# clahr2.f - Man Page

## Synopsis

### Functions/Subroutines

subroutine **clahr2** (**N**, K, NB, A, **LDA**, TAU, T, LDT, Y, LDY)**CLAHR2** 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.

## Author

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## Info

Mon Jun 28 2021 Version 3.10.0 LAPACK