1 files changed, 54 insertions, 0 deletions
diff --git a/pkg/tbtables/fitsio/ftddef.f b/pkg/tbtables/fitsio/ftddef.f
new file mode 100644
index 00000000..ad82819d
--- /dev/null
+++ b/pkg/tbtables/fitsio/ftddef.f
@@ -0,0 +1,54 @@
+C--------------------------------------------------------------------------
+        subroutine ftddef(ounit,bytlen,status)
+
+C       Data DEFinition
+C       re-define the length of the data unit
+C       this simply redefines the start of the next HDU
+C
+C       ounit   i  Fortran I/O unit number
+C       bytlen  i  new length of the data unit, in bytes
+C       status  i  output error status (0 = ok)
+C
+C       written by Wm Pence, HEASARC/GSFC, June 1991
+
+        integer ounit,bytlen,status
+
+C       COMMON BLOCK DEFINITIONS:--------------------------------------------
+        integer nb,ne,nf
+        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)
+C       END OF COMMON BLOCK DEFINITIONS-----------------------------------
+        
+        integer ibuff
+
+        if (status .gt. 0)return
+
+        ibuff=bufnum(ounit)
+
+        if (dtstrt(ibuff) .lt. 0)then
+C               freeze the header at its current size
+                call fthdef(ounit,0,status)
+        end if
+
+        hdstrt(ibuff,chdu(ibuff)+1)=
+     &          dtstrt(ibuff)+(bytlen+2879)/2880*2880
+
+C       initialize the fictitious heap starting address (immediately following
+C       the array data) and a zero length heap.  This is used to find the
+C       end of the data when checking the fill values in the last block. 
+        scount(ibuff)=0
+        theap(ibuff)=bytlen
+        nxheap(ibuff)=0
+        end