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subroutine blktit(lunit,k1,k2,io)
c!purpose
c generates and outputs a matrix bloc title line of the form :
c <empty line>
c column k1 to k2
c <empty line>
c!
integer k1,k2,io
c
character*4 fmt2
character*70 fmt1,cw
c
c number of digit necessary to represent k2
lft=int(log10(dble(k2)+0.4))+1
write(fmt2,'(''i'',i2)') lft
call basout(io,lunit,' ')
if(io.eq.-1) return
if(k1.eq.k2) then
fmt1='('' column '','//fmt2//')'
write(cw(1:16+lft),fmt1) k1
call basout(io,lunit,cw(1:16+lft))
else
fmt1='('' column '','//fmt2//','' to '','//fmt2//')'
write(cw(1:(20+2*lft)),fmt1) k1,k2
call basout(io,lunit,cw(1:(20+2*lft)))
endif
if (io.eq.-1) return
call basout(io,lunit,' ')
if (io.eq.-1) return
end
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