1 files changed, 63 insertions, 0 deletions
diff --git a/pkg/tbtables/fitsio/ftgdes.f b/pkg/tbtables/fitsio/ftgdes.f
new file mode 100644
index 00000000..6cf28f12
--- /dev/null
+++ b/pkg/tbtables/fitsio/ftgdes.f
@@ -0,0 +1,63 @@
+C----------------------------------------------------------------------
+        subroutine ftgdes(iunit,colnum,rownum,nelem,offset,status)
+
+C       read the descriptor values from a binary table.  This is only
+C       used for column which have TFORMn = 'P', i.e., for variable
+C       length arrays.
+
+C       iunit   i  fortran unit number
+C       colnum  i  number of the column to read
+C       rownum  i  number of the row to read
+C       nelem   i  output number of elements
+C       offset  i  output byte offset of the first element
+C       status  i  output error status
+C
+C       written by Wm Pence, HEASARC/GSFC, Nov 1991
+
+        integer iunit,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(iunit)
+
+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(iunit,bstart,.true.,status)
+
+C       now read the number of elements and the offset to the table:
+        call ftgi4b(iunit,2,0,iray,status)
+        nelem=iray(1)
+        offset=iray(2)
+        end