Initial commit

1 files changed, 87 insertions, 0 deletions

diff --git a/pkg/tbtables/fitsio/ftiimg.f b/pkg/tbtables/fitsio/ftiimg.f
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+++ b/pkg/tbtables/fitsio/ftiimg.f
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+C--------------------------------------------------------------------------
+        subroutine ftiimg(ounit,bitpix,naxis,naxes,status)
+
+C       insert an IMAGE extension following the current HDU 
+
+C       ounit   i  fortran output unit number
+C       bitpix  i  number of bits per data value
+C       naxis   i  number of axes in the data array
+C       naxes   i  array giving the length of each data axis
+C       status  i  returned error status (0=ok)
+
+        integer ounit,bitpix,naxis,naxes(*),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
+        character*1 buff(5760)
+        common/ftheap/buff
+C       END OF COMMON BLOCK DEFINITIONS:------------------------------------
+
+        integer ibuff,nhdu,i,savstr,nblock
+
+        if (status .gt. 0)return
+        ibuff=bufnum(ounit)
+
+C       close the current HDU to make sure END and fill values are written
+        call ftchdu(ounit,status)
+        if (status .gt. 0)return
+
+C       save the starting address of the next HDU
+        nhdu=chdu(ibuff)+1
+        savstr=hdstrt(ibuff,nhdu)
+
+C       define a fake CHDU with a one block header
+        dtstrt(ibuff)=hdstrt(ibuff,chdu(ibuff))+2880
+
+C       define the size of the new HDU (this modifies hdstrt(ibuff,nhdu))
+        call ftpdef(ounit,bitpix,naxis,naxes,0,1,status)
+
+C       use start of next HDU to calc. how big this new HDU is
+        nblock=(hdstrt(ibuff,nhdu)-hdstrt(ibuff,nhdu-1))/2880
+
+C       reset the start of the next HDU back to it original value
+        hdstrt(ibuff,nhdu)=savstr
+
+C       insert the required number of blocks at the end of the real CHDU
+C       (first define hdutyp so that the correct fill value will be used) 
+        hdutyp(ibuff)=0
+        call ftiblk(ounit,nblock,1,status)
+        if (status .gt. 0)return
+
+C       increment the number of HDUs in the file and their starting address
+        maxhdu(ibuff)=maxhdu(ibuff)+1
+        do 10 i=maxhdu(ibuff),nhdu,-1
+                hdstrt(ibuff,i+1)=hdstrt(ibuff,i)
+10      continue
+
+C       again, reset the start of the next HDU back to it original value
+        hdstrt(ibuff,nhdu)=savstr
+
+C       flush the buffers holding data for the old HDU
+        call ftflsh(ibuff,status)
+
+C       recover common block space containing column descriptors for old HDU
+        call ftfrcl(ounit,status)
+
+C       move to the new (empty) HDU
+        chdu(ibuff)=nhdu
+
+C       set parameters describing an empty 1 block header
+        hdutyp(ibuff)=0
+        nxthdr(ibuff)=hdstrt(ibuff,nhdu)
+        hdend(ibuff)= hdstrt(ibuff,nhdu)
+        dtstrt(ibuff)=hdstrt(ibuff,nhdu)+2888
+
+C       write the header keywords
+        call ftphpr(ounit,.true.,bitpix,naxis,naxes,0,1,.true.,status)
+
+C       define the structure of the new HDU
+        call ftpdef(ounit,bitpix,naxis,naxes,0,1,status)
+        end