<mtd><mn>19.17</mn><mo>+</mo><mn>21.33</mn><mi>i</mi></mtd>
</mtr>
</mtable></mfenced>
<mtext>.</mtext>
</math></td><td class="formula2">&#xa0;</td></tr></table></div>

Here <math><mi>A</mi></math>&#xa0;is treated as a lower triangular band matrix with two subdiagonals.</div>

<hr>
<ul>
<li><a href="https://github.com/numericalalgorithmsgroup/LAPACK_Examples/blob/master/examples/source/ztbtrs_example.f90">f90 source code</a></li>
<li><a href="https://github.com/numericalalgorithmsgroup/LAPACK_Examples/blob/