1 ////////////////////////////////////////////////////////////////////////
2 //
3 // Copyright (C) 2008-2021 The Octave Project Developers
4 //
5 // See the file COPYRIGHT.md in the top-level directory of this
6 // distribution or <https://octave.org/copyright/>.
7 //
8 // This file is part of Octave.
9 //
10 // Octave is free software: you can redistribute it and/or modify it
11 // under the terms of the GNU General Public License as published by
12 // the Free Software Foundation, either version 3 of the License, or
13 // (at your option) any later version.
14 //
15 // Octave is distributed in the hope that it will be useful, but
16 // WITHOUT ANY WARRANTY; without even the implied warranty of
17 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 // GNU General Public License for more details.
19 //
20 // You should have received a copy of the GNU General Public License
21 // along with Octave; see the file COPYING. If not, see
22 // <https://www.gnu.org/licenses/>.
23 //
24 ////////////////////////////////////////////////////////////////////////
25
26 #if defined (HAVE_CONFIG_H)
27 # include "config.h"
28 #endif
29
30 #include "byte-swap.h"
31
32 #include "ov-flt-re-diag.h"
33 #include "ov-base-diag.cc"
34 #include "ov-float.h"
35 #include "ov-flt-re-mat.h"
36 #include "ls-utils.h"
37
38
39 template class octave_base_diag<FloatDiagMatrix, FloatMatrix>;
40
41 DEFINE_OV_TYPEID_FUNCTIONS_AND_DATA (octave_float_diag_matrix,
42 "float diagonal matrix", "single");
43
44 static octave_base_value *
default_numeric_conversion_function(const octave_base_value & a)45 default_numeric_conversion_function (const octave_base_value& a)
46 {
47 const octave_float_diag_matrix& v
48 = dynamic_cast<const octave_float_diag_matrix&> (a);
49
50 return new octave_float_matrix (v.float_matrix_value ());
51 }
52
53 octave_base_value::type_conv_info
numeric_conversion_function(void) const54 octave_float_diag_matrix::numeric_conversion_function (void) const
55 {
56 return octave_base_value::type_conv_info (default_numeric_conversion_function,
57 octave_float_matrix::static_type_id ());
58 }
59
60 octave_base_value *
try_narrowing_conversion(void)61 octave_float_diag_matrix::try_narrowing_conversion (void)
62 {
63 octave_base_value *retval = nullptr;
64
65 if (matrix.nelem () == 1)
66 retval = new octave_float_scalar (matrix (0, 0));
67
68 return retval;
69 }
70
71 DiagMatrix
diag_matrix_value(bool) const72 octave_float_diag_matrix::diag_matrix_value (bool) const
73 {
74 return DiagMatrix (matrix);
75 }
76
77 FloatDiagMatrix
float_diag_matrix_value(bool) const78 octave_float_diag_matrix::float_diag_matrix_value (bool) const
79 {
80 return matrix;
81 }
82
83 ComplexDiagMatrix
complex_diag_matrix_value(bool) const84 octave_float_diag_matrix::complex_diag_matrix_value (bool) const
85 {
86 return ComplexDiagMatrix (matrix);
87 }
88
89 FloatComplexDiagMatrix
float_complex_diag_matrix_value(bool) const90 octave_float_diag_matrix::float_complex_diag_matrix_value (bool) const
91 {
92 return FloatComplexDiagMatrix (matrix);
93 }
94
95 octave_value
as_double(void) const96 octave_float_diag_matrix::as_double (void) const
97 {
98 return DiagMatrix (matrix);
99 }
100
101 octave_value
as_single(void) const102 octave_float_diag_matrix::as_single (void) const
103 {
104 return matrix;
105 }
106
107 octave_value
as_int8(void) const108 octave_float_diag_matrix::as_int8 (void) const
109 {
110 return int8_array_value ();
111 }
112
113 octave_value
as_int16(void) const114 octave_float_diag_matrix::as_int16 (void) const
115 {
116 return int16_array_value ();
117 }
118
119 octave_value
as_int32(void) const120 octave_float_diag_matrix::as_int32 (void) const
121 {
122 return int32_array_value ();
123 }
124
125 octave_value
as_int64(void) const126 octave_float_diag_matrix::as_int64 (void) const
127 {
128 return int64_array_value ();
129 }
130
131 octave_value
as_uint8(void) const132 octave_float_diag_matrix::as_uint8 (void) const
133 {
134 return uint8_array_value ();
135 }
136
137 octave_value
as_uint16(void) const138 octave_float_diag_matrix::as_uint16 (void) const
139 {
140 return uint16_array_value ();
141 }
142
143 octave_value
as_uint32(void) const144 octave_float_diag_matrix::as_uint32 (void) const
145 {
146 return uint32_array_value ();
147 }
148
149 octave_value
as_uint64(void) const150 octave_float_diag_matrix::as_uint64 (void) const
151 {
152 return uint64_array_value ();
153 }
154
155 octave_value
map(unary_mapper_t umap) const156 octave_float_diag_matrix::map (unary_mapper_t umap) const
157 {
158 switch (umap)
159 {
160 case umap_abs:
161 return matrix.abs ();
162 case umap_real:
163 case umap_conj:
164 return matrix;
165 case umap_imag:
166 return DiagMatrix (matrix.rows (), matrix.cols (), 0.0);
167 case umap_sqrt:
168 {
169 FloatComplexColumnVector tmp = matrix.extract_diag ().map<FloatComplex>
170 (octave::math::rc_sqrt);
171 FloatComplexDiagMatrix retval (tmp);
172 retval.resize (matrix.rows (), matrix.columns ());
173 return retval;
174 }
175 default:
176 return to_dense ().map (umap);
177 }
178 }
179
180 bool
save_binary(std::ostream & os,bool)181 octave_float_diag_matrix::save_binary (std::ostream& os,
182 bool /* save_as_floats*/)
183 {
184
185 int32_t r = matrix.rows ();
186 int32_t c = matrix.cols ();
187 os.write (reinterpret_cast<char *> (&r), 4);
188 os.write (reinterpret_cast<char *> (&c), 4);
189
190 FloatMatrix m = FloatMatrix (matrix.extract_diag ());
191 save_type st = LS_FLOAT;
192 if (matrix.length () > 8192) // FIXME: make this configurable.
193 {
194 float max_val, min_val;
195 if (m.all_integers (max_val, min_val))
196 st = get_save_type (max_val, min_val);
197 }
198
199 const float *mtmp = m.data ();
200 write_floats (os, mtmp, st, m.numel ());
201
202 return true;
203 }
204
205 bool
load_binary(std::istream & is,bool swap,octave::mach_info::float_format fmt)206 octave_float_diag_matrix::load_binary (std::istream& is, bool swap,
207 octave::mach_info::float_format fmt)
208 {
209 int32_t r, c;
210 char tmp;
211 if (! (is.read (reinterpret_cast<char *> (&r), 4)
212 && is.read (reinterpret_cast<char *> (&c), 4)
213 && is.read (reinterpret_cast<char *> (&tmp), 1)))
214 return false;
215 if (swap)
216 {
217 swap_bytes<4> (&r);
218 swap_bytes<4> (&c);
219 }
220
221 FloatDiagMatrix m (r, c);
222 float *re = m.fortran_vec ();
223 octave_idx_type len = m.length ();
224 read_floats (is, re, static_cast<save_type> (tmp), len, swap, fmt);
225
226 if (! is)
227 return false;
228
229 matrix = m;
230
231 return true;
232 }
233
234 bool
chk_valid_scalar(const octave_value & val,float & x) const235 octave_float_diag_matrix::chk_valid_scalar (const octave_value& val,
236 float& x) const
237 {
238 bool retval = val.is_real_scalar ();
239 if (retval)
240 x = val.float_value ();
241 return retval;
242 }
243