1 // SPDX-License-Identifier: Apache-2.0
2 //
3 // Copyright 2008-2016 Conrad Sanderson (http://conradsanderson.id.au)
4 // Copyright 2008-2016 National ICT Australia (NICTA)
5 //
6 // Licensed under the Apache License, Version 2.0 (the "License");
7 // you may not use this file except in compliance with the License.
8 // You may obtain a copy of the License at
9 // http://www.apache.org/licenses/LICENSE-2.0
10 //
11 // Unless required by applicable law or agreed to in writing, software
12 // distributed under the License is distributed on an "AS IS" BASIS,
13 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 // See the License for the specific language governing permissions and
15 // limitations under the License.
16 // ------------------------------------------------------------------------
17
18
19 //! \addtogroup glue_hypot
20 //! @{
21
22
23
24 template<typename T1, typename T2>
25 inline
26 void
apply(Mat<typename T1::elem_type> & out,const Glue<T1,T2,glue_hypot> & expr)27 glue_hypot::apply(Mat<typename T1::elem_type>& out, const Glue<T1, T2, glue_hypot>& expr)
28 {
29 arma_extra_debug_sigprint();
30
31 typedef typename T1::elem_type eT;
32
33 const Proxy<T1> P1(expr.A);
34 const Proxy<T2> P2(expr.B);
35
36 arma_assert_same_size(P1, P2, "hypot()");
37
38 const bool bad_alias = ( (Proxy<T1>::has_subview && P1.is_alias(out)) || (Proxy<T2>::has_subview && P2.is_alias(out)) );
39
40 if(bad_alias == false)
41 {
42 glue_hypot::apply_noalias(out, P1, P2);
43 }
44 else
45 {
46 Mat<eT> tmp;
47
48 glue_hypot::apply_noalias(tmp, P1, P2);
49
50 out.steal_mem(tmp);
51 }
52 }
53
54
55
56 template<typename T1, typename T2>
57 inline
58 void
apply_noalias(Mat<typename T1::elem_type> & out,const Proxy<T1> & P1,const Proxy<T2> & P2)59 glue_hypot::apply_noalias(Mat<typename T1::elem_type>& out, const Proxy<T1>& P1, const Proxy<T2>& P2)
60 {
61 arma_extra_debug_sigprint();
62
63 typedef typename T1::elem_type eT;
64
65 const uword n_rows = P1.get_n_rows();
66 const uword n_cols = P1.get_n_cols();
67
68 out.set_size(n_rows, n_cols);
69
70 eT* out_mem = out.memptr();
71
72 if( (Proxy<T1>::use_at == false) && (Proxy<T2>::use_at == false) )
73 {
74 typename Proxy<T1>::ea_type eaP1 = P1.get_ea();
75 typename Proxy<T2>::ea_type eaP2 = P2.get_ea();
76
77 const uword N = P1.get_n_elem();
78
79 for(uword i=0; i<N; ++i)
80 {
81 out_mem[i] = arma_hypot( eaP1[i], eaP2[i] );
82 }
83 }
84 else
85 {
86 for(uword col=0; col < n_cols; ++col)
87 for(uword row=0; row < n_rows; ++row)
88 {
89 *out_mem = arma_hypot( P1.at(row,col), P2.at(row,col) );
90 out_mem++;
91 }
92 }
93 }
94
95
96
97 template<typename T1, typename T2>
98 inline
99 void
apply(Cube<typename T1::elem_type> & out,const GlueCube<T1,T2,glue_hypot> & expr)100 glue_hypot::apply(Cube<typename T1::elem_type>& out, const GlueCube<T1, T2, glue_hypot>& expr)
101 {
102 arma_extra_debug_sigprint();
103
104 typedef typename T1::elem_type eT;
105
106 const ProxyCube<T1> P1(expr.A);
107 const ProxyCube<T2> P2(expr.B);
108
109 arma_assert_same_size(P1, P2, "hypot()");
110
111 const bool bad_alias = ( (ProxyCube<T1>::has_subview && P1.is_alias(out)) || (ProxyCube<T2>::has_subview && P2.is_alias(out)) );
112
113 if(bad_alias == false)
114 {
115 glue_hypot::apply_noalias(out, P1, P2);
116 }
117 else
118 {
119 Cube<eT> tmp;
120
121 glue_hypot::apply_noalias(tmp, P1, P2);
122
123 out.steal_mem(tmp);
124 }
125 }
126
127
128
129 template<typename T1, typename T2>
130 inline
131 void
apply_noalias(Cube<typename T1::elem_type> & out,const ProxyCube<T1> & P1,const ProxyCube<T2> & P2)132 glue_hypot::apply_noalias(Cube<typename T1::elem_type>& out, const ProxyCube<T1>& P1, const ProxyCube<T2>& P2)
133 {
134 arma_extra_debug_sigprint();
135
136 typedef typename T1::elem_type eT;
137
138 const uword n_rows = P1.get_n_rows();
139 const uword n_cols = P1.get_n_cols();
140 const uword n_slices = P1.get_n_slices();
141
142 out.set_size(n_rows, n_cols, n_slices);
143
144 eT* out_mem = out.memptr();
145
146 if( (ProxyCube<T1>::use_at == false) && (ProxyCube<T2>::use_at == false) )
147 {
148 typename ProxyCube<T1>::ea_type eaP1 = P1.get_ea();
149 typename ProxyCube<T2>::ea_type eaP2 = P2.get_ea();
150
151 const uword N = P1.get_n_elem();
152
153 for(uword i=0; i<N; ++i)
154 {
155 out_mem[i] = arma_hypot( eaP1[i], eaP2[i] );
156 }
157 }
158 else
159 {
160 for(uword slice=0; slice < n_slices; ++slice)
161 for(uword col=0; col < n_cols; ++col )
162 for(uword row=0; row < n_rows; ++row )
163 {
164 *out_mem = arma_hypot( P1.at(row,col,slice), P2.at(row,col,slice) );
165 out_mem++;
166 }
167 }
168 }
169
170
171
172 //! @}
173