1 files changed, 94 insertions, 0 deletions
diff --git a/pkg/tbtables/fitsio/ftdrow.f b/pkg/tbtables/fitsio/ftdrow.f
new file mode 100644
index 00000000..22c0bfdd
--- /dev/null
+++ b/pkg/tbtables/fitsio/ftdrow.f
@@ -0,0 +1,94 @@
+C--------------------------------------------------------------------------
+        subroutine ftdrow(iunit,frow,nrows,status)
+
+C       delete NROWS rows from a table, beginning with row FROW
+
+C       iunit   i  Fortran I/O unit number
+C       frow    i  row number after which the new rows will be inserted.
+C                  Specify  0 to add rows to the beginning of the table.
+C       nrows   i  number of rows to add to the table (must be greater than 0)
+C       status  i  returned error status (0=ok)
+
+        integer iunit,frow,nrows,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,naxis1,naxis2,size,freesp,nblock,row
+        character comm*8
+
+        if (status .gt. 0)return
+
+C       define the number of the buffer used for this file
+        ibuff=bufnum(iunit)
+
+C       test that the CHDU is an ASCII table or BINTABLE
+        if (hdutyp(ibuff) .ne. 1 .and. hdutyp(ibuff) .ne. 2)then
+                status=235
+                call ftpmsg('Can only delete rows from TABLE or '//
+     &          'BINTABLE extension (FTDROW)')
+                return
+        end if
+
+C       get current size of the table
+        call ftgkyj(iunit,'NAXIS1',naxis1,comm,status)
+        call ftgkyj(iunit,'NAXIS2',naxis2,comm,status)
+
+        if (nrows .lt. 0)then
+                 status=306
+                 call ftpmsg('Cannot delete negative number of ' //
+     &           'rows in the table (FTDROW)')
+                 return
+        else if (frow+nrows-1 .gt. naxis2)then
+                 status=307
+                 call ftpmsg('Specified number of rows to delete '
+     &           //'exceeds number of rows in table (FTDROW)')
+                 return
+        else if (nrows .eq. 0)then
+                 return
+        else if (frow .gt. naxis2)then
+                status=307
+                call ftpmsg('First row to delete is greater'//
+     &            ' than the number of rows in the table (FTDROW)') 
+                return
+        else if (frow .le. 0)then
+                status=307
+                call ftpmsg('Delete starting row number is less '
+     &          //'than 1 (FTDROW)')
+                return
+        end if
+        
+C       Calculate how many FITS blocks (2880 bytes) need to be deleted
+        size=theap(ibuff)+scount(ibuff)
+        freesp=((size+2879)/2880)*2880 - size + naxis1*nrows
+        nblock=freesp/2880
+
+C       shift the rows up
+        row=frow+nrows
+        call ftrwup(iunit,row,naxis2,nrows,status)
+
+C       shift the heap up
+        size=naxis1*nrows
+        call fthpup(iunit,size,status)
+
+        if (nblock .gt. 0)call ftdblk(iunit,nblock,1,status)
+
+C       update the NAXIS2 keyword
+        naxis2=naxis2-nrows
+        call ftmkyj(iunit,'NAXIS2',naxis2,'&',status)
+        end