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<?xml version="1.0" encoding="UTF-8"?>
<refentry version="5.0-subset Scilab" xml:id="dot" xml:lang="en"
xmlns="http://docbook.org/ns/docbook"
xmlns:xlink="http://www.w3.org/1999/xlink"
xmlns:svg="http://www.w3.org/2000/svg"
xmlns:ns5="http://www.w3.org/1999/xhtml"
xmlns:mml="http://www.w3.org/1998/Math/MathML"
xmlns:db="http://docbook.org/ns/docbook">
<info>
<pubdate>$LastChangedDate$</pubdate>
</info>
<refnamediv>
<refname>dot</refname>
<refpurpose>(.) symbol</refpurpose>
</refnamediv>
<refsynopsisdiv>
<title>Calling Sequence</title>
<synopsis>123.33
a.*b
[123,..
456]</synopsis>
</refsynopsisdiv>
<refsection>
<title>Description</title>
<variablelist>
<varlistentry>
<term>.</term>
<listitem>
<para>Dot is used to mark decimal point for numbers : 3.25 and
0.001</para>
</listitem>
</varlistentry>
<varlistentry>
<term>.<op></term>
<listitem>
<para>used in conjunction with other operator symbols (<literal>* /
\ ^ '</literal>) to form other operators. Element-by-element
multiplicative operations are obtained using <literal> .* , .^ , ./
, .\</literal> or <literal>.'</literal>. For example, C = A ./ B is
the matrix with elements c(i,j) = a(i,j)/b(i,j). Kronecker product
is noted .*. . Note that when dot follows a number it is alway prt
of the number so 2.*x is evaluated as 2.0*x and 2 .*x is evaluated
as (2).*x</para>
</listitem>
</varlistentry>
<varlistentry>
<term>..</term>
<listitem>
<para>Continuation mark. Two or more decimal points at the end of a
line (or followed by a comment) causes the following line to be a
continuation.</para>
<para>Continuation lines are handled by a preprocessor which builds
a long logical line from a sequence of continuation lines. So the
continuation marks can be used to cut a line at any point.</para>
<para>The following function foo:</para>
<programlisting role = ""><![CDATA[
function foo
a=1
disp(a),..
disp('ok')
endfunction
]]></programlisting>
<para>is equivalent to:</para>
<programlisting role = ""><![CDATA[
function foo
a=1
disp(a),disp('ok')
endfunction
]]></programlisting>
<para>The logical line formed by physical line 3 and physical line 4
is built as if it was entirely written in the physical line 4 while
physical line 3 would be empty. This is done this way because
continuation marks can be put anywhere even inside an
expression.</para>
</listitem>
</varlistentry>
</variablelist>
</refsection>
<refsection>
<title>Examples</title>
<programlisting role="example"><![CDATA[
//decimal point
1.345
//used as part of an operator
x=[1 2 3];x.^2 .*x // a space is required between 2 and dot
// used to enter continuation lines
T=[123,..//first element
456] //second one
a="here I start a very long string... //but I'm not in the mood of continuing
- and here I go on"
y=12..
45
]]></programlisting>
</refsection>
<refsection>
<title>See Also</title>
<simplelist type="inline">
<member><link linkend="star">star</link></member>
<member><link linkend="hat">hat</link></member>
<member><link linkend="slash">slash</link></member>
<member><link linkend="backslash">backslash</link></member>
</simplelist>
</refsection>
</refentry>
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