## 12/07/1999 ##########################################################
#                                                                      #
#  patches.txt lists bugs fixes and/or code modifications.             #
#                                                                      #
########################################################################

Nov 1999: 

. manual.ps: 15+LISTOR replaced by 17+LISTOR and 4+LRSTOR replaced by
             5+LRSTOR; 150 replaced by 180 as default for k1; driver
             models updated.
. blzdrd.f : 15+LISTOR replaced by 17+LISTOR, 4+LRSTOR replaced by
             5+LRSTOR, and min(N,150) replaced by min(N,180) in the
             leading comments; modification in logical flags for 
             algorithm control in reverse communication strategy;
             one argument removed in the call to blzset.
. blzeig.f : modification in logical flags for algorithm control in
             reverse communication strategy.
. blzext.f : modification in logical flags for algorithm control in
             reverse communication strategy.
. blzrbx.f : modification in logical flags for algorithm control in
             reverse communication strategy.
. blzset.f : temporary arrays introduced to avoid accessing ISTOR and
             RSTOR when calling blzdrd/s in workspace query mode;
             condition for workspace query modified; one argument 
             removed; call to lzerrs added.
. blzstp.f : condition added in logical flag ENDON to abort execution
             when an indefinite matrix B is detected; argument added
             in the call to subroutine lzstp5.
. datchk.f : condition for workspace query modified.
. datset.f : condition for workspace query modified; one argument
             removed.
. lzchek.f : condition added in logical flag EIGON.
. lzhist.f : modification in the test with NONEWS (4 changed to 3).
. lzmmry.f : condition for workspace query modified.
. lzrang.f : modification in the initial bounds for the generalized
             engenvalue problem in buckling mode.
. lzstp5.f : argument added.
. ssbnds.f : modification in the check for an empty computational
             interval.
. ssneed.f : new case for changing sigma introduced.
. ssorgn.f : modification in the shift selection.
. ssspec.f : modification in the shift selection.
. tbconv.f : more conservative threshold for convergence in single
             precision arithmetic.

Apr 2001:

. blzstr.f : modification in reverse communication flag (LFLAG) for
             restarting in standard mode.
. lzioop.f : modification in error flags (IOERR) and in test for
             opening files.

Jun 2001:

. rfactr.f : BMAXN and BMINN set to EPS when NPIVT=.true. to avoid 
             potential arithmetic exception afterwards.
. lzstp2.f : JLP1 redefined as MAX(1,JL) to avoid JL+1 > JLMAX
. lzstp3.f : JLP1 redefined as MAX(1,JL) to avoid JL+1 > JLMAX
             

end of patches.txt #####################################################
