diff options
Diffstat (limited to 'pkg/tbtables/fitsio/ftpclm.f')
| -rw-r--r-- | pkg/tbtables/fitsio/ftpclm.f | 186 |
1 files changed, 186 insertions, 0 deletions
diff --git a/pkg/tbtables/fitsio/ftpclm.f b/pkg/tbtables/fitsio/ftpclm.f new file mode 100644 index 00000000..6508bf98 --- /dev/null +++ b/pkg/tbtables/fitsio/ftpclm.f @@ -0,0 +1,186 @@ +C---------------------------------------------------------------------- + subroutine ftpclm(ounit,colnum,frow,felem,nelem,array,status) + +C write an array of double precision complex data values to the +C specified column of the table. +C The binary table column being written to must have datatype 'M' +C and no datatype conversion will be perform if it is not. + +C ounit i fortran unit number +C colnum i number of the column to write to +C frow i first row to write +C felem i first element within the row to write +C nelem i number of elements to write +C array dcmp array of data values to be written +C status i output error status +C +C written by Wm Pence, HEASARC/GSFC, June 1991 + + integer ounit,colnum,frow,felem,nelem,status +C array is really double precison complex + double precision array(*) + +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----------------------------------- + + double precision buffer(100) + integer bytpix,bstart,tcode + integer ibuff,i1,ntodo,itodo,repeat,rstart,estart,maxpix + double precision scale,zero + logical descrp,scaled + character crow*9,cp1*9,cp2*9,ccol*4 + + if (status .gt. 0)return + +C check for zero length array or bad first row number + if (nelem .le. 0)return + if (frow .lt. 1)then +C error: illegal first row number + status=307 + write(crow,2000)frow +2000 format(i9) + call ftpmsg('Starting row number for table write '// + & 'request is out of range:'//crow//' (FTPCLM).') + return + end if + + ibuff=bufnum(ounit) + +C if HDU structure is not defined then scan the header keywords + if (dtstrt(ibuff) .lt. 0)call ftrdef(ounit,status) + + i1=1 +C multiply by 2, because the complex data type has pairs of values + ntodo=nelem*2 + rstart=frow-1 + scale=tscale(colnum+tstart(ibuff)) + zero=tzero(colnum+tstart(ibuff)) + if (scale .eq. 1. .and. zero .eq. 0.)then + scaled=.false. + else + scaled=.true. + end if + tcode=tdtype(colnum+tstart(ibuff)) + + if (felem .lt. 1)then +C illegal element number + status=308 + write(crow,2000)felem + call ftpmsg('Starting element number for write '// + & 'request is out of range:'//crow//' (FTPCLM).') + return + else +C multiply by 2 because the complex data type has pairs of values + estart=(felem-1)*2 + end if + +C calculate the maximum number of column pixels which fit in buffer + bytpix=8 + maxpix=100 + + if (tcode .eq. 163)then + repeat=trept(colnum+tstart(ibuff))*2 + if (felem*2 .gt. repeat)then +C illegal element number + status=308 + write(crow,2000)felem + call ftpmsg('Starting element number for write '// + & 'request is out of range:'//crow//' (FTPCLM).') + return + end if + descrp=.false. + else if (tcode .eq. -163)then +C this is a variable length descriptor column + descrp=.true. + repeat=nelem+felem-1 +C write the number of elements and the starting offset: + call ftpdes(ounit,colnum,frow,repeat, + & nxheap(ibuff),status) + repeat=repeat*2 +C move the i/o pointer to the start of the pixel sequence + bstart=dtstrt(ibuff)+nxheap(ibuff)+ + & theap(ibuff)+estart*bytpix + call ftmbyt(ounit,bstart,.true.,status) +C increment the empty heap starting address: + nxheap(ibuff)=nxheap(ibuff)+repeat*bytpix + else +C error illegal binary table data type code + status=312 + return + end if + +C process as many contiguous pixels as possible, up to buffer size +20 itodo=min(ntodo,repeat-estart,maxpix) + + if (.not. descrp)then +C move the i/o pointer to the start of the sequence of pixels + bstart=dtstrt(ibuff)+rstart*rowlen(ibuff) + & +tbcol(colnum+tstart(ibuff))+estart*bytpix + call ftmbyt(ounit,bstart,.true.,status) + end if + +C scale data into buffer, + call ftuscm(array(i1),itodo,scaled,scale,zero,buffer) + +C do any machine dependent data conversion and write the R*8 data + call ftpr8b(ounit,itodo,0,buffer,status) + + if (status .gt. 0)then + write(ccol,2001)colnum +2001 format(i4) + if (descrp)then +C this is a variable length descriptor column + write(crow,2000)frow + write(cp1,2000)felem+i1-1 + write(cp2,2000)felem+i1+itodo-2 + call ftpmsg('Error writing elements'//cp1//' to'//cp2 + & //' in row'//crow) + call ftpmsg(' of variable length vector column'//ccol + & //' (FTPCLM.') + else if (trept(colnum+tstart(ibuff)) .eq. 1)then +C this is not a vector column (simple case) + write(cp1,2000)frow+i1-1 + write(cp2,2000)frow+i1+itodo-2 + call ftpmsg('Error writing rows'//cp1//' to'//cp2 + & //' of column'//ccol//' (FTPCLM).') + else +C this is a vector column (more complicated case) + write(crow,2000)rstart+1 + write(cp1,2000)estart+1 + write(cp2,2000)itodo + call ftpmsg('Error writing'//cp2//' elements to' + & //' column'//ccol) + call ftpmsg(' starting at row'//crow + & //', element'//cp1//' (FTPCLM).') + end if + return + end if + +C find number of pixels left to do, and quit if none left + ntodo=ntodo-itodo + if (ntodo .gt. 0)then +C increment the pointers + i1=i1+itodo + estart=estart+itodo + if (estart .eq. repeat)then + estart=0 + rstart=rstart+1 + end if + go to 20 + end if + end |