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authorJoe Hunkeler <jhunkeler@gmail.com>2015-08-11 16:51:37 -0400
committerJoe Hunkeler <jhunkeler@gmail.com>2015-08-11 16:51:37 -0400
commit40e5a5811c6ffce9b0974e93cdd927cbcf60c157 (patch)
tree4464880c571602d54f6ae114729bf62a89518057 /pkg/tbtables/fitsio/ftpdfl.f
downloadiraf-osx-40e5a5811c6ffce9b0974e93cdd927cbcf60c157.tar.gz
Repatch (from linux) of OSX IRAF
Diffstat (limited to 'pkg/tbtables/fitsio/ftpdfl.f')
-rw-r--r--pkg/tbtables/fitsio/ftpdfl.f94
1 files changed, 94 insertions, 0 deletions
diff --git a/pkg/tbtables/fitsio/ftpdfl.f b/pkg/tbtables/fitsio/ftpdfl.f
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+C----------------------------------------------------------------------
+ subroutine ftpdfl(iunit,status)
+
+C Write the Data Unit Fill values if they are not already correct
+C Fill the data unit with zeros or blanks depending on the type of HDU
+C from the end of the data to the end of the current FITS 2880 byte block
+
+C iunit i fortran unit number
+C status i output error status
+C
+C written by Wm Pence, HEASARC/GSFC, June, 1994
+
+ integer iunit,status
+
+C COMMON BLOCK DEFINITIONS:--------------------------------------------
+ integer nf,nb,ne
+ 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)
+ character*1 chbuff(2880),chfill,xdummy(2879)
+ common/ftheap/chbuff,chfill,xdummy
+C END OF COMMON BLOCK DEFINITIONS-----------------------------------
+
+ integer ibuff,filpos,nfill,i,tstat
+
+ if (status .gt. 0)return
+
+ ibuff=bufnum(iunit)
+
+C check if the data unit is null
+
+ if (theap(ibuff) .eq. 0)return
+
+ filpos=dtstrt(ibuff)+theap(ibuff)+scount(ibuff)
+ nfill=(filpos+2879)/2880*2880-filpos
+
+C return if there are no fill bytes
+ if (nfill .eq. 0)return
+
+C set the correct fill value to be checked
+ if (hdutyp(ibuff) .eq. 1)then
+C this is an ASCII table; should be filled with blanks
+ chfill=char(32)
+ else
+ chfill=char(0)
+ end if
+
+C move to the beginning of the fill bytes and read them
+ tstat=status
+ call ftmbyt(iunit,filpos,.true.,status)
+ call ftgcbf(iunit,0,nfill,chbuff,status)
+
+ if (status .gt. 0)then
+C fill bytes probably haven't been written yet so have to write them
+ status=tstat
+ go to 100
+ end if
+
+C check if all the fill values are correct
+ do 10 i=1,nfill
+ if (chbuff(i) .ne. chfill)go to 100
+10 continue
+
+C fill bytes were correct, so just return
+ return
+
+100 continue
+
+C fill the buffer with the correct fill value
+ do 20 i=1,nfill
+ chbuff(i)=chfill
+20 continue
+
+C move to the beginning of the fill bytes
+ call ftmbyt(iunit,filpos,.true.,status)
+
+C write all the fill bytes
+ call ftpcbf(iunit,0,nfill,chbuff,status)
+
+ if (status .gt. 0)then
+ call ftpmsg('Error writing Data Unit fill bytes (FTPDFL).')
+ end if
+ end