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Add new function unsetenv from gnulib to Octave. * NEWS: Announce new function. * bootstrap.conf: Pull unsetenv from gnulib. * sysdep.cc (Fgetenv): Add seealso references to setenv, unsetenv. * sysdep.cc (Fsetenv): Rename from Fputenv. Change DEFALIAS to be from setenv to putenv. Redo docstring. Use unsetenv in BIST tests to get rid of temporary environment variable. * sysdep.cc (Funsetenv): New function. * system.txi: Add unsetenv to manual.
author Rik <rik@octave.org>
date Sat, 27 Sep 2014 12:26:57 -0700
parents ba167badef9f
children d70b1cec7743
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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18109
2217bc116aa9 maint: Dummy merge with gui-release, ignoring all recent backout merges
Jordi Gutiérrez Hermoso <jordigh@octave.org>
parents: 18107
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1 Summary of important user-visible changes for version 4.2:
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2 ---------------------------------------------------------
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3
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4 ** A new syntax for object oriented programming termed classdef has been
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5 introduced. See the manual for more extensive documentation of the
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6 classdef interface.
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7
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8 New keywords:
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9
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10 classdef endclassdef
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11 enumeration endenumeration
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12 events endevents
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13 methods endmethods
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14 properties endproperties
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15
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16 ** New classes in Octave 4.2:
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17
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18 inputParser
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19
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20 ** Interpolation function changes for Matlab compatibility
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21
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22 The interpolation method 'cubic' is now equivalent to 'pchip'
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23 for interp1, interp2, and interp3. Previously, 'cubic' was equivalent
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24 to 'spline' for interp2. This may produce different results as 'spline'
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25 has continuous 1st and 2nd derivatives while 'pchip' only has a continuous
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26 1st derivative.
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27
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28 ** The delaunay function has been extended to accept 3-D inputs for
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29 Matlab compatibility. The delaunay function no longer plots the
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30 triangulation if no output argument is requested, instead, the
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31 triangulation is always returned. The delaunay3 function which
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32 handles 3-D inputs has been deprecated in favor of delaunay.
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33
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34 ** Integer formats used in the printf family of functions now work for
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35 64-bit integers and are more compatible with Matlab when printing
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36 non-integer values. Now instead of truncating, Octave will switch
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37 the effective format to '%g' in the following circumstances:
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38
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39 * the value of an integer type (int8, uint32, etc.) value exceeds
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40 the maximum for the format specifier. For '%d', the limit is
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41 intmax ('int64') and for '%u' it is intmax ('uint64').
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42
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43 * round(x) != x or the value is outside the range allowed by the
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44 integer format specifier.
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45
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46 There is still one difference: Matlab switches to '%e' and Octave
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47 is currently switching to '%g'.
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48
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49 ** Z-order stacking issues with patches, grid lines, and line object
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50 plot markers for on screen display and printing have all been resolved.
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51 For 2-D plots the axis grid lines can be placed on top of the plot
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52 with set (gca, "layer", "top").
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53
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54 ** The patch graphic object has been overhauled. It now produces visual
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55 results equivalent to Matlab even for esoteric combinations of
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56 faces/vertices/cdata.
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57
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58 ** The polar() plot function now draws a circular theta axis and
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59 radial rho axis rather than using a rectangular x/y axis.
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60
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61 ** linkprop has been completely re-coded for performance and Matlab
e68788478aa1 linkprop.m: Overhaul function for performance and Matlab compatibility.
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62 compatibility. It now returns a linkprop object which must be stored
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63 in a variable for as long as the graphic objects should remain linked.
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64 To unlink properties use 'clear hlink' where hlink is the variable
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65 containing the linkprop object.
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66
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67 ** isprime has been extended to operate on negative and complex inputs.
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68
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69 ** The following functions now support N-dimensional arrays:
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70
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71 fliplr flipud rot90
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72
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73 ** The new warning ID "Octave:data-file-in-path" replaces the three
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74 previous separate warning IDs "Octave:fopen-file-in-path",
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75 "Octave:load-file-in-path", and "Octave:md5sum-file-in-path".
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76
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77 ** Other new functions added in 4.2:
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78
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79 bandwidth
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80 dir_in_loadpath
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81 flip
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82 hgload
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83 hgsave
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84 ichol
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85 ilu
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86 isbanded
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87 isdiag
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88 istril
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89 istriu
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90 javachk
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91 linkaxes
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92 lscov
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93 numfields
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94 rotate
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95 sylvester
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96 unsetenv
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97 zoom
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98
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99 ** inline() scheduled for eventual deprecation by Matlab
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100
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101 Functions created through the use of inline are scheduled for deprecation
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102 by Matlab. When this occurs Octave will continue to support inline
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103 functions for an indeterminate amount of time before also removing support.
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104 All new code should use anonymous functions in place of inline functions.
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105
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106 ** Deprecated functions.
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107
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108 The following functions have been deprecated in Octave 4.2 and will
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109 be removed from Octave 4.6 (or whatever version is the second major
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110 release after 4.2):
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111
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112 Function | Replacement
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113 -------------------|------------------
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114 bicubic | interp2
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115 delaunay3 | delaunay
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116 find_dir_in_path | dir_in_loadpath
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117 finite | isfinite
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118 fmod | rem
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119 fnmatch | glob or regexp
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120 luinc | ilu or ichol
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121 nfields | numfields
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122 syl | sylvester
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123 usage | print_usage
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124
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125 The following functions were deprecated in Octave 3.8 and have been
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126 removed from Octave 4.2.
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127
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128 default_save_options java_new
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129 gen_doc_cache java_unsigned_conversion
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130 interp1q javafields
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131 isequalwithequalnans javamethods
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132 java_convert_matrix re_read_readline_init_file
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133 java_debug read_readline_init_file
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134 java_invoke saving_history
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135
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136 The following keywords were deprecated in Octave 3.8 and have been
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137 removed from Octave 4.2
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138
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139 static
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140
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141 The following configuration variables were deprecated in Octave 3.8
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142 and have been removed from Octave 4.2
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143
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144 CC_VERSION (now GCC_VERSION)
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145 CXX_VERSION (now GXX_VERSION)
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146
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147 The internal class <Octave_map> was deprecated in Octave 3.8 and has
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148 been removed from Octave 4.2. Replacement classes are
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149 <octave_map> (struct array) or <octave_scalar_map> for a single structure.
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150
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151 Summary of important user-visible changes for version 4.0:
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152 ---------------------------------------------------------
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153
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154 ** For compatibility with Matlab, the "backtrace" warning option is now
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155 enabled by default.
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156
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157 ** The preference
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158
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159 do_braindead_shortcircuit_evaluation
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160
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161 is now enabled by default.
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162
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163 ** The preference
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164
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165 allow_noninteger_range_as_index
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166
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167 is now enabled by default and the warning ID
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168
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169 Octave:noninteger-range-as-index
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170
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171 is now set to "on" by default instead of "error" by default and "on"
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172 for --traditional.
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173
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174 ** polyeig now returns a row vector of eigenvalues rather than a matrix
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175 with the eigenvalues on the diagonal. This change was made for Matlab
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176 compatibility.
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177
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178 ** Other new functions added in 4.0.0:
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179
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180 validateattributes
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181
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182 ** Deprecated functions.
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183
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184 The following functions were deprecated in Octave 3.6 and have been
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185 removed from Octave 4.0.
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186
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187 cut polyderiv
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188 cor shell_cmd
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189 corrcoef studentize
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190 __error_text__ sylvester_matrix
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191 error_text
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192
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193 The following functions have been deprecated in Octave 4.0 and will
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194 be removed from Octave 4.4 (or whatever version is the second major
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195 release after 4.0):
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196
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197 allow_noninteger_range_as_index
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198 do_braindead_shortcircuit_evaluation
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199
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200 The internal function atan2 of the sparse matrix class has been deprecated
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201 in Octave 4.0 and will be removed from Octave 4.4 (or whatever version is
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202 the second major release after 4.0). Use the Fatan2 function with sparse
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203 inputs as a replacement.
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204
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205 ---------------------------------------------------------
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206
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207 See NEWS.3 for old news.