aboutsummaryrefslogtreecommitdiff
path: root/pkg/tbtables/fitsio/fthpup.f
diff options
context:
space:
mode:
authorJoseph Hunkeler <jhunkeler@gmail.com>2015-07-08 20:46:52 -0400
committerJoseph Hunkeler <jhunkeler@gmail.com>2015-07-08 20:46:52 -0400
commitfa080de7afc95aa1c19a6e6fc0e0708ced2eadc4 (patch)
treebdda434976bc09c864f2e4fa6f16ba1952b1e555 /pkg/tbtables/fitsio/fthpup.f
downloadiraf-linux-fa080de7afc95aa1c19a6e6fc0e0708ced2eadc4.tar.gz
Initial commit
Diffstat (limited to 'pkg/tbtables/fitsio/fthpup.f')
-rw-r--r--pkg/tbtables/fitsio/fthpup.f92
1 files changed, 92 insertions, 0 deletions
diff --git a/pkg/tbtables/fitsio/fthpup.f b/pkg/tbtables/fitsio/fthpup.f
new file mode 100644
index 00000000..6a1ac11a
--- /dev/null
+++ b/pkg/tbtables/fitsio/fthpup.f
@@ -0,0 +1,92 @@
+C--------------------------------------------------------------------------
+ subroutine fthpup(ounit,nbytes,status)
+
+C shift the binary table heap up by nbytes bytes
+
+C ounit i fortran output unit number
+C nbytes i number of bytes by which to move the heap
+C status i returned error status (0=ok)
+
+ integer ounit,nbytes,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)
+ character*1 buff(5760)
+ common/ftheap/buff
+C END OF COMMON BLOCK DEFINITIONS-----------------------------------
+
+ integer i,ibuff,ntodo,jpoint,nchar,tstat
+
+ if (status .gt. 0)return
+
+C get the number of the data buffer used for this unit
+ ibuff=bufnum(ounit)
+
+ if (scount(ibuff) .gt. 0)then
+ ntodo=scount(ibuff)
+
+C set pointer to the start of the heap
+ jpoint=dtstrt(ibuff)+theap(ibuff)
+
+10 nchar=min(ntodo,5760)
+
+C move to the read start position
+ call ftmbyt(ounit,jpoint,.false.,status)
+
+C read the heap
+ call ftgcbf(ounit,0,nchar,buff,status)
+
+C move back to the write start postion
+ call ftmbyt(ounit,jpoint-nbytes,.false.,status)
+
+C write the heap
+ call ftpcbf(ounit,0,nchar,buff,status)
+
+C check for error
+ if (status .gt. 0)then
+ call ftpmsg('Error while moving heap up (FTUPHP)')
+ return
+ end if
+
+C check for more data in the heap
+ ntodo=ntodo-nchar
+ jpoint=jpoint+nchar
+ if (ntodo .gt. 0)go to 10
+
+C now overwrite the old fill data with zeros
+ do 20 i=1,5760
+ buff(i)=char(0)
+20 continue
+
+ jpoint=dtstrt(ibuff)+theap(ibuff)+scount(ibuff)-nbytes
+ call ftmbyt(ounit,jpoint,.false.,status)
+
+ ntodo=nbytes
+30 nchar=min(ntodo,5760)
+ call ftpcbf(ounit,0,nchar,buff,status)
+ ntodo=ntodo-nchar
+ if (ntodo .gt. 0)go to 30
+ end if
+
+C update the heap starting address
+ theap(ibuff)=theap(ibuff)-nbytes
+
+C try updating the keyword value, if it exists
+ tstat=status
+ call ftmkyj(ounit,'THEAP',theap(ibuff),'&',status)
+ if (status .eq. 202)status=tstat
+ end