FITS File Open and Close Subroutines: page
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)