ul></div><p>The source of ZGESDD can be found at <a href="http://www.netlib.org/lapack/explore-html/d8/d54/zgesdd_8f_source.html">http://www.netlib.org/lapack/explore-html/d8/d54/zgesdd_8f_source.html</a>. ZGESDD calls a subroutine:</p><div><ul><li>DBDSDC computes the singular value decomposition (SVD) of a real N-by-N (upper or lower) bidiagonal matrix B = U * S * VT, using a divide and conquer method, where S is a diagonal matrix with non-negative diagonal elements (the singular values of B), and U and VT