- complex numbers are aligned for matrices
- numbers (IEEE 754 double) are not rounded
* importgui function has been added to easily interface csvRead
+* function calls with zero output arguments can be detected with `argn`
Installation
* `CURVE_c` settings did not always display a window.
* Exporting all layers from a diagram will generate one unique file per layer.
-API modification
+API/ABI modification
----------------
+* Functions could return zeros arguments, the following gateway functions have been updated:
+ - on APIv5 C `CheckOutputArgument(ctx, min, max)` the `min` argument should be set to `0` if needed.
+ - on APIv5 C `getNbOutputArgument(ctx)` the return value could be `0`
+ - on APIv6 C++ the `_iRetCount` argument value could be `0`.
+* On APIv6 C++, a virtual method has been added on internal types which break the ABI. Toolboxes need to be recompiled.
Obsolete functions or features
------------------------------
<varlistentry>
<term>lhs</term>
<listitem>
- <para>Number of expected Left-Hand-Side output arguments. Is set to 1 when no output
- argument is expected.
+ <para>Number of expected Left-Hand-Side output arguments assigned at the function call.
</para>
</listitem>
</varlistentry>
<title>Description</title>
<para>
This function is used inside a function definition.
- It gives the number of actual inputs arguments (<varname>rhs</varname>)
- and output arguments (<varname>lhs</varname>) passed to the function when the function is
- called. It is usually used in function definitions to deal with
- optional arguments.
+ It gives the number of actual inputs arguments (<varname>rhs</varname>) and output arguments (<varname>lhs</varname>) passed to the function when the function is called. It is usually used in function definitions to deal with optional arguments.
</para>
<warning>
Testing the existence of a named input argument with <literal>isdef(..,"l")</literal>
is more robust that with <literal>argn()</literal>. Please see examples.
</warning>
+ <para>
+ When the caller function has either no output argument or only <varname>varargout</varname>, the (<varname>lhs</varname>) is set to <code>0</code>. Otherwise, the number of expected arguments is set.
+ </para>
</refsection>
<refsection>
<title>Examples</title>
out1 = test();
[o1, o2] = test(%pi);
]]></programlisting>
- <screen><![CDATA[
---> test();
- 1. 0.
-
---> test(4.321);
- 1. 1.
-
---> test(3, -1);
- 1. 2.
-
---> test(3, -1, a=0);
-Wrong number of input arguments.
-
---> test(3, -1, c=8);
-Wrong number of input arguments.
-
---> out1 = test();
- 1. 0.
-
---> [o1, o2] = test(%pi);
- 2. 1.
-]]></screen>
<para/>
<para>With varargin and varargout:</para>
<programlisting role="example"><![CDATA[
-function [res, varargout] = test(a, varargin)
+function [varargout] = disp_argn(varargin)
+ varargout = list("abc",%i);
+ [lhs, rhs] = argn()
+ disp([lhs rhs]) // <<<<<<<<<<<
+endfunction
+
+function [res, varargout] = disp_argn_with_args(a, varargin)
res = "abc";
varargout = list(%i);
[lhs, rhs] = argn()
disp([lhs rhs]) // <<<<<<<<<<<
endfunction
-test();
-test(4.321);
-test(3, -1);
-test(3, -1, a=0);
-test(3, -1, 8);
-
-out1 = test();
-[o1, o2] = test(%pi);
-[o1, o2, o3] = test(%pi);
+// varargin
+disp_argn(1);
+disp_argn_with_args(1);
+disp_argn(1, 2);
+disp_argn_with_args(1, 2);
+disp_argn(1, 2, 3);
+disp_argn_with_args(1, 2, 3);
+
+// varargout
+out1 = disp_argn();
+out1 = disp_argn_with_args();
+[o1, o2] = disp_argn();
+[o1, o2] = disp_argn_with_args();
+[o1, o2, o3] = disp_argn();
+[o1, o2, o3] = disp_argn_with_args();
]]></programlisting>
- <screen><![CDATA[
---> test();
- 1. 0.
-
---> test(4.321);
- 1. 1.
-
---> test(3, -1);
- 1. 2.
-
---> test(3, -1, a=0);
- 1. 3.
-
---> test(3, -1, 8);
- 1. 3.
-
---> out1 = test();
- 1. 0.
-
---> [o1, o2] = test(%pi);
- 2. 1.
-
---> [o1, o2, o3] = test(%pi);
- 3. 1.
-]]></screen>
<para/>
<para>Robust test of the existence of input arguments:</para>
<programlisting role="example"><![CDATA[
test(-1, a=2, c=3)
test(b=-1, a=2, c=3)
]]></programlisting>
- <screen><![CDATA[
---> test()
- ans =
-
---> test(4.321)
- ans =
- a passed.
-
---> test(4.321, %z)
- ans =
- a passed. b passed.
-
---> test(b=3)
- ans =
- b passed.
-
---> test(c=3)
- ans =
- c passed.
-
---> test(-1, c=3)
- ans =
- a passed. c passed.
-
---> test(-1, a=2, c=3) // argins in varargin are/become always anonymous
- ans =
- a passed.
-
---> test(b=-1, a=2, c=3)
- ans =
- a passed. b passed.
-]]></screen>
<para/>
<para>Another usage:</para>
<programlisting role="example"><![CDATA[
</member>
<member>
<link linkend="varargout">varargout</link>
- </member>
+ </member>
<member>
<link linkend="macrovar">macrovar</link>
</member>
</member>
</simplelist>
</refsection>
+ <refsection>
+ <title>History</title>
+ <revhistory><revision><revnumber>6.1.0</revnumber><revremark>The <code>lhs</code> argument is set to zero when the caller function has no output assignement.</revremark></revision></revhistory>
+ </refsection>
</refentry>
<term>lhs</term>
<listitem>
<para>
- Nombre d'arguments de sortie attendus. Vaut 1 (au lieu de 0) si la fonction
- a été appelée sans argument de sortie.
+ Nombre d'arguments de sortie attendus. Vaut <code>0</code> si la fonction a été appelée sans argument de sortie.
</para>
</listitem>
</varlistentry>
out1 = test();
[o1, o2] = test(%pi);
]]></programlisting>
- <screen><![CDATA[
---> test();
- 1. 0.
-
---> test(4.321);
- 1. 1.
-
---> test(3, -1);
- 1. 2.
-
---> test(3, -1, a=0);
-Wrong number of input arguments.
-
---> test(3, -1, c=8);
-Wrong number of input arguments.
-
---> out1 = test();
- 1. 0.
-
---> [o1, o2] = test(%pi);
- 2. 1.
-]]></screen>
<para/>
<para>Avec varargin ou/et varargout:</para>
<programlisting role="example"><![CDATA[
-function [res, varargout] = test(a, varargin)
+function [varargout] = disp_argn(varargin)
+ varargout = list("abc",%i);
+ [lhs, rhs] = argn()
+ disp([lhs rhs]) // <<<<<<<<<<<
+endfunction
+
+function [res, varargout] = disp_argn_with_args(a, varargin)
res = "abc";
varargout = list(%i);
[lhs, rhs] = argn()
disp([lhs rhs]) // <<<<<<<<<<<
endfunction
-test();
-test(4.321);
-test(3, -1);
-test(3, -1, a=0);
-test(3, -1, 8);
-
-out1 = test();
-[o1, o2] = test(%pi);
-[o1, o2, o3] = test(%pi);
+// varargin
+disp_argn(1);
+disp_argn_with_args(1);
+disp_argn(1, 2);
+disp_argn_with_args(1, 2);
+disp_argn(1, 2, 3);
+disp_argn_with_args(1, 2, 3);
+
+// varargout
+out1 = disp_argn();
+out1 = disp_argn_with_args();
+[o1, o2] = disp_argn();
+[o1, o2] = disp_argn_with_args();
+[o1, o2, o3] = disp_argn();
+[o1, o2, o3] = disp_argn_with_args();
]]></programlisting>
- <screen><![CDATA[
---> test();
- 1. 0.
-
---> test(4.321);
- 1. 1.
-
---> test(3, -1);
- 1. 2.
-
---> test(3, -1, a=0);
- 1. 3.
-
---> test(3, -1, 8);
- 1. 3.
-
---> out1 = test();
- 1. 0.
-
---> [o1, o2] = test(%pi);
- 2. 1.
-
---> [o1, o2, o3] = test(%pi);
- 3. 1.
-]]></screen>
<para/>
<para>Test robuste de l'existence d'un argument d'entrée:</para>
<programlisting role="example"><![CDATA[
test(-1, a=2, c=3)
test(b=-1, a=2, c=3)
]]></programlisting>
- <screen><![CDATA[
---> test()
- ans =
-
---> test(4.321)
- ans =
- a passed.
-
---> test(4.321, %z)
- ans =
- a passed. b passed.
-
---> test(b=3)
- ans =
- b passed.
-
---> test(c=3)
- ans =
- c passed.
-
---> test(-1, c=3)
- ans =
- a passed. c passed.
-
---> test(-1, a=2, c=3) // Les arguments passés via varargin sont toujours anonymes
- ans =
- a passed.
-
---> test(b=-1, a=2, c=3)
- ans =
- a passed. b passed.
-]]></screen>
<para/>
<para>Autre usage fréquent:</para>
<programlisting role="example"><
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