updated the docs

--HG--
extra : convert_revision : svn%3Afdd8eb12-d10e-0410-9acb-85c331704f74/trunk%403076

docs/docs/metaprogramming.xml

@@ -34,6 +34,7 @@
          <item>is_const_type</item>
          <item>is_same_type</item>
          <item>is_convertible</item>
+         <item>is_complex</item>
          <item>is_function</item>
          <item>is_signed_type</item>
          <item>is_unsigned_type</item>
@@ -191,6 +192,19 @@
          
       </component>
       
+   <!-- ************************************************************************* -->
+
+      <component>
+         <name>is_complex</name>
+         <file>dlib/matrix.h</file>
+         <spec_file link="true">dlib/matrix/matrix_utilities.h</spec_file>
+         <description>
+            This is a template that can be used to determine if a type is a
+            specialization of std::complex.
+         </description>
+         
+      </component>
+      
    <!-- ************************************************************************* -->
 
       <component>

docs/docs/term_index.xml

@@ -712,6 +712,7 @@
          <term file="metaprogramming.html" name="is_const_type"/>
          <term file="metaprogramming.html" name="is_same_type"/>
          <term file="metaprogramming.html" name="is_convertible"/>
+         <term file="metaprogramming.html" name="is_complex"/>
          <term file="metaprogramming.html" name="is_function"/>
          <term file="metaprogramming.html" name="wrap_function"/>
          <term file="metaprogramming.html" name="is_signed_type"/>