--- rpl/lapack/lapack/dgelq.f 2018/05/29 07:17:51 1.3 +++ rpl/lapack/lapack/dgelq.f 2020/05/21 21:45:56 1.4 @@ -1,3 +1,4 @@ +*> \brief \b DGELQ * * Definition: * =========== @@ -17,7 +18,17 @@ * ============= *> *> \verbatim -*> DGELQ computes a LQ factorization of an M-by-N matrix A. +*> +*> DGELQ computes an LQ factorization of a real M-by-N matrix A: +*> +*> A = ( L 0 ) * Q +*> +*> where: +*> +*> Q is a N-by-N orthogonal matrix; +*> L is an lower-triangular M-by-M matrix; +*> 0 is a M-by-(N-M) zero matrix, if M < N. +*> *> \endverbatim * * Arguments: @@ -138,7 +149,7 @@ *> \verbatim *> *> These details are particular for this LAPACK implementation. Users should not -*> take them for granted. These details may change in the future, and are unlikely not +*> take them for granted. These details may change in the future, and are not likely *> true for another LAPACK implementation. These details are relevant if one wants *> to try to understand the code. They are not part of the interface. *> @@ -159,10 +170,10 @@ SUBROUTINE DGELQ( M, N, A, LDA, T, TSIZE, WORK, LWORK, $ INFO ) * -* -- LAPACK computational routine (version 3.7.0) -- +* -- LAPACK computational routine (version 3.9.0) -- * -- LAPACK is a software package provided by Univ. of Tennessee, -- * -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd. -- -* December 2016 +* November 2019 * * .. Scalar Arguments .. INTEGER INFO, LDA, M, N, TSIZE, LWORK