From 671b924c8c06f2d328808c4f0aee2b660019dbda Mon Sep 17 00:00:00 2001
From: Jiri Pittner <jiri@pittnerovi.com>
Date: Mon, 15 Dec 2025 14:36:16 +0100
Subject: [PATCH] lanczos: little bug fix

---
 lanczos.h | 5 ++---
 t.cc      | 1 -
 2 files changed, 2 insertions(+), 4 deletions(-)

diff --git a/lanczos.h b/lanczos.h
index e13fb5b..c812352 100644
--- a/lanczos.h
+++ b/lanczos.h
@@ -25,9 +25,8 @@
 #include "auxstorage.h"
 
 //TODO:
-//@@@convergece test by residual norm rather than by energy difference
 //@@@implement restart when Krylov space is exceeded
-//@@@implement inital guess of more than 1 vector (also in davidson)
+//@@@implement inital guess of more than 1 vector (also in davidson) and block version of the methods
 
 namespace LA {
 
@@ -153,7 +152,7 @@ for(j=1; j<maxkrylov;++j)
 
        	  if(verbose)
       	    {
-	    for(int iroot=0; iroot<=std::min(krylovsize,nroots-1); ++iroot)
+	    for(int iroot=0; iroot<std::min(krylovsize,nroots); ++iroot)
        	         {
        	         std::cout <<"Lanczos: iter="<<it <<" dim="<<krylovsize<<" root="<<iroot<<" eigenvalue="<<r[iroot]<<"\n";
        	         }
diff --git a/t.cc b/t.cc
index ef942a2..afbfa31 100644
--- a/t.cc
+++ b/t.cc
@@ -4536,7 +4536,6 @@ for(int i=0; i<m; ++i)
 
 if(1)
 {
-//n must not be too small
 int n,m;
 bool which;
 cin>>n >>m>>which ;