From 2e3389623f8a58ae48e56ccec8c00bb9a8174388 Mon Sep 17 00:00:00 2001 From: langou Date: Mon, 9 Feb 2009 22:08:05 +0000 Subject: --- SRC/zlahr2.f | 13 ++++++++++--- 1 file changed, 10 insertions(+), 3 deletions(-) (limited to 'SRC/zlahr2.f') diff --git a/SRC/zlahr2.f b/SRC/zlahr2.f index 8822ed69..ba56ed77 100644 --- a/SRC/zlahr2.f +++ b/SRC/zlahr2.f @@ -100,11 +100,18 @@ * modified element of the upper Hessenberg matrix H, and vi denotes an * element of the vector defining H(i). * -* This file is a slight modification of LAPACK-3.0's ZLAHRD +* This subroutine is a slight modification of LAPACK-3.0's DLAHRD * incorporating improvements proposed by Quintana-Orti and Van de * Gejin. Note that the entries of A(1:K,2:NB) differ from those -* returned by the original LAPACK routine. This function is -* not backward compatible with LAPACK3.0. +* returned by the original LAPACK-3.0's DLAHRD routine. (This +* subroutine is not backward compatible with LAPACK-3.0's DLAHRD.) +* +* References +* ========== +* +* Gregorio Quintana-Orti and Robert van de Geijn, "Improving the +* performance of reduction to Hessenberg form," ACM Transactions on +* Mathematical Software, 32(2):180-194, June 2006. * * ===================================================================== * -- cgit v1.2.3