555</span>)     <span class="hljs-comment">// 1000</span>
f1(<span class="hljs-number">1000000.5555</span>)  <span class="hljs-comment">// 1000000</span>
f1(<span class="hljs-number">1200000.5555</span>)  <span class="hljs-comment">// 1200000</span>

<span class="hljs-comment">// create a si formatter</span>
f2 = hx.format.si(<span class="hljs-number">3</span>)
f2(<span class="hljs-number">9.9999</span>)           <span class="hljs-comment">// 10</span>
f2(<span class="hljs-number">1.1111</span>)           