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C----------------------------------------------------------------------
subroutine ftpdes(ounit,colnum,rownum,nelem,offset,status)
C write the descriptor values to a binary table. This is only
C used for column which have TFORMn = 'P', i.e., for variable
C length arrays.
C ounit i fortran unit number
C colnum i number of the column to write to
C rownum i number of the row to write
C nelem i input number of elements
C offset i input byte offset of the first element
C status i output error status
C
C written by Wm Pence, HEASARC/GSFC, Nov 1991
integer ounit,colnum,rownum,nelem,offset,status
C COMMON BLOCK DEFINITIONS:--------------------------------------------
integer nf,nb,ne
parameter (nb = 20)
parameter (nf = 3000)
parameter (ne = 200)
integer bufnum,chdu,hdutyp,maxhdu,hdstrt,hdend,nxthdr,dtstrt
integer nxtfld
logical wrmode
common/ft0001/bufnum(199),chdu(nb),hdutyp(nb),maxhdu(nb),
& wrmode(nb),hdstrt(nb,ne),hdend(nb),nxthdr(nb),dtstrt(nb),nxtfld
integer tfield,tstart,tbcol,rowlen,tdtype,trept,tnull,scount
integer theap,nxheap
double precision tscale,tzero
common/ft0002/tfield(nb),tstart(nb),tbcol(nf),rowlen(nb),
& tdtype(nf),trept(nf),tscale(nf),tzero(nf),tnull(nf),scount(nb)
& ,theap(nb),nxheap(nb)
C END OF COMMON BLOCK DEFINITIONS-----------------------------------
integer ibuff,bstart,iray(2)
if (status .gt. 0)return
if (rownum .lt. 1)then
C error: illegal row number
status=307
return
end if
ibuff=bufnum(ounit)
C check that this is really a 'P' type column
if (tdtype(colnum+tstart(ibuff)) .ge. 0)then
status=317
return
end if
C move to the specified column and row:
bstart=dtstrt(ibuff)+(rownum-1)*rowlen(ibuff)
& +tbcol(colnum+tstart(ibuff))
call ftmbyt(ounit,bstart,.true.,status)
C now write the number of elements and the offset to the table:
iray(1)=nelem
iray(2)=offset
call ftpi4b(ounit,2,0,iray,status)
end
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