LAPACK 3.12.0
LAPACK: Linear Algebra PACKage

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Functions/Subroutines  
subroutine  zgeqp3rk (m, n, nrhs, kmax, abstol, reltol, a, lda, k, maxc2nrmk, relmaxc2nrmk, jpiv, tau, work, lwork, rwork, iwork, info) 
ZGEQP3RK computes a truncated Householder QR factorization with column pivoting of a complex mbyn matrix A by using Level 3 BLAS and overwrites mbynrhs matrix B with Q**H * B.  