 )
max@0 56 {
max@0 57 arma_extra_debug_sigprint();
max@0 58
max@0 59 return eOp<T1, eop_scalar_minus_post>(X.get_ref(), k);
max@0 60 }
max@0 61
max@0 62
max@0 63
max@0 64 //! scalar - Base
max@0 65 template<typename T1>
max@0 66 arma_inline
max@0 67 const eOp<T1, eop_scalar_minus_pre>
max@0 68 operator-
max@0 69 (
max@0 70 const typename T1::elem_type k,
max@0 71 const Base<typename T1::elem_type,T1>& X
max@0 72 )
max@0 73 {
max@0 74 arma_extra_debug_sigprint();
max@0 75
max@0 76 return eOp<T1, eop_scalar_minus_pre>(X.get_ref(), k);
max@0 77 }
max@0 78
max@0 79
max@0 80
max@0 81 //! complex scalar - non-complex Base (experimental)
max@0 82 template<typename T1>
max@0 83 arma_inline
max@0 84 const mtOp<typename std::complex<typename T1::pod_type>, T1, op_cx_scalar_minus_pre>
max@0 85 operator-
max@0 86 (
max@0 87 const std::complex<typename T1::pod_type>& k,
max@0 88 const Base<typename T1::pod_type, T1>& X
max@0 89 )
max@0 90 {
max@0 91 arma_extra_debug_sigprint();
max@0 92
max@0 93 return mtOp<typename std::complex<typename T1::pod_type>, T1, op_cx_scalar_minus_pre>('j', X.get_ref(), k);
max@0 94 }
max@0 95
max@0 96
max@0 97
max@0 98 //! non-complex Base - complex scalar (experimental)
max@0 99 template<typename T1>
max@0 100 arma_inline
max@0 101 const mtOp<typename std::complex<typename T1::pod_type>, T1, op_cx_scalar_minus_post>
max@0 102 operator-
max@0 103 (
max@0 104 const Base<typename T1::pod_type, T1>& X,
max@0 105 const std::complex<typename T1::pod_type>& k
max@0 106 )
max@0 107 {
max@0 108 arma_extra_debug_sigprint();
max@0 109
max@0 110 return mtOp<typename std::complex<typename T1::pod_type>, T1, op_cx_scalar_minus_post>('j', X.get_ref(), k);
max@0 111 }
max@0 112
max@0 113
max@0 114
max@0 115 //! subtraction of Base objects with same element type
max@0 116 template<typename T1, typename T2>
max@0 117 arma_inline
max@0 118 const eGlue<T1, T2, eglue_minus>
max@0 119 operator-
max@0 120 (
max@0 121 const Base<typename T1::elem_type,T1>& X,
max@0 122 const Base<typename T1::elem_type,T2>& Y
max@0 123 )
max@0 124 {
max@0 125 arma_extra_debug_sigprint();
max@0 126
max@0 127 return eGlue<T1, T2, eglue_minus>(X.get_ref(), Y.get_ref());
max@0 128 }
max@0 129
max@0 130
max@0 131
max@0 132 //! subtraction of Base objects with different element types
max@0 133 template<typename T1, typename T2>
max@0 134 inline
max@0 135 const mtGlue<typename promote_type<typename T1::elem_type, typename T2::elem_type>::result, T1, T2, glue_mixed_minus>
max@0 136 operator-
max@0 137 (
max@0 138 const Base< typename force_different_type<typename T1::elem_type, typename T2::elem_type>::T1_result, T1>& X,
max@0 139 const Base< typename force_different_type<typename T1::elem_type, typename T2::elem_type>::T2_result, T2>& Y
max@0 140 )
max@0 141 {
max@0 142 arma_extra_debug_sigprint();
max@0 143
max@0 144 typedef typename T1::elem_type eT1;
max@0 145 typedef typename T2::elem_type eT2;
max@0 146
max@0 147 typedef typename promote_type<eT1,eT2>::result out_eT;
max@0 148
max@0 149 promote_type<eT1,eT2>::check();
max@0 150
max@0 151 return mtGlue<out_eT, T1, T2, glue_mixed_minus>( X.get_ref(), Y.get_ref() );
max@0 152 }
max@0 153
max@0 154
max@0 155
max@0 156 //! @}