1 files changed, 30 insertions, 0 deletions
diff --git a/pkg/tbtables/fitsio/ftghad.f b/pkg/tbtables/fitsio/ftghad.f
new file mode 100644
index 00000000..5c64d01a
--- /dev/null
+++ b/pkg/tbtables/fitsio/ftghad.f
@@ -0,0 +1,30 @@
+C----------------------------------------------------------------------
+        subroutine ftghad(iunit,curhdu,nxthdu)
+
+C       return the starting byte address of the CHDU and the next HDU.
+
+C       curhdu  i  starting address of the CHDU
+C       nxthdu  i  starting address of the next HDU
+
+C       written by Wm Pence, HEASARC/GSFC, May, 1995
+
+        integer iunit,curhdu,nxthdu
+
+C       COMMON BLOCK DEFINITIONS:--------------------------------------------
+        integer nb,ne
+        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
+C       END OF COMMON BLOCK DEFINITIONS-----------------------------------
+
+        integer ibuff,hdunum
+
+        ibuff=bufnum(iunit)
+        hdunum=chdu(ibuff)
+        curhdu=hdstrt(ibuff,hdunum)
+        nxthdu=hdstrt(ibuff,hdunum+1)
+        end