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 restrictors
20 //! @{
21 
22 
23 
24 // structures for template based restrictions of input/output arguments
25 // (part of the SFINAE approach)
26 // http://en.wikipedia.org/wiki/SFINAE
27 
28 
29 template<typename T> struct arma_scalar_only { };
30 
31 template<> struct arma_scalar_only< u8        > { typedef u8        result; };
32 template<> struct arma_scalar_only< s8        > { typedef s8        result; };
33 template<> struct arma_scalar_only< u16       > { typedef u16       result; };
34 template<> struct arma_scalar_only< s16       > { typedef s16       result; };
35 template<> struct arma_scalar_only< u32       > { typedef u32       result; };
36 template<> struct arma_scalar_only< s32       > { typedef s32       result; };
37 template<> struct arma_scalar_only< u64       > { typedef u64       result; };
38 template<> struct arma_scalar_only< s64       > { typedef s64       result; };
39 template<> struct arma_scalar_only< ulng_t    > { typedef ulng_t    result; };
40 template<> struct arma_scalar_only< slng_t    > { typedef slng_t    result; };
41 template<> struct arma_scalar_only< float     > { typedef float     result; };
42 template<> struct arma_scalar_only< double    > { typedef double    result; };
43 template<> struct arma_scalar_only< cx_float  > { typedef cx_float  result; };
44 template<> struct arma_scalar_only< cx_double > { typedef cx_double result; };
45 
46 
47 
48 template<typename T> struct arma_integral_only { };
49 
50 template<> struct arma_integral_only< u8     > { typedef u8  result; };
51 template<> struct arma_integral_only< s8     > { typedef s8  result; };
52 template<> struct arma_integral_only< u16    > { typedef u16 result; };
53 template<> struct arma_integral_only< s16    > { typedef s16 result; };
54 template<> struct arma_integral_only< u32    > { typedef u32 result; };
55 template<> struct arma_integral_only< s32    > { typedef s32 result; };
56 template<> struct arma_integral_only< u64    > { typedef u64 result; };
57 template<> struct arma_integral_only< s64    > { typedef s64 result; };
58 template<> struct arma_integral_only< ulng_t > { typedef ulng_t result; };
59 template<> struct arma_integral_only< slng_t > { typedef slng_t result; };
60 
61 
62 
63 template<typename T> struct arma_unsigned_integral_only { };
64 
65 template<> struct arma_unsigned_integral_only< u8     > { typedef u8     result; };
66 template<> struct arma_unsigned_integral_only< u16    > { typedef u16    result; };
67 template<> struct arma_unsigned_integral_only< u32    > { typedef u32    result; };
68 template<> struct arma_unsigned_integral_only< u64    > { typedef u64    result; };
69 template<> struct arma_unsigned_integral_only< ulng_t > { typedef ulng_t result; };
70 
71 
72 
73 template<typename T> struct arma_signed_integral_only { };
74 
75 template<> struct arma_signed_integral_only< s8     > { typedef s8     result; };
76 template<> struct arma_signed_integral_only< s16    > { typedef s16    result; };
77 template<> struct arma_signed_integral_only< s32    > { typedef s32    result; };
78 template<> struct arma_signed_integral_only< s64    > { typedef s64    result; };
79 template<> struct arma_signed_integral_only< slng_t > { typedef slng_t result; };
80 
81 
82 
83 template<typename T> struct arma_signed_only { };
84 
85 template<> struct arma_signed_only< s8        > { typedef s8        result; };
86 template<> struct arma_signed_only< s16       > { typedef s16       result; };
87 template<> struct arma_signed_only< s32       > { typedef s32       result; };
88 template<> struct arma_signed_only< s64       > { typedef s64       result; };
89 template<> struct arma_signed_only< slng_t    > { typedef slng_t    result; };
90 template<> struct arma_signed_only< float     > { typedef float     result; };
91 template<> struct arma_signed_only< double    > { typedef double    result; };
92 template<> struct arma_signed_only< cx_float  > { typedef cx_float  result; };
93 template<> struct arma_signed_only< cx_double > { typedef cx_double result; };
94 
95 
96 
97 template<typename T> struct arma_real_only { };
98 
99 template<> struct arma_real_only< float  > { typedef float  result; };
100 template<> struct arma_real_only< double > { typedef double result; };
101 
102 
103 template<typename T> struct arma_real_or_cx_only { };
104 
105 template<> struct arma_real_or_cx_only< float     > { typedef float     result; };
106 template<> struct arma_real_or_cx_only< double    > { typedef double    result; };
107 template<> struct arma_real_or_cx_only< cx_float  > { typedef cx_float  result; };
108 template<> struct arma_real_or_cx_only< cx_double > { typedef cx_double result; };
109 
110 
111 
112 template<typename T> struct arma_cx_only { };
113 
114 template<> struct arma_cx_only< cx_float  > { typedef cx_float  result; };
115 template<> struct arma_cx_only< cx_double > { typedef cx_double result; };
116 
117 
118 
119 template<typename T> struct arma_not_cx                    { typedef T result; };
120 template<typename T> struct arma_not_cx< std::complex<T> > { };
121 
122 
123 
124 template<typename T> struct arma_blas_type_only { };
125 
126 template<> struct arma_blas_type_only< float     > { typedef float     result; };
127 template<> struct arma_blas_type_only< double    > { typedef double    result; };
128 template<> struct arma_blas_type_only< cx_float  > { typedef cx_float  result; };
129 template<> struct arma_blas_type_only< cx_double > { typedef cx_double result; };
130 
131 
132 
133 template<typename T> struct arma_not_blas_type { typedef T result; };
134 
135 template<> struct arma_not_blas_type< float     > {  };
136 template<> struct arma_not_blas_type< double    > {  };
137 template<> struct arma_not_blas_type< cx_float  > {  };
138 template<> struct arma_not_blas_type< cx_double > {  };
139 
140 
141 
142 template<typename T> struct arma_op_rel_only { };
143 
144 template<> struct arma_op_rel_only< op_rel_lt_pre    > { typedef int result; };
145 template<> struct arma_op_rel_only< op_rel_lt_post   > { typedef int result; };
146 template<> struct arma_op_rel_only< op_rel_gt_pre    > { typedef int result; };
147 template<> struct arma_op_rel_only< op_rel_gt_post   > { typedef int result; };
148 template<> struct arma_op_rel_only< op_rel_lteq_pre  > { typedef int result; };
149 template<> struct arma_op_rel_only< op_rel_lteq_post > { typedef int result; };
150 template<> struct arma_op_rel_only< op_rel_gteq_pre  > { typedef int result; };
151 template<> struct arma_op_rel_only< op_rel_gteq_post > { typedef int result; };
152 template<> struct arma_op_rel_only< op_rel_eq        > { typedef int result; };
153 template<> struct arma_op_rel_only< op_rel_noteq     > { typedef int result; };
154 
155 
156 
157 template<typename T> struct arma_not_op_rel { typedef int result; };
158 
159 template<> struct arma_not_op_rel< op_rel_lt_pre    > { };
160 template<> struct arma_not_op_rel< op_rel_lt_post   > { };
161 template<> struct arma_not_op_rel< op_rel_gt_pre    > { };
162 template<> struct arma_not_op_rel< op_rel_gt_post   > { };
163 template<> struct arma_not_op_rel< op_rel_lteq_pre  > { };
164 template<> struct arma_not_op_rel< op_rel_lteq_post > { };
165 template<> struct arma_not_op_rel< op_rel_gteq_pre  > { };
166 template<> struct arma_not_op_rel< op_rel_gteq_post > { };
167 template<> struct arma_not_op_rel< op_rel_eq        > { };
168 template<> struct arma_not_op_rel< op_rel_noteq     > { };
169 
170 
171 
172 template<typename T> struct arma_glue_rel_only { };
173 
174 template<> struct arma_glue_rel_only< glue_rel_lt    > { typedef int result; };
175 template<> struct arma_glue_rel_only< glue_rel_gt    > { typedef int result; };
176 template<> struct arma_glue_rel_only< glue_rel_lteq  > { typedef int result; };
177 template<> struct arma_glue_rel_only< glue_rel_gteq  > { typedef int result; };
178 template<> struct arma_glue_rel_only< glue_rel_eq    > { typedef int result; };
179 template<> struct arma_glue_rel_only< glue_rel_noteq > { typedef int result; };
180 template<> struct arma_glue_rel_only< glue_rel_and   > { typedef int result; };
181 template<> struct arma_glue_rel_only< glue_rel_or    > { typedef int result; };
182 
183 
184 
185 template<typename T> struct arma_Mat_Col_Row_only { };
186 
187 template<typename eT> struct arma_Mat_Col_Row_only< Mat<eT> > { typedef Mat<eT> result; };
188 template<typename eT> struct arma_Mat_Col_Row_only< Col<eT> > { typedef Col<eT> result; };
189 template<typename eT> struct arma_Mat_Col_Row_only< Row<eT> > { typedef Row<eT> result; };
190 
191 
192 
193 template<typename  T> struct arma_Cube_only             { };
194 template<typename eT> struct arma_Cube_only< Cube<eT> > { typedef Cube<eT> result; };
195 
196 
197 template<typename T> struct arma_SpMat_SpCol_SpRow_only { };
198 
199 template<typename eT> struct arma_SpMat_SpCol_SpRow_only< SpMat<eT> > { typedef SpMat<eT> result; };
200 template<typename eT> struct arma_SpMat_SpCol_SpRow_only< SpCol<eT> > { typedef SpCol<eT> result; };
201 template<typename eT> struct arma_SpMat_SpCol_SpRow_only< SpRow<eT> > { typedef SpRow<eT> result; };
202 
203 
204 
205 template<bool> struct enable_if       {                     };
206 template<>     struct enable_if<true> { typedef int result; };
207 
208 
209 template<bool, typename result_type > struct enable_if2                    {                             };
210 template<      typename result_type > struct enable_if2<true, result_type> { typedef result_type result; };
211 
212 
213 
214 //! @}
215