rray(v,27)</code> is a size 27 array consisting of 27 copies of
the vector <code>v</code>.</p>
<pre><code> vector[5] v;
 vector[5] a[3];
 
 a = rep_array(v,3);  // fill a with copies of v
 a[2,4] = 9.0;        // v[4], a[1,4], a[2,4] unchanged</code></pre>
<p>If the type T of x is itself an array type, then the result will be an
array with one, two, or three added dimensions, depending on which of
the <code>rep_array</code> functions is called. For instance, consider the
following legal code snippet.</p>
<p