LAPACK 3.12.0
LAPACK: Linear Algebra PACKage

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Functions/Subroutines  
subroutine  ctgex2 (wantq, wantz, n, a, lda, b, ldb, q, ldq, z, ldz, j1, info) 
CTGEX2 swaps adjacent diagonal blocks in an upper (quasi) triangular matrix pair by an unitary equivalence transformation.  