title: Undefined reference to 'qcos_' and '_g95_qcos_r16' with quad precision in G95
body: <p>I tried to make quad precision on FORTRAN[real(kind=16)], but I keep getting error</p>
  
  <pre><code>C:\User\User\AppData\Local\Temp/ccUMY6b.0:forcefunction.f95:(.text+0x437):
  undefined reference to 'qcos_'
  </code></pre>
  
  <p>I tried to change <code>qcos</code> to <code>cos</code> but,</p>
  
  <pre><code>C:\User\User\AppData\Local\Temp/ccM5CBUM.0:forcefunction.f95:(.text+0x2fd1):
  undefined reference to '_g95_qcos_r16'
  </code></pre>
  
  <p>Same problem for <code>sin</code>, <code>abs</code>, <code>acos</code>, <code>asin</code>, <code>sqrt</code></p>