pre><code class="language-txt">.Q.f[x;y]
</code></pre>
<p>Where</p>
<ul>
    <li><code>x</code> is an int atom</li>
    <li><code>y</code> is a numeric atom</li>
</ul>
<p>returns <code>y</code> as a string formatted as a float to <code>x</code> decimal places.</p>
<p>Because of the limits of precision in a double, for <code>y</code> above <code>1e13</code> or the limit set by <code>\P</code>,
    formats in scientific notation.</p>
<pre><code class="language-q">q)\P 0
q).Q.f[2;]each 9.996 34.3445 7817047037.90 781704703567.90 -.02 9.996 -0.0001
&quot;10.00&quot;
&quot;34.34&quot;
&quot;7817047037.90&quot;
&quot;781704703567.90&quot;
&quot;-0.02&quot;
&quot;10.00&quot;
&quot;-0.00&quot;
</code></pre>
<p>The <code>1e13</code> limit is dependent on <code>x</code>. The maximum then becomes <code>y*10 xexp x</code> and
    that value must be less than <code>1e17</code> – otherwise you'll see sci notation or overflow.</p>
<pre><code class="language-q">q)10 xlog 0Wj-1
18.964889726830812
</code></pre>