1 files changed, 94 insertions, 0 deletions
diff --git a/pkg/tbtables/fitsio/ftpdfl.f b/pkg/tbtables/fitsio/ftpdfl.f
new file mode 100644
index 00000000..33d7eeec
--- /dev/null
+++ b/pkg/tbtables/fitsio/ftpdfl.f
@@ -0,0 +1,94 @@
+C----------------------------------------------------------------------
+        subroutine ftpdfl(iunit,status)
+
+C       Write the Data Unit Fill values if they are not already correct
+C       Fill the data unit with zeros or blanks depending on the type of HDU
+C       from the end of the data to the end of the current FITS 2880 byte block
+
+C       iunit   i  fortran unit number
+C       status  i  output error status
+C
+C       written by Wm Pence, HEASARC/GSFC, June, 1994
+
+        integer iunit,status
+
+C       COMMON BLOCK DEFINITIONS:--------------------------------------------
+        integer nf,nb,ne
+        parameter (nf = 3000)
+        parameter (nb = 20)
+        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)
+        character*1 chbuff(2880),chfill,xdummy(2879)
+        common/ftheap/chbuff,chfill,xdummy
+C       END OF COMMON BLOCK DEFINITIONS-----------------------------------
+
+        integer ibuff,filpos,nfill,i,tstat
+
+        if (status .gt. 0)return
+
+        ibuff=bufnum(iunit)
+
+C       check if the data unit is null
+
+        if (theap(ibuff) .eq. 0)return
+
+        filpos=dtstrt(ibuff)+theap(ibuff)+scount(ibuff)
+        nfill=(filpos+2879)/2880*2880-filpos
+
+C       return if there are no fill bytes 
+        if (nfill .eq. 0)return
+
+C       set the correct fill value to be checked
+        if (hdutyp(ibuff) .eq. 1)then
+C              this is an ASCII table; should be filled with blanks
+               chfill=char(32)
+        else
+               chfill=char(0)
+        end if
+
+C       move to the beginning of the fill bytes and read them
+        tstat=status
+        call ftmbyt(iunit,filpos,.true.,status)
+        call ftgcbf(iunit,0,nfill,chbuff,status)
+
+        if (status .gt. 0)then
+C           fill bytes probably haven't been written yet so have to write them
+            status=tstat
+            go to 100
+        end if
+
+C       check if all the fill values are correct
+        do 10 i=1,nfill
+            if (chbuff(i) .ne. chfill)go to 100
+10      continue             
+
+C       fill bytes were correct, so just return
+        return
+
+100     continue
+
+C       fill the buffer with the correct fill value
+        do 20 i=1,nfill
+               chbuff(i)=chfill
+20      continue
+
+C       move to the beginning of the fill bytes
+        call ftmbyt(iunit,filpos,.true.,status)
+
+C       write all the fill bytes
+        call ftpcbf(iunit,0,nfill,chbuff,status)
+
+        if (status .gt. 0)then
+           call ftpmsg('Error writing Data Unit fill bytes (FTPDFL).')
+        end if
+        end