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annotate liboctave/lo-utils.cc @ 8870:eea0e1b45ec0

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optimize string manipulation in lookfor
author Jaroslav Hajek <highegg@gmail.com>
date Wed, 25 Feb 2009 10:21:33 +0100
parents 82be108cc558
children eb63fbe60fab
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
1993
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1 // utils.cc
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2 /*
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3
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4 Copyright (C) 1996, 1997, 2000, 2002, 2003, 2004, 2005, 2006, 2007
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5 John W. Eaton
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6
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7 This file is part of Octave.
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8
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9 Octave is free software; you can redistribute it and/or modify it
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10 under the terms of the GNU General Public License as published by the
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11 Free Software Foundation; either version 3 of the License, or (at your
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12 option) any later version.
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13
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14 Octave is distributed in the hope that it will be useful, but WITHOUT
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15 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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16 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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17 for more details.
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18
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19 You should have received a copy of the GNU General Public License
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20 along with Octave; see the file COPYING. If not, see
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21 <http://www.gnu.org/licenses/>.
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22
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23 */
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24
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25 #ifdef HAVE_CONFIG_H
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26 #include <config.h>
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27 #endif
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28
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29 #include <cctype>
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30 #include <cstdlib>
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31 #include <cstdio>
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32 #include <cstring>
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33
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34 #include <limits>
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35 #include <string>
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36
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37 #ifdef HAVE_UNISTD_H
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38 #ifdef HAVE_SYS_TYPES_H
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39 #include <sys/types.h>
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40 #endif
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41 #include <unistd.h>
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42 #endif
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43
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44 #include "lo-error.h"
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45 #include "lo-ieee.h"
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46 #include "lo-mappers.h"
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47 #include "lo-utils.h"
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48
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49 // Convert X to the nearest integer value. Should not pass NaN to
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50 // this function.
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51
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52 // Sometimes you need a large integer, but not always.
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53
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54 octave_idx_type
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55 NINTbig (double x)
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56 {
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57 if (x > std::numeric_limits<octave_idx_type>::max ())
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58 return std::numeric_limits<octave_idx_type>::max ();
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59 else if (x < std::numeric_limits<octave_idx_type>::min ())
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60 return std::numeric_limits<octave_idx_type>::min ();
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61 else
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62 return static_cast<octave_idx_type> ((x > 0) ? (x + 0.5) : (x - 0.5));
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63 }
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64
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65 octave_idx_type
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66 NINTbig (float x)
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67 {
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68 if (x > std::numeric_limits<octave_idx_type>::max ())
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69 return std::numeric_limits<octave_idx_type>::max ();
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70 else if (x < std::numeric_limits<octave_idx_type>::min ())
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71 return std::numeric_limits<octave_idx_type>::min ();
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72 else
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73 return static_cast<octave_idx_type> ((x > 0) ? (x + 0.5) : (x - 0.5));
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74 }
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75
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76 int
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77 NINT (double x)
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78 {
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79 if (x > std::numeric_limits<int>::max ())
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80 return std::numeric_limits<int>::max ();
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81 else if (x < std::numeric_limits<int>::min ())
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82 return std::numeric_limits<int>::min ();
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83 else
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84 return static_cast<int> ((x > 0) ? (x + 0.5) : (x - 0.5));
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85 }
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86
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87 int
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88 NINT (float x)
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89 {
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90 if (x > std::numeric_limits<int>::max ())
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91 return std::numeric_limits<int>::max ();
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92 else if (x < std::numeric_limits<int>::min ())
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93 return std::numeric_limits<int>::min ();
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94 else
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95 return static_cast<int> ((x > 0) ? (x + 0.5) : (x - 0.5));
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96 }
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97
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98 double
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99 D_NINT (double x)
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100 {
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101 if (xisinf (x) || xisnan (x))
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102 return x;
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103 else
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104 return floor (x + 0.5);
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105 }
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106
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107 float
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108 F_NINT (float x)
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109 {
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110 if (xisinf (x) || xisnan (x))
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111 return x;
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112 else
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113 return floor (x + 0.5);
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114 }
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115
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116 // Save a string.
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117
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118 char *
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119 strsave (const char *s)
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120 {
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121 if (! s)
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122 return 0;
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123
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124 int len = strlen (s);
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125 char *tmp = new char [len+1];
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126 tmp = strcpy (tmp, s);
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127 return tmp;
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128 }
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129
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130 // This function was adapted from xputenv from Karl Berry's kpathsearch
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131 // library.
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132
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133 // FIXME -- make this do the right thing if we don't have a
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134 // SMART_PUTENV.
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135
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136 void
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137 octave_putenv (const std::string& name, const std::string& value)
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138 {
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139 int new_len = name.length () + value.length () + 2;
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140
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141 char *new_item = static_cast<char*> (malloc (new_len));
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142
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143 sprintf (new_item, "%s=%s", name.c_str (), value.c_str ());
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144
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145 // As far as I can see there's no way to distinguish between the
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146 // various errors; putenv doesn't have errno values.
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147
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148 if (putenv (new_item) < 0)
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149 (*current_liboctave_error_handler) ("putenv (%s) failed", new_item);
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150 }
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151
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152 std::string
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153 octave_fgets (FILE *f)
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154 {
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parents: 4130
diff changeset
155 bool eof;
c0a23a13eea2 [project @ 2003-10-03 02:52:46 by jwe]
jwe
parents: 4130
diff changeset
156 return octave_fgets (f, eof);
c0a23a13eea2 [project @ 2003-10-03 02:52:46 by jwe]
jwe
parents: 4130
diff changeset
157 }
c0a23a13eea2 [project @ 2003-10-03 02:52:46 by jwe]
jwe
parents: 4130
diff changeset
158
c0a23a13eea2 [project @ 2003-10-03 02:52:46 by jwe]
jwe
parents: 4130
diff changeset
159 std::string
c0a23a13eea2 [project @ 2003-10-03 02:52:46 by jwe]
jwe
parents: 4130
diff changeset
160 octave_fgets (FILE *f, bool& eof)
c0a23a13eea2 [project @ 2003-10-03 02:52:46 by jwe]
jwe
parents: 4130
diff changeset
161 {
c0a23a13eea2 [project @ 2003-10-03 02:52:46 by jwe]
jwe
parents: 4130
diff changeset
162 eof = false;
c0a23a13eea2 [project @ 2003-10-03 02:52:46 by jwe]
jwe
parents: 4130
diff changeset
163
3504
5eef8a2294bd [project @ 2000-02-01 10:06:51 by jwe]
jwe
parents: 2926
diff changeset
164 std::string retval;
2926
66ef74ee5d9f [project @ 1997-05-05 03:20:52 by jwe]
jwe
parents: 2847
diff changeset
165
66ef74ee5d9f [project @ 1997-05-05 03:20:52 by jwe]
jwe
parents: 2847
diff changeset
166 int grow_size = 1024;
66ef74ee5d9f [project @ 1997-05-05 03:20:52 by jwe]
jwe
parents: 2847
diff changeset
167 int max_size = grow_size;
66ef74ee5d9f [project @ 1997-05-05 03:20:52 by jwe]
jwe
parents: 2847
diff changeset
168
66ef74ee5d9f [project @ 1997-05-05 03:20:52 by jwe]
jwe
parents: 2847
diff changeset
169 char *buf = static_cast<char *> (malloc (max_size));
66ef74ee5d9f [project @ 1997-05-05 03:20:52 by jwe]
jwe
parents: 2847
diff changeset
170 char *bufptr = buf;
66ef74ee5d9f [project @ 1997-05-05 03:20:52 by jwe]
jwe
parents: 2847
diff changeset
171 int len = 0;
66ef74ee5d9f [project @ 1997-05-05 03:20:52 by jwe]
jwe
parents: 2847
diff changeset
172
66ef74ee5d9f [project @ 1997-05-05 03:20:52 by jwe]
jwe
parents: 2847
diff changeset
173 do
66ef74ee5d9f [project @ 1997-05-05 03:20:52 by jwe]
jwe
parents: 2847
diff changeset
174 {
66ef74ee5d9f [project @ 1997-05-05 03:20:52 by jwe]
jwe
parents: 2847
diff changeset
175 if (fgets (bufptr, grow_size, f))
66ef74ee5d9f [project @ 1997-05-05 03:20:52 by jwe]
jwe
parents: 2847
diff changeset
176 {
66ef74ee5d9f [project @ 1997-05-05 03:20:52 by jwe]
jwe
parents: 2847
diff changeset
177 len = strlen (bufptr);
66ef74ee5d9f [project @ 1997-05-05 03:20:52 by jwe]
jwe
parents: 2847
diff changeset
178
66ef74ee5d9f [project @ 1997-05-05 03:20:52 by jwe]
jwe
parents: 2847
diff changeset
179 if (len == grow_size - 1)
66ef74ee5d9f [project @ 1997-05-05 03:20:52 by jwe]
jwe
parents: 2847
diff changeset
180 {
66ef74ee5d9f [project @ 1997-05-05 03:20:52 by jwe]
jwe
parents: 2847
diff changeset
181 int tmp = bufptr - buf + grow_size - 1;
66ef74ee5d9f [project @ 1997-05-05 03:20:52 by jwe]
jwe
parents: 2847
diff changeset
182 grow_size *= 2;
66ef74ee5d9f [project @ 1997-05-05 03:20:52 by jwe]
jwe
parents: 2847
diff changeset
183 max_size += grow_size;
66ef74ee5d9f [project @ 1997-05-05 03:20:52 by jwe]
jwe
parents: 2847
diff changeset
184 buf = static_cast<char *> (realloc (buf, max_size));
66ef74ee5d9f [project @ 1997-05-05 03:20:52 by jwe]
jwe
parents: 2847
diff changeset
185 bufptr = buf + tmp;
66ef74ee5d9f [project @ 1997-05-05 03:20:52 by jwe]
jwe
parents: 2847
diff changeset
186
66ef74ee5d9f [project @ 1997-05-05 03:20:52 by jwe]
jwe
parents: 2847
diff changeset
187 if (*(bufptr-1) == '\n')
66ef74ee5d9f [project @ 1997-05-05 03:20:52 by jwe]
jwe
parents: 2847
diff changeset
188 {
66ef74ee5d9f [project @ 1997-05-05 03:20:52 by jwe]
jwe
parents: 2847
diff changeset
189 *bufptr = '\0';
66ef74ee5d9f [project @ 1997-05-05 03:20:52 by jwe]
jwe
parents: 2847
diff changeset
190 retval = buf;
66ef74ee5d9f [project @ 1997-05-05 03:20:52 by jwe]
jwe
parents: 2847
diff changeset
191 }
66ef74ee5d9f [project @ 1997-05-05 03:20:52 by jwe]
jwe
parents: 2847
diff changeset
192 }
66ef74ee5d9f [project @ 1997-05-05 03:20:52 by jwe]
jwe
parents: 2847
diff changeset
193 else if (bufptr[len-1] != '\n')
66ef74ee5d9f [project @ 1997-05-05 03:20:52 by jwe]
jwe
parents: 2847
diff changeset
194 {
66ef74ee5d9f [project @ 1997-05-05 03:20:52 by jwe]
jwe
parents: 2847
diff changeset
195 bufptr[len++] = '\n';
66ef74ee5d9f [project @ 1997-05-05 03:20:52 by jwe]
jwe
parents: 2847
diff changeset
196 bufptr[len] = '\0';
66ef74ee5d9f [project @ 1997-05-05 03:20:52 by jwe]
jwe
parents: 2847
diff changeset
197 retval = buf;
66ef74ee5d9f [project @ 1997-05-05 03:20:52 by jwe]
jwe
parents: 2847
diff changeset
198 }
66ef74ee5d9f [project @ 1997-05-05 03:20:52 by jwe]
jwe
parents: 2847
diff changeset
199 else
66ef74ee5d9f [project @ 1997-05-05 03:20:52 by jwe]
jwe
parents: 2847
diff changeset
200 retval = buf;
66ef74ee5d9f [project @ 1997-05-05 03:20:52 by jwe]
jwe
parents: 2847
diff changeset
201 }
66ef74ee5d9f [project @ 1997-05-05 03:20:52 by jwe]
jwe
parents: 2847
diff changeset
202 else
66ef74ee5d9f [project @ 1997-05-05 03:20:52 by jwe]
jwe
parents: 2847
diff changeset
203 {
66ef74ee5d9f [project @ 1997-05-05 03:20:52 by jwe]
jwe
parents: 2847
diff changeset
204 if (len == 0)
66ef74ee5d9f [project @ 1997-05-05 03:20:52 by jwe]
jwe
parents: 2847
diff changeset
205 {
4527
c0a23a13eea2 [project @ 2003-10-03 02:52:46 by jwe]
jwe
parents: 4130
diff changeset
206 eof = true;
c0a23a13eea2 [project @ 2003-10-03 02:52:46 by jwe]
jwe
parents: 4130
diff changeset
207
2926
66ef74ee5d9f [project @ 1997-05-05 03:20:52 by jwe]
jwe
parents: 2847
diff changeset
208 free (buf);
66ef74ee5d9f [project @ 1997-05-05 03:20:52 by jwe]
jwe
parents: 2847
diff changeset
209
66ef74ee5d9f [project @ 1997-05-05 03:20:52 by jwe]
jwe
parents: 2847
diff changeset
210 buf = 0;
66ef74ee5d9f [project @ 1997-05-05 03:20:52 by jwe]
jwe
parents: 2847
diff changeset
211 }
66ef74ee5d9f [project @ 1997-05-05 03:20:52 by jwe]
jwe
parents: 2847
diff changeset
212
66ef74ee5d9f [project @ 1997-05-05 03:20:52 by jwe]
jwe
parents: 2847
diff changeset
213 break;
66ef74ee5d9f [project @ 1997-05-05 03:20:52 by jwe]
jwe
parents: 2847
diff changeset
214 }
66ef74ee5d9f [project @ 1997-05-05 03:20:52 by jwe]
jwe
parents: 2847
diff changeset
215 }
66ef74ee5d9f [project @ 1997-05-05 03:20:52 by jwe]
jwe
parents: 2847
diff changeset
216 while (retval.empty ());
66ef74ee5d9f [project @ 1997-05-05 03:20:52 by jwe]
jwe
parents: 2847
diff changeset
217
66ef74ee5d9f [project @ 1997-05-05 03:20:52 by jwe]
jwe
parents: 2847
diff changeset
218 if (buf)
66ef74ee5d9f [project @ 1997-05-05 03:20:52 by jwe]
jwe
parents: 2847
diff changeset
219 free (buf);
66ef74ee5d9f [project @ 1997-05-05 03:20:52 by jwe]
jwe
parents: 2847
diff changeset
220
66ef74ee5d9f [project @ 1997-05-05 03:20:52 by jwe]
jwe
parents: 2847
diff changeset
221 return retval;
66ef74ee5d9f [project @ 1997-05-05 03:20:52 by jwe]
jwe
parents: 2847
diff changeset
222 }
66ef74ee5d9f [project @ 1997-05-05 03:20:52 by jwe]
jwe
parents: 2847
diff changeset
223
3970
4f884e25aab9 [project @ 2002-07-02 04:14:35 by jwe]
jwe
parents: 3504
diff changeset
224 std::string
4f884e25aab9 [project @ 2002-07-02 04:14:35 by jwe]
jwe
parents: 3504
diff changeset
225 octave_fgetl (FILE *f)
4f884e25aab9 [project @ 2002-07-02 04:14:35 by jwe]
jwe
parents: 3504
diff changeset
226 {
4527
c0a23a13eea2 [project @ 2003-10-03 02:52:46 by jwe]
jwe
parents: 4130
diff changeset
227 bool eof;
c0a23a13eea2 [project @ 2003-10-03 02:52:46 by jwe]
jwe
parents: 4130
diff changeset
228 return octave_fgetl (f, eof);
c0a23a13eea2 [project @ 2003-10-03 02:52:46 by jwe]
jwe
parents: 4130
diff changeset
229 }
c0a23a13eea2 [project @ 2003-10-03 02:52:46 by jwe]
jwe
parents: 4130
diff changeset
230
c0a23a13eea2 [project @ 2003-10-03 02:52:46 by jwe]
jwe
parents: 4130
diff changeset
231 std::string
c0a23a13eea2 [project @ 2003-10-03 02:52:46 by jwe]
jwe
parents: 4130
diff changeset
232 octave_fgetl (FILE *f, bool& eof)
c0a23a13eea2 [project @ 2003-10-03 02:52:46 by jwe]
jwe
parents: 4130
diff changeset
233 {
c0a23a13eea2 [project @ 2003-10-03 02:52:46 by jwe]
jwe
parents: 4130
diff changeset
234 std::string retval = octave_fgets (f, eof);
3970
4f884e25aab9 [project @ 2002-07-02 04:14:35 by jwe]
jwe
parents: 3504
diff changeset
235
4f884e25aab9 [project @ 2002-07-02 04:14:35 by jwe]
jwe
parents: 3504
diff changeset
236 size_t len = retval.length ();
4f884e25aab9 [project @ 2002-07-02 04:14:35 by jwe]
jwe
parents: 3504
diff changeset
237
4f884e25aab9 [project @ 2002-07-02 04:14:35 by jwe]
jwe
parents: 3504
diff changeset
238 if (retval[len-1] == '\n')
4f884e25aab9 [project @ 2002-07-02 04:14:35 by jwe]
jwe
parents: 3504
diff changeset
239 retval.resize (len-1);
4f884e25aab9 [project @ 2002-07-02 04:14:35 by jwe]
jwe
parents: 3504
diff changeset
240
4f884e25aab9 [project @ 2002-07-02 04:14:35 by jwe]
jwe
parents: 3504
diff changeset
241 return retval;
4f884e25aab9 [project @ 2002-07-02 04:14:35 by jwe]
jwe
parents: 3504
diff changeset
242 }
4f884e25aab9 [project @ 2002-07-02 04:14:35 by jwe]
jwe
parents: 3504
diff changeset
243
4130
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
244 static inline double
6194
0d2ff0dfb159 [project @ 2006-12-01 05:25:38 by jwe]
jwe
parents: 5775
diff changeset
245 read_inf_nan_na (std::istream& is, char c, char sign = '+')
4130
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
246 {
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
247 double d = 0.0;
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
248
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
249 switch (c)
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
250 {
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
251 case 'i': case 'I':
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
252 {
6897
935d23e16951 [project @ 2007-09-13 19:13:56 by jwe]
jwe
parents: 6490
diff changeset
253 c = is.get ();
4130
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
254 if (c == 'n' || c == 'N')
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
255 {
6897
935d23e16951 [project @ 2007-09-13 19:13:56 by jwe]
jwe
parents: 6490
diff changeset
256 c = is.get ();
4130
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
257 if (c == 'f' || c == 'F')
6194
0d2ff0dfb159 [project @ 2006-12-01 05:25:38 by jwe]
jwe
parents: 5775
diff changeset
258 d = sign == '-' ? -octave_Inf : octave_Inf;
4130
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
259 else
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
260 is.putback (c);
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
261 }
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
262 else
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
263 is.putback (c);
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
264 }
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
265 break;
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
266
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
267 case 'n': case 'N':
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
268 {
6897
935d23e16951 [project @ 2007-09-13 19:13:56 by jwe]
jwe
parents: 6490
diff changeset
269 c = is.get ();
4130
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
270 if (c == 'a' || c == 'A')
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
271 {
6897
935d23e16951 [project @ 2007-09-13 19:13:56 by jwe]
jwe
parents: 6490
diff changeset
272 c = is.get ();
4130
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
273 if (c == 'n' || c == 'N')
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
274 d = octave_NaN;
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
275 else
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
276 {
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
277 is.putback (c);
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
278 d = octave_NA;
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
279 }
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
280 }
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
281 else
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
282 is.putback (c);
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
283 }
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
284 break;
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
285
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
286 default:
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
287 abort ();
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
288 }
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
289
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
290 return d;
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
291 }
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
292
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
293 double
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
294 octave_read_double (std::istream& is)
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
295 {
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
296 double d = 0.0;
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
297
6907
c8081f4c094f [project @ 2007-09-17 17:31:10 by jwe]
jwe
parents: 6897
diff changeset
298 char c1 = ' ';
4130
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
299
6907
c8081f4c094f [project @ 2007-09-17 17:31:10 by jwe]
jwe
parents: 6897
diff changeset
300 while (isspace (c1))
c8081f4c094f [project @ 2007-09-17 17:31:10 by jwe]
jwe
parents: 6897
diff changeset
301 c1 = is.get ();
c8081f4c094f [project @ 2007-09-17 17:31:10 by jwe]
jwe
parents: 6897
diff changeset
302
6194
0d2ff0dfb159 [project @ 2006-12-01 05:25:38 by jwe]
jwe
parents: 5775
diff changeset
303 switch (c1)
4130
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
304 {
6194
0d2ff0dfb159 [project @ 2006-12-01 05:25:38 by jwe]
jwe
parents: 5775
diff changeset
305 case '-':
0d2ff0dfb159 [project @ 2006-12-01 05:25:38 by jwe]
jwe
parents: 5775
diff changeset
306 {
0d2ff0dfb159 [project @ 2006-12-01 05:25:38 by jwe]
jwe
parents: 5775
diff changeset
307 char c2 = 0;
6897
935d23e16951 [project @ 2007-09-13 19:13:56 by jwe]
jwe
parents: 6490
diff changeset
308 c2 = is.get ();
6194
0d2ff0dfb159 [project @ 2006-12-01 05:25:38 by jwe]
jwe
parents: 5775
diff changeset
309 if (c2 == 'i' || c2 == 'I')
0d2ff0dfb159 [project @ 2006-12-01 05:25:38 by jwe]
jwe
parents: 5775
diff changeset
310 d = read_inf_nan_na (is, c2, c1);
0d2ff0dfb159 [project @ 2006-12-01 05:25:38 by jwe]
jwe
parents: 5775
diff changeset
311 else
0d2ff0dfb159 [project @ 2006-12-01 05:25:38 by jwe]
jwe
parents: 5775
diff changeset
312 {
0d2ff0dfb159 [project @ 2006-12-01 05:25:38 by jwe]
jwe
parents: 5775
diff changeset
313 is.putback (c2);
0d2ff0dfb159 [project @ 2006-12-01 05:25:38 by jwe]
jwe
parents: 5775
diff changeset
314 is.putback (c1);
6202
e5ed0d1edddc [project @ 2006-12-05 21:49:44 by jwe]
jwe
parents: 6194
diff changeset
315 is >> d;
6194
0d2ff0dfb159 [project @ 2006-12-01 05:25:38 by jwe]
jwe
parents: 5775
diff changeset
316 }
0d2ff0dfb159 [project @ 2006-12-01 05:25:38 by jwe]
jwe
parents: 5775
diff changeset
317 }
0d2ff0dfb159 [project @ 2006-12-01 05:25:38 by jwe]
jwe
parents: 5775
diff changeset
318 break;
0d2ff0dfb159 [project @ 2006-12-01 05:25:38 by jwe]
jwe
parents: 5775
diff changeset
319
0d2ff0dfb159 [project @ 2006-12-01 05:25:38 by jwe]
jwe
parents: 5775
diff changeset
320 case '+':
0d2ff0dfb159 [project @ 2006-12-01 05:25:38 by jwe]
jwe
parents: 5775
diff changeset
321 {
0d2ff0dfb159 [project @ 2006-12-01 05:25:38 by jwe]
jwe
parents: 5775
diff changeset
322 char c2 = 0;
6897
935d23e16951 [project @ 2007-09-13 19:13:56 by jwe]
jwe
parents: 6490
diff changeset
323 c2 = is.get ();
6194
0d2ff0dfb159 [project @ 2006-12-01 05:25:38 by jwe]
jwe
parents: 5775
diff changeset
324 if (c2 == 'i' || c2 == 'I')
0d2ff0dfb159 [project @ 2006-12-01 05:25:38 by jwe]
jwe
parents: 5775
diff changeset
325 d = read_inf_nan_na (is, c2, c1);
0d2ff0dfb159 [project @ 2006-12-01 05:25:38 by jwe]
jwe
parents: 5775
diff changeset
326 else
0d2ff0dfb159 [project @ 2006-12-01 05:25:38 by jwe]
jwe
parents: 5775
diff changeset
327 {
0d2ff0dfb159 [project @ 2006-12-01 05:25:38 by jwe]
jwe
parents: 5775
diff changeset
328 is.putback (c2);
0d2ff0dfb159 [project @ 2006-12-01 05:25:38 by jwe]
jwe
parents: 5775
diff changeset
329 is.putback (c1);
6202
e5ed0d1edddc [project @ 2006-12-05 21:49:44 by jwe]
jwe
parents: 6194
diff changeset
330 is >> d;
6194
0d2ff0dfb159 [project @ 2006-12-01 05:25:38 by jwe]
jwe
parents: 5775
diff changeset
331 }
0d2ff0dfb159 [project @ 2006-12-01 05:25:38 by jwe]
jwe
parents: 5775
diff changeset
332 }
0d2ff0dfb159 [project @ 2006-12-01 05:25:38 by jwe]
jwe
parents: 5775
diff changeset
333 break;
0d2ff0dfb159 [project @ 2006-12-01 05:25:38 by jwe]
jwe
parents: 5775
diff changeset
334
4130
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
335 case 'i': case 'I':
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
336 case 'n': case 'N':
6194
0d2ff0dfb159 [project @ 2006-12-01 05:25:38 by jwe]
jwe
parents: 5775
diff changeset
337 d = read_inf_nan_na (is, c1);
4130
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
338 break;
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
339
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
340 default:
6194
0d2ff0dfb159 [project @ 2006-12-01 05:25:38 by jwe]
jwe
parents: 5775
diff changeset
341 is.putback (c1);
4130
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
342 is >> d;
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
343 }
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
344
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
345 return d;
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
346 }
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
347
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
348 Complex
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
349 octave_read_complex (std::istream& is)
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
350 {
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
351 double re = 0.0, im = 0.0;
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
352
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
353 Complex cx = 0.0;
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
354
6907
c8081f4c094f [project @ 2007-09-17 17:31:10 by jwe]
jwe
parents: 6897
diff changeset
355 char ch = ' ';
4130
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
356
6907
c8081f4c094f [project @ 2007-09-17 17:31:10 by jwe]
jwe
parents: 6897
diff changeset
357 while (isspace (ch))
c8081f4c094f [project @ 2007-09-17 17:31:10 by jwe]
jwe
parents: 6897
diff changeset
358 ch = is.get ();
4130
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
359
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
360 if (ch == '(')
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
361 {
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
362 re = octave_read_double (is);
6897
935d23e16951 [project @ 2007-09-13 19:13:56 by jwe]
jwe
parents: 6490
diff changeset
363 ch = is.get ();
4130
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
364
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
365 if (ch == ',')
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
366 {
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
367 im = octave_read_double (is);
6897
935d23e16951 [project @ 2007-09-13 19:13:56 by jwe]
jwe
parents: 6490
diff changeset
368 ch = is.get ();
4130
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
369
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
370 if (ch == ')')
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
371 cx = Complex (re, im);
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
372 else
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
373 is.setstate (std::ios::failbit);
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
374 }
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
375 else if (ch == ')')
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
376 cx = re;
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
377 else
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
378 is.setstate (std::ios::failbit);
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
379 }
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
380 else
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
381 {
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
382 is.putback (ch);
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
383 cx = octave_read_double (is);
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
384 }
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
385
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
386 return cx;
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
387
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
388 }
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
389
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
390 void
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
391 octave_write_double (std::ostream& os, double d)
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
392 {
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
393 if (lo_ieee_is_NA (d))
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
394 os << "NA";
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
395 else if (lo_ieee_isnan (d))
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
396 os << "NaN";
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
397 else if (lo_ieee_isinf (d))
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
398 os << (d < 0 ? "-Inf" : "Inf");
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
399 else
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
400 os << d;
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
401 }
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
402
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
403 void
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
404 octave_write_complex (std::ostream& os, const Complex& c)
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
405 {
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
406 os << "(";
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
407 octave_write_double (os, real (c));
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
408 os << ",";
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
409 octave_write_double (os, imag (c));
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
410 os << ")";
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
411 }
7d9bda865012 [project @ 2002-10-28 21:05:30 by jwe]
jwe
parents: 3970
diff changeset
412
7789
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
413
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
414
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
415
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
416
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
417
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
418
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
419
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
420
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
421
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
422
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
423
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
424
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
425
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
426
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
427
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
428
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
429
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
430
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
431
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
432
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
433
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
434 static inline float
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
435 read_float_inf_nan_na (std::istream& is, char c, char sign = '+')
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
436 {
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
437 float d = 0.0;
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
438
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
439 switch (c)
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
440 {
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
441 case 'i': case 'I':
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
442 {
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
443 c = is.get ();
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
444 if (c == 'n' || c == 'N')
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
445 {
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
446 c = is.get ();
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
447 if (c == 'f' || c == 'F')
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
448 d = sign == '-' ? -octave_Inf : octave_Inf;
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
449 else
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
450 is.putback (c);
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
451 }
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
452 else
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
453 is.putback (c);
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
454 }
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
455 break;
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
456
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
457 case 'n': case 'N':
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
458 {
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
459 c = is.get ();
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
460 if (c == 'a' || c == 'A')
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
461 {
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
462 c = is.get ();
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
463 if (c == 'n' || c == 'N')
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
464 d = octave_NaN;
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
465 else
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
466 {
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
467 is.putback (c);
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
468 d = octave_NA;
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
469 }
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
470 }
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
471 else
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
472 is.putback (c);
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
473 }
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
474 break;
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
475
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
476 default:
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
477 abort ();
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
478 }
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
479
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
480 return d;
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
481 }
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
482
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
483 float
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
484 octave_read_float (std::istream& is)
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
485 {
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
486 float d = 0.0;
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
487
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
488 char c1 = ' ';
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
489
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
490 while (isspace (c1))
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
491 c1 = is.get ();
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
492
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
493 switch (c1)
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
494 {
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
495 case '-':
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
496 {
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
497 char c2 = 0;
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
498 c2 = is.get ();
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
499 if (c2 == 'i' || c2 == 'I')
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
500 d = read_float_inf_nan_na (is, c2, c1);
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
501 else
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
502 {
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
503 is.putback (c2);
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
504 is.putback (c1);
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
505 is >> d;
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
506 }
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
507 }
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
508 break;
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
509
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
510 case '+':
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
511 {
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
512 char c2 = 0;
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
513 c2 = is.get ();
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
514 if (c2 == 'i' || c2 == 'I')
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
515 d = read_float_inf_nan_na (is, c2, c1);
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
516 else
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
517 {
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
518 is.putback (c2);
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
519 is.putback (c1);
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
520 is >> d;
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
521 }
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
522 }
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
523 break;
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
524
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
525 case 'i': case 'I':
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
526 case 'n': case 'N':
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
527 d = read_float_inf_nan_na (is, c1);
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
528 break;
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
529
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
530 default:
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
531 is.putback (c1);
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
532 is >> d;
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
533 }
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
534
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
535 return d;
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
536 }
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
537
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
538 FloatComplex
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
539 octave_read_float_complex (std::istream& is)
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
540 {
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
541 float re = 0.0, im = 0.0;
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
542
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
543 FloatComplex cx = 0.0;
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
544
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
545 char ch = ' ';
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
546
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
547 while (isspace (ch))
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
548 ch = is.get ();
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
549
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
550 if (ch == '(')
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
551 {
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
552 re = octave_read_float (is);
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
553 ch = is.get ();
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
554
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
555 if (ch == ',')
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
556 {
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
557 im = octave_read_float (is);
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
558 ch = is.get ();
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
559
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
560 if (ch == ')')
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
561 cx = FloatComplex (re, im);
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
562 else
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
563 is.setstate (std::ios::failbit);
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
564 }
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
565 else if (ch == ')')
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
566 cx = re;
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
567 else
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
568 is.setstate (std::ios::failbit);
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
569 }
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
570 else
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
571 {
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
572 is.putback (ch);
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
573 cx = octave_read_float (is);
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
574 }
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
575
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
576 return cx;
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
577
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
578 }
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
579
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
580 void
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
581 octave_write_float (std::ostream& os, float d)
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
582 {
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
583 if (lo_ieee_is_NA (d))
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
584 os << "NA";
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
585 else if (lo_ieee_isnan (d))
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
586 os << "NaN";
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
587 else if (lo_ieee_isinf (d))
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
588 os << (d < 0 ? "-Inf" : "Inf");
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
589 else
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
590 os << d;
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
591 }
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
592
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
593 void
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
594 octave_write_float_complex (std::ostream& os, const FloatComplex& c)
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
595 {
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
596 os << "(";
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
597 octave_write_float (os, real (c));
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
598 os << ",";
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
599 octave_write_float (os, imag (c));
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
600 os << ")";
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
601 }
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7048
diff changeset
602
1967
4cb6aaa0f2c7 [project @ 1996-02-17 02:54:24 by jwe]
jwe
parents:
diff changeset
603 /*
4cb6aaa0f2c7 [project @ 1996-02-17 02:54:24 by jwe]
jwe
parents:
diff changeset
604 ;;; Local Variables: ***
4cb6aaa0f2c7 [project @ 1996-02-17 02:54:24 by jwe]
jwe
parents:
diff changeset
605 ;;; mode: C++ ***
4cb6aaa0f2c7 [project @ 1996-02-17 02:54:24 by jwe]
jwe
parents:
diff changeset
606 ;;; End: ***
4cb6aaa0f2c7 [project @ 1996-02-17 02:54:24 by jwe]
jwe
parents:
diff changeset
607 */