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FITS File Open and Close Subroutines: page ![[*]](http://heasarc.gsfc.nasa.gov/images/latex2html/cross_ref_motif.gif)
FTOPEN(unit,filename,rwmode, > blocksize,status)
FTINIT(unit,filename,blocksize, > status)
FTFLUS(unit, > status)
FTCLOS(unit, > status)
FTDELT(unit, > status)
FTGIOU( > iounit, status)
FTFIOU(iounit, > status)
HDU-Level Operations: page
FTMAHD(unit,nhdu, > hdutype,status)
FTMRHD(unit,nmove, > hdutype,status)
FTGHDN(unit, > nhdu)
FTCRHD(unit, > status)
FTIIMG(unit,bitpix,naxis,naxes, > status)
FTITAB(unit,rowlen,nrows,tfields,ttype,tbcol,tform,tunit,extname, >
status)
FTIBIN(unit,nrows,tfields,ttype,tform,tunit,extname,varidat > status)
FTRSIM(unit,bitpix,naxis,naxes,status)
FTDHDU(unit, > hdutype,status)
FTCOPY(iunit,ounit,morekeys, > status)
FTCPDT(iunit,ounit, > status)
Subroutines to specify or modify the structure of the CHDU: page
FTRDEF(unit, > status) (DEPRECATED)
FTPDEF(unit,bitpix,naxis,naxes,pcount,gcount, > status) (DEPRECATED)
FTADEF(unit,rowlen,tfields,tbcol,tform,nrows > status) (DEPRECATED)
FTBDEF(unit,tfields,tform,varidat,nrows > status) (DEPRECATED)
FTDDEF(unit,bytlen, > status) (DEPRECATED)
FTPTHP(unit,theap, > status)
Header Space and Position Subroutines: page
FTHDEF(unit,morekeys, > status)
FTGHSP(iunit, > keysexist,keysadd,status)
FTGHPS(iunit, > keysexist,key_no,status)
Read or Write Standard Header Subroutines: page
FTPHPS(unit,bitpix,naxis,naxes, > status)
FTPHPR(unit,simple,bitpix,naxis,naxes,pcount,gcount,extend, > status)
FTGHPR(unit,maxdim, > simple,bitpix,naxis,naxes,pcount,gcount,extend,
status)
FTPHTB(unit,rowlen,nrows,tfields,ttype,tbcol,tform,tunit,extname, >
status)
FTGHTB(unit,maxdim, > rowlen,nrows,tfields,ttype,tbcol,tform,tunit,
extname,status)
FTPHBN(unit,nrows,tfields,ttype,tform,tunit,extname,varidat > status)
FTGHBN(unit,maxdim, > nrows,tfields,ttype,tform,tunit,extname,varidat,
status)
Write Keyword Subroutines: page
FTPREC(unit,card, > status)
FTPCOM(unit,comment, > status)
FTPHIS(unit,history, > status)
FTPDAT(unit, > status)
FTPKY[JLS](unit,keyword,keyval,comment, > status)
FTPKY[EDFG](unit,keyword,keyval,decimals,comment, > status)
FTPKLS(unit,keyword,keyval,comment, > status)
FTPLSW(unit, > status)
FTPKYU(unit,keyword,comment, > status)
FTPKN[JLS](unit,keyroot,startno,no_keys,keyvals,comments, > status)
FTPKN[EDFG](unit,keyroot,startno,no_keys,keyvals,decimals,comments, >
status)
FTPKYT(unit,keyword,intval,dblval,comment, > status)
FTPUNT(unit,keyword,units, > status)
Insert Keyword Subroutines: page
FTIREC(unit,key_no,card, > status)
FTIKY[JLS](unit,keyword,keyval,comment, > status)
FTIKY[EDFG](unit,keyword,keyval,decimals,comment, > status)
FTIKYU(unit,keyword,comment, > status)
Read Keyword Subroutines: page
FTGREC(unit,key_no, > card,status)
FTGKYN(unit,key_no, > keyword,value,comment,status)
FTGCRD(unit,keyword, > card,status)
FTGNXK(unit,inclist,ninc,exclist,nexc, > card,status)
FTGKEY(unit,keyword, > value,comment,status)
FTGKY[EDJLS](unit,keyword, > keyval,comment,status)
FTGKN[EDJLS](unit,keyroot,startno,max_keys, > keyvals,nfound,status)
FTGKYT(unit,keyword, > intval,dblval,comment,status)
FTGUNT(unit,keyword, > units,status)
Modify Keyword Subroutines: page
FTMREC(unit,key_no,card, > status)
FTMCRD(unit,keyword,card, > status)
FTMNAM(unit,oldkey,keyword, > status)
FTMCOM(unit,keyword,comment, > status)
FTMKY[JLS](unit,keyword,keyval,comment, > status)
FTMKY[EDFG](unit,keyword,keyval,decimals,comment, > status)
FTMKYU(unit,keyword,comment, > status)
Update Keyword Subroutines: page
FTUCRD(unit,keyword,card, > status)
FTUKY[JLS](unit,keyword,keyval,comment, > status)
FTUKY[EDFG](unit,keyword,keyval,decimals,comment, > status)
FTUKYU(unit,keyword,comment, > status)
Delete Keyword Subroutines: page
FTDREC(unit,key_no, > status)
FTDKEY(unit,keyword, > status)
Define Data Scaling Parameters and Undefined Pixel Flags: page
FTPSCL(unit,bscale,bzero, > status)
FTTSCL(unit,colnum,tscal,tzero, > status)
FTPNUL(unit,blank, > status)
FTSNUL(unit,colnum,snull > status)
FTTNUL(unit,colnum,tnull > status)
FITS Primary Array or IMAGE Extension I/O Subroutines: page
FTPPR[BIJED](unit,group,fpixel,nelements,values, > status)
FTPPN[BIJED](unit,group,fpixel,nelements,values,nullval > status)
FTPPRU(unit,group,fpixel,nelements, > status)
FTGPV[BIJED](unit,group,fpixel,nelements,nullval, > values,anyf,status)
FTGPF[BIJED](unit,group,fpixel,nelements, > values,flagvals,anyf,status)
FTPGP[BIJED](unit,group,fparm,nparm,values, > status)
FTGGP[BIJED](unit,group,fparm,nparm, > values,status)
FTP2D[BIJED](unit,group,dim1,naxis1,naxis2,image, > status)
FTP3D[BIJED](unit,group,dim1,dim2,naxis1,naxis2,naxis3,cube, > status)
FTG2D[BIJED](unit,group,nullval,dim1,naxis1,naxis2, > image,anyf,status)
FTG3D[BIJED](unit,group,nullval,dim1,dim2,naxis1,naxis2,naxis3, >
cube,anyf,status)
FTPSS[BIJED](unit,group,naxis,naxes,fpixels,lpixels,array, > status)
FTGSV[BIJED](unit,group,naxis,naxes,fpixels,lpixels,incs,nullval, >
array,anyf,status)
FTGSF[BIJED](unit,group,naxis,naxes,fpixels,lpixels,incs, >
array,flagvals,anyf,status)
Table Column Information Subroutines: page
FTGCNO(unit,casesen,coltemplate, > colnum,status)
FTGCNN(unit,casesen,coltemplate, > colnam,colnum,status)
FTGTCL(unit,colnum, > datacode,repeat,width,status)
FTGACL(unit,colnum, >
ttype,tbcol,tunit,tform,tscal,tzero,snull,tdisp,status)
FTGBCL(unit,colnum, >
ttype,tunit,datatype,repeat,tscal,tzero,tnull,tdisp,status)
FTPTDM(unit,colnum,naxis,naxes, > status)
FTGTDM(unit,colnum,maxdim, > naxis,naxes,status)
FFGRSZ(unit, > nrows,status)
Low-Level Table Access Subroutines: page
FTGTBS(unit,frow,startchar,nchars, > string,status)
FTPTBS(unit,frow,startchar,nchars,string, > status)
FTGTBB(unit,frow,startchar,nchars, > array,status)
FTPTBB(unit,frow,startchar,nchars,array, > status)
High-Level Table Access Subroutines: page
FTIROW(unit,frow,nrows, > status)
FTDROW(unit,frow,nrows, > status)
FTICOL(unit,colnum,ttype,tform, > status)
FTICLS(unit,colnum,ncols,ttype,tform, > status)
FTDCOL(unit,colnum, > status)
FTPCL[SLBIJEDCM](unit,colnum,frow,felem,nelements,values, > status)
FTPCN[BIJED](unit,colnum,frow,felem,nelements,values,nullval > status)
FTPCLX(unit,colnum,frow,fbit,nbit,lray, > status)
FTPCLU(unit,colnum,frow,felem,nelements, > status)
FTGCL(unit,colnum,frow,felem,nelements, > values,status)
FTGCV[SBIJEDCM](unit,colnum,frow,felem,nelements,nullval, >
values,anyf,status)
FTGCF[SLBIJEDCM](unit,colnum,frow,felem,nelements, >
values,flagvals,anyf,status)
FTGSV[BIJED](unit,colnum,naxis,naxes,fpixels,lpixels,incs,nullval, >
array,anyf,status)
FTGSF[BIJED](unit,colnum,naxis,naxes,fpixels,lpixels,incs, >
array,flagvals,anyf,status)
FTGCX(unit,colnum,frow,fbit,nbit, > lray,status)
FTGCX[IJD](unit,colnum,frow,nrows,fbit,nbit, > array,status)
FTGDES(unit,colnum,rownum, > nelements,offset,status)
FTPDES(unit,colnum,rownum,nelements,offset, > status)
Celestial Coordinate System Subroutines: page
FTGICS(unit, > xrval,yrval,xrpix,yrpix,xinc,yinc,rot,coordtype,status)
FTGTCS(unit,xcol,ycol, >
xrval,yrval,xrpix,yrpix,xinc,yinc,rot,coordtype,status)
FTWLDP(xpix,ypix,xrval,yrval,xrpix,yrpix,xinc,yinc,rot,
coordtype, > xpos,ypos,status)
FTXYPX(xpos,ypos,xrval,yrval,xrpix,yrpix,xinc,yinc,rot,
coordtype, > xpix,ypix,status)
File Checksum Subroutines: page
FTPCKS(unit, > status)
FTUCKS(unit, > status)
FTVCKS(unit, > dataok,hduok,status)
FTGCKS(unit, > datasum,hdusum,status)
FTESUM(sum,complement, > checksum)
FTDSUM(checksum,complement, > sum)
General Utility Subroutines: page
FTVERS( > version)
FTARCH( > compid)
FTGSDT(> day,month,year,status)
FTGHAD(iunit, > curaddr,nextaddr)
FTGERR(status, > errtext)
FTGMSG( > errmsg)
FTPMSG(errmsg)
FTCMSG
FTUPCH(string)
FTCMPS(str_template,string,casesen, > match,exact)
FTTKEY(keyword, > status)
FTPSVC(card, > value,comment,status)
FTKEYN(keyroot,seq_no, > keyword,status)
FTNKEY(seq_no,keyroot, > keyword,status)
FTDTYP(value, > dtype,status)
FTASFM(tform, > datacode,width,decimals,status)
FTBNFM(tform, > datacode,repeat,width,status)
FTGABC(tfields,tform,space, > rowlen,tbcol,status)
FTGTHD(template, > card,hdtype,status)