LAPACK  3.6.1
LAPACK: Linear Algebra PACKage
zlahr2.f File Reference

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subroutine zlahr2 (N, K, NB, A, LDA, TAU, T, LDT, Y, LDY)
 ZLAHR2 reduces the specified number of first columns of a general rectangular matrix A so that elements below the specified subdiagonal are zero, and returns auxiliary matrices which are needed to apply the transformation to the unreduced part of A. More...