1 files changed, 64 insertions, 0 deletions
diff --git a/pkg/tbtables/fitsio/ftdrec.f b/pkg/tbtables/fitsio/ftdrec.f
new file mode 100644
index 00000000..5265aafc
--- /dev/null
+++ b/pkg/tbtables/fitsio/ftdrec.f
@@ -0,0 +1,64 @@
+C--------------------------------------------------------------------------
+        subroutine ftdrec(ounit,pos,status)
+
+C       delete keyword record at position POS from header
+C
+C       ounit   i  fortran output unit number
+C       pos     i  position of keyword to be deleted (1 = first keyword)
+C       OUTPUT PARAMETERS
+C       status  i  output error status (0 = ok)
+C
+C       written by Wm Pence, HEASARC/GSFC, Jan 1995
+
+        integer ounit,pos,status
+
+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:------- -----------------------------
+
+        character*80 keybuf,keytmp
+        integer ibuff,i,j,nshift
+
+        if (status .gt. 0)return
+
+C       get the number of the data buffer used for this unit
+        ibuff=bufnum(ounit)
+
+        if (pos .lt. 1 .or. pos .gt. 
+     &     (hdend(ibuff)-hdstrt(ibuff,chdu(ibuff)))/80)then
+                status=203
+                return
+        end if
+
+        nxthdr(ibuff)=hdstrt(ibuff,chdu(ibuff))+(pos-1)*80
+
+C       calculate number of header records following the deleted record
+        nshift=(hdend(ibuff)-nxthdr(ibuff))/80
+
+C       go through header shifting each 80 byte record up one place to
+C       fill in the gap created by the deleted keyword
+        j=hdend(ibuff)
+        keybuf=' '
+        do 10 i=1,nshift
+                j=j-80
+C               read current record contents
+                call ftmbyt(ounit,j,.false.,status)
+                call ftgcbf(ounit,0,80,keytmp,status)
+C               overwrite with new contents
+                call ftmbyt(ounit,j,.false.,status)
+                call ftpcbf(ounit,0,80,keybuf,status)
+                keybuf=keytmp
+10      continue
+
+C       update end-of-header pointer
+        hdend(ibuff)=hdend(ibuff)-80
+
+100     continue
+        end