Repatch (from linux) of OSX IRAF

1 files changed, 572 insertions, 0 deletions

diff --git a/vendor/cfitsio/f77_wrap4.c b/vendor/cfitsio/f77_wrap4.c
new file mode 100644
index 00000000..92668c78
--- /dev/null
+++ b/vendor/cfitsio/f77_wrap4.c
@@ -0,0 +1,572 @@
+/************************************************************************
+
+     f77_wrap1.c and f77_wrap2.c have now been split into 4 files to
+     prevent compile-time memory errors (from expansion of compiler commands).
+     f77_wrap1.c was split into f77_wrap1.c and f77_wrap3.c, and
+     f77_wrap2.c was split into f77_wrap2.c and f77_wrap4.c:
+       
+       f77_wrap1.c contains routines operating on whole files and some 
+       utility routines.
+     
+       f77_wrap2.c contains routines operating on primary array, image, 
+       or column elements.
+
+       f77_wrap3.c contains routines operating on headers & keywords.
+
+       f77_wrap4.c contains miscellaneous routines.
+
+     Peter's original comments:
+
+     Together, f77_wrap1.c and f77_wrap2.c contain C wrappers for all
+     the CFITSIO routines prototyped in fitsio.h, except for the
+     generic datatype routines and features not supported in fortran
+     (eg, unsigned integers), a few routines prototyped in fitsio2.h,
+     which only a handful of FTOOLS use, plus a few obsolete FITSIO
+     routines not present in CFITSIO.  This file allows Fortran code
+     to use the CFITSIO library instead of the FITSIO library without
+     modification.  It also gives access to new routines not present
+     in FITSIO.  Fortran FTOOLS must continue using the old routine
+     names from FITSIO (ie, ftxxxx), but most of the C-wrappers simply
+     redirect those calls to the corresponding CFITSIO routines (ie,
+     ffxxxx), with appropriate parameter massaging where necessary.
+     The main exception are read/write routines ending in j (ie, long
+     data) which get redirected to C routines ending in k (ie, int
+     data). This is more consistent with the default integer type in
+     Fortran. f77_wrap1.c primarily holds routines operating on whole
+     files and extension headers.  f77_wrap2.c handle routines which
+     read and write the data portion, plus miscellaneous extra routines.
+     
+        File created by Peter Wilson (HSTX), Oct-Dec. 1997
+************************************************************************/
+
+#include "fitsio2.h"
+#include "f77_wrap.h"
+
+/*********************************************************************/
+/*                     Iterator Functions                            */
+/*********************************************************************/
+
+/* Use a simple ellipse prototype for Fwork_fn to satisfy finicky compilers */
+typedef struct {
+   void *userData;
+   void (*Fwork_fn)(PLONG_cfTYPE *total_n, ...);
+} FtnUserData;
+
+/*        Declare protoypes to make C++ happy       */
+int Cwork_fn(long, long, long, long, int, iteratorCol *, void *);
+void Cffiter( int n_cols, int *units, int *colnum, char *colname[], 
+	      int *datatype, int *iotype,
+              long offset, long n_per_loop, void *Fwork_fn,
+	      void *userData, int *status);
+
+/******************************************************************/
+/*  Cffiter is the wrapper for CFITSIO's ffiter which takes most  */
+/*  of its arguments via a structure, iteratorCol.  This routine  */
+/*  takes a list of arrays and converts them into a single array  */
+/*  of type iteratorCol and passes it to CFITSIO.  Because ffiter */
+/*  will be passing control to a Fortran work function, the C     */
+/*  wrapper, Cwork_fn, must be passed in its place which then     */
+/*  calls the Fortran routine after the necessary data            */
+/*  manipulation.  The Fortran routine is passed via the user-    */
+/*  supplied parameter pointer.                                   */
+/******************************************************************/
+
+void Cffiter( int n_cols, int *units, int *colnum, char *colname[], 
+	      int *datatype, int *iotype,
+              long offset, long n_per_loop, void *Fwork_fn,
+	      void *userData, int *status)
+{
+   iteratorCol *cols;
+   int i;
+   FtnUserData FuserData;
+
+   FuserData.Fwork_fn = (void(*)(PLONG_cfTYPE *,...))Fwork_fn;
+   FuserData.userData = userData;
+
+   cols = (iteratorCol *)malloc( n_cols*sizeof(iteratorCol) );
+   if( cols==NULL ) {
+      *status = MEMORY_ALLOCATION;
+      return;
+   }
+   for(i=0;i<n_cols;i++) {
+      cols[i].fptr     = gFitsFiles[ units[i] ];
+      cols[i].colnum   = colnum[i];
+      strncpy(cols[i].colname,colname[i],70);
+      cols[i].datatype = datatype[i];
+      cols[i].iotype   = iotype[i];
+   }
+
+   ffiter( n_cols, cols, offset, n_per_loop, Cwork_fn, 
+	   (void*)&FuserData, status );
+   free(cols);
+}
+#define ftiter_STRV_A4 NUM_ELEM_ARG(1)
+FCALLSCSUB11(Cffiter,FTITER,ftiter,INT,INTV,INTV,STRINGV,INTV,INTV,LONG,LONG,PVOID,PVOID,PINT)
+
+/*-----------------------------------------------------------------*/
+/*  This function is called by CFITSIO's ffiter and serves as the  */
+/*  wrapper for the Fortran work function which is passed in the   */
+/*  extra user-supplied pointer.  It breaks up C's iteratorCol     */
+/*  into several separate arrays.  Because we cannot send an       */
+/*  array of pointers for the column data, we instead send *many*  */
+/*  arrays as final parameters.                                    */
+/*-----------------------------------------------------------------*/
+
+int Cwork_fn( long total_n, long offset,       long first_n,    long n_values,
+	      int n_cols,   iteratorCol *cols, void *FuserData )
+{
+   int  *units, *colnum, *datatype, *iotype, *repeat;
+   char **sptr;
+   void **ptrs;
+   int  i,j,k,nstr,status=0;
+   long *slen;
+
+#ifdef vmsFortran
+   /*  Passing strings under VMS require a special structure  */
+   fstringvector *vmsStrs;
+#endif
+
+   /*  Allocate memory for all the arrays.  Grab all the int's  */
+   /*  at once and divide up among parameters                   */
+
+   ptrs  = (void**)malloc(2*n_cols*sizeof(void*));
+   if( ptrs==NULL )
+      return( MEMORY_ALLOCATION );
+   units = (int*)malloc(5*n_cols*sizeof(int));
+   if( units==NULL ) {
+      free(ptrs);
+      return( MEMORY_ALLOCATION );
+   }
+   colnum   = units + 1 * n_cols;
+   datatype = units + 2 * n_cols;
+   iotype   = units + 3 * n_cols;
+   repeat   = units + 4 * n_cols;
+
+   nstr = 0;
+   slen = (long*)(ptrs+n_cols);
+#ifdef vmsFortran
+   vmsStrs = (fstringvector *)calloc(sizeof(fstringvector),n_cols);
+   if( vmsStrs==NULL ) {
+      free(ptrs);
+      free(units);
+      return( MEMORY_ALLOCATION );
+   }
+#endif
+
+   for(i=0;i<n_cols;i++) {
+      for(j=0;j<MAXFITSFILES;j++)
+	 if( cols[i].fptr==gFitsFiles[j] )
+	    units[i] = j;
+      colnum[i]   = cols[i].colnum;
+      datatype[i] = cols[i].datatype;
+      iotype[i]   = cols[i].iotype;
+      repeat[i]   = cols[i].repeat;
+
+      if( datatype[i]==TLOGICAL ) {
+	 /*  Don't forget first element is null value  */
+	 ptrs[i] = (void *)malloc( (n_values*repeat[i]+1)*4 );
+	 if( ptrs[i]==NULL ) {
+	    free(ptrs);
+	    free(units);
+	    return( MEMORY_ALLOCATION );
+	 }
+	 for( j=0;j<=n_values*repeat[i]; j++ )
+	    ((int*)ptrs[i])[j] = C2FLOGICAL( ((char*)cols[i].array)[j]);
+      } else if ( datatype[i]==TSTRING ) {
+	 sptr = (char**)cols[i].array;
+	 slen[nstr] = sptr[1] - sptr[0];
+	 for(j=0;j<=n_values;j++)
+	    for(k=strlen( sptr[j] );k<slen[nstr];k++)
+	       sptr[j][k] = ' ';
+#ifdef vmsFortran
+	 vmsStrs[nstr].dsc$a_pointer         = sptr[0];
+	 vmsStrs[nstr].dsc$w_length          = slen[nstr];
+	 vmsStrs[nstr].dsc$l_m[0]            = n_values+1;
+	 vmsStrs[nstr].dsc$l_arsize          = slen[nstr] * (n_values+1);
+	 vmsStrs[nstr].dsc$bounds[0].dsc$l_u = n_values+1;
+	 vmsStrs[nstr].dsc$a_a0              = sptr[0] - slen[nstr];
+	 ptrs[i] = (void *)(vmsStrs+nstr);
+#else
+	 ptrs[i] = (void *)sptr[0];
+#endif
+	 nstr++;
+      } else
+	 ptrs[i] = (void *)cols[i].array;
+   }
+
+   if(!status) {
+              /*  Handle Fortran function call manually...  */
+	      /*  cfortran.h cannot handle all the desired  */
+              /*  'ptrs' nor the indirect function call.    */
+
+      PLONG_cfTYPE a1,a2,a3,a4;    /* Do this in case longs are */ 
+      FtnUserData *f;              /* not the same size as ints */
+
+      a1 = total_n;
+      a2 = offset;
+      a3 = first_n;
+      a4 = n_values;
+      f  = (FtnUserData *)FuserData;
+
+      f->Fwork_fn(&a1,&a2,&a3,&a4,&n_cols,units,colnum,datatype,
+		  iotype,repeat,&status,f->userData,
+		  ptrs[ 0], ptrs[ 1], ptrs[ 2], ptrs[ 3], ptrs[ 4],
+		  ptrs[ 5], ptrs[ 6], ptrs[ 7], ptrs[ 8], ptrs[ 9],
+		  ptrs[10], ptrs[11], ptrs[12], ptrs[13], ptrs[14],
+		  ptrs[15], ptrs[16], ptrs[17], ptrs[18], ptrs[19],
+		  ptrs[20], ptrs[21], ptrs[22], ptrs[23], ptrs[24] );
+   }
+
+   /*  Check whether there are any LOGICAL or STRING columns being outputted  */
+   nstr=0;
+   for( i=0;i<n_cols;i++ ) {
+      if( iotype[i]!=InputCol ) {
+	 if( datatype[i]==TLOGICAL ) {
+	    for( j=0;j<=n_values*repeat[i];j++ )
+	       ((char*)cols[i].array)[j] = F2CLOGICAL( ((int*)ptrs[i])[j] );
+	    free(ptrs[i]);
+	 } else if( datatype[i]==TSTRING ) {
+	    for( j=0;j<=n_values;j++ )
+	       ((char**)cols[i].array)[j][slen[nstr]-1] = '\0';
+	 }
+      }
+      if( datatype[i]==TSTRING ) nstr++;
+   }
+
+   free(ptrs);
+   free(units);
+#ifdef vmsFortran
+   free(vmsStrs);
+#endif
+   return(status);
+}
+
+
+/*--------------------- WCS Utilities ----------------------------*/
+FCALLSCSUB10(ffgics, FTGICS, ftgics, FITSUNIT,     PDOUBLE,PDOUBLE,PDOUBLE,PDOUBLE,PDOUBLE,PDOUBLE,PDOUBLE,PSTRING,PINT)
+FCALLSCSUB11(ffgicsa,FTGICSA,ftgicsa,FITSUNIT,BYTE,PDOUBLE,PDOUBLE,PDOUBLE,PDOUBLE,PDOUBLE,PDOUBLE,PDOUBLE,PSTRING,PINT)
+FCALLSCSUB12(ffgtcs,FTGTCS,ftgtcs,FITSUNIT,INT,INT,PDOUBLE,PDOUBLE,PDOUBLE,PDOUBLE,PDOUBLE,PDOUBLE,PDOUBLE,PSTRING,PINT)
+FCALLSCSUB13(ffwldp,FTWLDP,ftwldp,DOUBLE,DOUBLE,DOUBLE,DOUBLE,DOUBLE,DOUBLE,DOUBLE,DOUBLE,DOUBLE,STRING,PDOUBLE,PDOUBLE,PINT)
+FCALLSCSUB13(ffxypx,FTXYPX,ftxypx,DOUBLE,DOUBLE,DOUBLE,DOUBLE,DOUBLE,DOUBLE,DOUBLE,DOUBLE,DOUBLE,STRING,PDOUBLE,PDOUBLE,PINT)
+
+/*------------------- Conversion Utilities -----------------*/
+/*                 (prototyped in fitsio2.h)                */
+/*----------------------------------------------------------*/
+
+CFextern VOID_cfF(FTI2C,fti2c)
+CFARGT14(NCF,DCF,ABSOFT_cf2(VOID),LONG,PSTRING,PINT,CF_0,CF_0,CF_0,CF_0,CF_0,CF_0,CF_0,CF_0,CF_0,CF_0,CF_0));
+CFextern VOID_cfF(FTI2C,fti2c)
+CFARGT14(NCF,DCF,ABSOFT_cf2(VOID),LONG,PSTRING,PINT,CF_0,CF_0,CF_0,CF_0,CF_0,CF_0,CF_0,CF_0,CF_0,CF_0,CF_0))
+{
+   QCF(LONG,1)
+   QCF(PSTRING,2)
+   QCF(PINT,3)
+   char str[21];
+
+   ffi2c( TCF(fti2c,LONG,1,0) 
+          TCF(fti2c,PSTRING,2,1) 
+          TCF(fti2c,PINT,3,1) );
+
+   sprintf(str,"%20s",B2);
+   strcpy(B2,str);
+
+   RCF(LONG,1)
+   RCF(PSTRING,2)
+   RCF(PINT,3)
+}
+
+CFextern VOID_cfF(FTL2C,ftl2c)
+CFARGT14(NCF,DCF,ABSOFT_cf2(VOID),LOGICAL,PSTRING,PINT,CF_0,CF_0,CF_0,CF_0,CF_0,CF_0,CF_0,CF_0,CF_0,CF_0,CF_0));
+CFextern VOID_cfF(FTL2C,ftl2c)
+CFARGT14(NCF,DCF,ABSOFT_cf2(VOID),LOGICAL,PSTRING,PINT,CF_0,CF_0,CF_0,CF_0,CF_0,CF_0,CF_0,CF_0,CF_0,CF_0,CF_0))
+{
+   QCF(LOGICAL,1)
+   QCF(PSTRING,2)
+   QCF(PINT,3)
+   char str[21];
+
+   ffl2c( TCF(ftl2c,LOGICAL,1,0) 
+          TCF(ftl2c,PSTRING,2,1) 
+          TCF(ftl2c,PINT,3,1) );
+
+   sprintf(str,"%20s",B2);
+   strcpy(B2,str);
+
+   RCF(LOGICAL,1)
+   RCF(PSTRING,2)
+   RCF(PINT,3)
+}
+
+FCALLSCSUB3(ffs2c,FTS2C,fts2c,STRING,PSTRING,PINT)
+
+CFextern VOID_cfF(FTR2F,ftr2f)
+CFARGT14(NCF,DCF,ABSOFT_cf2(VOID),FLOAT,INT,PSTRING,PINT,CF_0,CF_0,CF_0,CF_0,CF_0,CF_0,CF_0,CF_0,CF_0,CF_0));
+CFextern VOID_cfF(FTR2F,ftr2f)
+CFARGT14(NCF,DCF,ABSOFT_cf2(VOID),FLOAT,INT,PSTRING,PINT,CF_0,CF_0,CF_0,CF_0,CF_0,CF_0,CF_0,CF_0,CF_0,CF_0))
+{
+   QCF(FLOAT,1)
+   QCF(INT,2)
+   QCF(PSTRING,3)
+   QCF(PINT,4)
+   char str[21];
+
+   ffr2f( TCF(ftr2f,FLOAT,1,0) 
+          TCF(ftr2f,INT,2,1) 
+          TCF(ftr2f,PSTRING,3,1) 
+          TCF(ftr2f,PINT,4,1) );
+
+   sprintf(str,"%20s",B3);
+   strcpy(B3,str);
+
+   RCF(FLOAT,1)
+   RCF(INT,2)
+   RCF(PSTRING,3)
+   RCF(PINT,4)
+}
+
+CFextern VOID_cfF(FTR2E,ftr2e)
+CFARGT14(NCF,DCF,ABSOFT_cf2(VOID),FLOAT,INT,PSTRING,PINT,CF_0,CF_0,CF_0,CF_0,CF_0,CF_0,CF_0,CF_0,CF_0,CF_0));
+CFextern VOID_cfF(FTR2E,ftr2e)
+CFARGT14(NCF,DCF,ABSOFT_cf2(VOID),FLOAT,INT,PSTRING,PINT,CF_0,CF_0,CF_0,CF_0,CF_0,CF_0,CF_0,CF_0,CF_0,CF_0))
+{
+   QCF(FLOAT,1)
+   QCF(INT,2)
+   QCF(PSTRING,3)
+   QCF(PINT,4)
+   char str[21];
+
+   ffr2e( TCF(ftr2e,FLOAT,1,0) 
+          TCF(ftr2e,INT,2,1) 
+          TCF(ftr2e,PSTRING,3,1) 
+          TCF(ftr2e,PINT,4,1) );
+
+   sprintf(str,"%20s",B3);
+   strcpy(B3,str);
+
+   RCF(FLOAT,1)
+   RCF(INT,2)
+   RCF(PSTRING,3)
+   RCF(PINT,4)
+}
+
+CFextern VOID_cfF(FTD2F,ftd2f)
+CFARGT14(NCF,DCF,ABSOFT_cf2(VOID),DOUBLE,INT,PSTRING,PINT,CF_0,CF_0,CF_0,CF_0,CF_0,CF_0,CF_0,CF_0,CF_0,CF_0));
+CFextern VOID_cfF(FTD2F,ftd2f)
+CFARGT14(NCF,DCF,ABSOFT_cf2(VOID),DOUBLE,INT,PSTRING,PINT,CF_0,CF_0,CF_0,CF_0,CF_0,CF_0,CF_0,CF_0,CF_0,CF_0))
+{
+   QCF(DOUBLE,1)
+   QCF(INT,2)
+   QCF(PSTRING,3)
+   QCF(PINT,4)
+   char str[21];
+
+   ffd2f( TCF(ftd2f,DOUBLE,1,0) 
+          TCF(ftd2f,INT,2,1) 
+          TCF(ftd2f,PSTRING,3,1) 
+          TCF(ftd2f,PINT,4,1) );
+
+   sprintf(str,"%20s",B3);
+   strcpy(B3,str);
+
+   RCF(DOUBLE,1)
+   RCF(INT,2)
+   RCF(PSTRING,3)
+   RCF(PINT,4)
+}
+
+CFextern VOID_cfF(FTD2E,ftd2e)
+CFARGT14(NCF,DCF,ABSOFT_cf2(VOID),DOUBLE,INT,PSTRING,PINT,PINT,CF_0,CF_0,CF_0,CF_0,CF_0,CF_0,CF_0,CF_0,CF_0));
+CFextern VOID_cfF(FTD2E,ftd2e)
+CFARGT14(NCF,DCF,ABSOFT_cf2(VOID),DOUBLE,INT,PSTRING,PINT,PINT,CF_0,CF_0,CF_0,CF_0,CF_0,CF_0,CF_0,CF_0,CF_0))
+{
+   QCF(DOUBLE,1)
+   QCF(INT,2)
+   QCF(PSTRING,3)
+   QCF(PINT,4)
+   QCF(PINT,5)
+   char str[21];
+   int *vlen;
+
+   vlen = TCF(ftd2e,PINT,4,0);
+
+   /*  C version of routine doesn't use the 4th parameter, vlen  */
+   ffd2e( TCF(ftd2e,DOUBLE,1,0) 
+          TCF(ftd2e,INT,2,1) 
+          TCF(ftd2e,PSTRING,3,1) 
+          TCF(ftd2e,PINT,5,1) );
+
+   *vlen = strlen(B3);
+   if ( *vlen<20 ) {
+      sprintf(str,"%20s",B3);  /* right justify if vlen<20 characters */
+      strcpy(B3,str);
+      *vlen = 20;
+   }
+
+   RCF(DOUBLE,1)
+   RCF(INT,2)
+   RCF(PSTRING,3)
+   RCF(PINT,4)
+   RCF(PINT,5)
+}
+
+FCALLSCSUB3(ffc2ii,FTC2II,ftc2ii,STRING,PLONG,PINT)
+FCALLSCSUB3(ffc2ll,FTC2LL,ftc2ll,STRING,PINT,PINT)
+FCALLSCSUB3(ffc2rr,FTC2RR,ftc2rr,STRING,PFLOAT,PINT)
+FCALLSCSUB3(ffc2dd,FTC2DD,ftc2dd,STRING,PDOUBLE,PINT)
+FCALLSCSUB7(ffc2x,FTC2X,ftc2x,STRING,PSTRING,PLONG,PINT,PSTRING,PDOUBLE,PINT)
+FCALLSCSUB3(ffc2s,FTC2S,ftc2s,STRING,PSTRING,PINT)
+FCALLSCSUB3(ffc2i,FTC2I,ftc2i,STRING,PLONG,PINT)
+FCALLSCSUB3(ffc2r,FTC2R,ftc2r,STRING,PFLOAT,PINT)
+FCALLSCSUB3(ffc2d,FTC2D,ftc2d,STRING,PDOUBLE,PINT)
+FCALLSCSUB3(ffc2l,FTC2L,ftc2l,STRING,PINT,PINT)
+
+/*------------------ Byte-level read/seek/write -----------------*/
+/*                   (prototyped in fitsio2.h)                   */
+/*---------------------------------------------------------------*/
+
+/*
+  ffmbyt should not be called by any application programs, so
+  the wrapper should not need to be defined.  If it is needed then
+  the second parameter (LONG) will need to be changed to the
+  equivalent of the C 'off_t' type, which may be 32 or 64 bits long
+  depending on the compiler.
+  -W.Pence (7/21/00)
+  
+FCALLSCSUB4(ffmbyt,FTMBYT,ftmbyt,FITSUNIT,LONG,LOGICAL,PINT)
+*/
+
+FCALLSCSUB4(ffgbyt,FTGCBF,ftgcbf,FITSUNIT,LONG,PVOID,PINT)
+FCALLSCSUB4(ffgbyt,FTGBYT,ftgbyt,FITSUNIT,LONG,PVOID,PINT)
+
+FCALLSCSUB4(ffpbyt,FTPCBF,ftpcbf,FITSUNIT,LONG,PVOID,PINT)
+FCALLSCSUB4(ffpbyt,FTPBYT,ftpbyt,FITSUNIT,LONG,PVOID,PINT)
+
+
+/*-------------- Additional missing FITSIO routines -------------*/
+/*                   (abandoned in CFITSIO)                      */
+/*---------------------------------------------------------------*/
+
+void Cffcrep( char *comm, char *comm1, int *repeat );
+void Cffcrep( char *comm, char *comm1, int *repeat )
+{
+/*
+   check if the first comment string is to be repeated for all keywords
+   (if the last non-blank character is '&', then it is to be repeated)
+
+   comm    input comment string
+   OUTPUT PARAMETERS:
+   comm1   output comment string, = COMM minus the last '&' character
+   repeat  TRUE if the last character of COMM was the '&' character
+
+   written by Wm Pence, HEASARC/GSFC, June 1991
+   translated to C by Peter Wilson, HSTX/GSFC, Oct 1997
+*/
+
+   int len;
+
+   *repeat=FALSE;
+   len=strlen(comm);
+       /* cfortran strips trailing spaces so only check last character  */
+   if( len && comm[ len-1 ]=='&' ) {
+      strncpy(comm1,comm,len-1);  /*  Don't copy '&'  */
+      comm1[len-1]='\0';
+      *repeat=TRUE;
+   }
+   return;
+}
+FCALLSCSUB3(Cffcrep,FTCREP,ftcrep,STRING,PSTRING,PLOGICAL)
+
+
+/*------------------ Test floats for NAN values -----------------*/
+/*                     (defined in fitsio2.h)                    */
+/*---------------------------------------------------------------*/
+
+int Cfnan( float *val );
+int Cfnan( float *val )
+{
+   int code;
+
+#if BYTESWAPPED
+   short *sptr = (short*)val + 1;
+#else
+   short *sptr = (short*)val;
+#endif
+
+   code = fnan(*sptr);
+   if( code==2 ) *val = 0.0;   /* Underflow */
+
+   return( code!=0 );
+}
+FCALLSCFUN1(LOGICAL,Cfnan,FTTRNN,fttrnn,PFLOAT)
+
+
+int Cdnan( double *val );
+int Cdnan( double *val )
+{
+   int code;
+
+#if BYTESWAPPED
+   short *sptr = (short*)val + 3;
+#else
+   short *sptr = (short*)val;
+#endif
+
+   code = dnan(*sptr);
+   if( code==2 ) *val = 0.0;   /* Underflow */
+
+   return( code!=0 );
+}
+FCALLSCFUN1(LOGICAL,Cdnan,FTTDNN,fttdnn,PDOUBLE)
+
+/*-------- Functions no longer supported... normally redundant -----------*/
+/*                Included only to support older code                     */
+/*------------------------------------------------------------------------*/
+
+void Cffempty(void);
+void Cffempty(void)
+{ return; }
+FCALLSCSUB0(Cffempty,FTPDEF,ftpdef)
+FCALLSCSUB0(Cffempty,FTBDEF,ftbdef)
+FCALLSCSUB0(Cffempty,FTADEF,ftadef)
+FCALLSCSUB0(Cffempty,FTDDEF,ftddef)
+
+
+/*-------- Functions which use the lex and yacc/bison parser code -----------*/
+/*---------------------------------------------------------------------------*/
+
+#define fttexp_LONGV_A7 A3
+FCALLSCSUB8(fftexp,FTTEXP,fttexp,FITSUNIT,STRING,INT,PINT,PLONG,PINT,LONGV,PINT)
+
+#define ftfrow_LOGV_A6 A4
+FCALLSCSUB7(fffrow,FTFROW,ftfrow,FITSUNIT,STRING,LONG,LONG,PLONG,LOGICALV,PINT)
+
+#define ftfrwc_LOGV_A8 A6
+FCALLSCSUB9(fffrwc,FTFRWC,ftfrwc,FITSUNIT,STRING,STRING,STRING,STRING,LONG,DOUBLEV,LOGICALV,PINT)
+FCALLSCSUB4(ffffrw,FTFFRW,ftffrw,FITSUNIT,STRING,PLONG,PINT)
+
+FCALLSCSUB4(ffsrow,FTSROW,ftsrow,FITSUNIT,FITSUNIT,STRING,PINT)
+FCALLSCSUB9(ffcrow,FTCROW,ftcrow,FITSUNIT,INT,STRING,LONG,LONG,PVOID,PVOID,PLOGICAL,PINT)
+FCALLSCSUB6(ffcalc,FTCALC,ftcalc,FITSUNIT,STRING,FITSUNIT,STRING,STRING,PINT)
+
+#define ftcalc_rng_LONGV_A7 A6
+#define ftcalc_rng_LONGV_A8 A6
+FCALLSCSUB9(ffcalc_rng,FTCALC_RNG,ftcalc_rng,FITSUNIT,STRING,FITSUNIT,STRING,STRING,INT,LONGV,LONGV,PINT)
+
+/*--------------------- grouping routines ------------------*/
+
+FCALLSCSUB4(ffgtcr,FTGTCR,ftgtcr,FITSUNIT,STRING,INT,PINT)
+FCALLSCSUB4(ffgtis,FTGTIS,ftgtis,FITSUNIT,STRING,INT,PINT)
+FCALLSCSUB3(ffgtch,FTGTCH,ftgtch,FITSUNIT,INT,PINT)
+FCALLSCSUB3(ffgtrm,FTGTRM,ftgtrm,FITSUNIT,INT,PINT)
+FCALLSCSUB4(ffgtcp,FTGTCP,ftgtcp,FITSUNIT,FITSUNIT,INT,PINT)
+FCALLSCSUB4(ffgtmg,FTGTMG,ftgtmg,FITSUNIT,FITSUNIT,INT,PINT)
+FCALLSCSUB3(ffgtcm,FTGTCM,ftgtcm,FITSUNIT,INT,PINT)
+FCALLSCSUB3(ffgtvf,FTGTVF,ftgtvf,FITSUNIT,PLONG,PINT)
+FCALLSCSUB4(ffgtop,FTGTOP,ftgtop,FITSUNIT,INT,PFITSUNIT,PINT)
+FCALLSCSUB4(ffgtam,FTGTAM,ftgtam,FITSUNIT,FITSUNIT,INT,PINT)
+FCALLSCSUB3(ffgtnm,FTGTNM,ftgtnm,FITSUNIT,PLONG,PINT)
+FCALLSCSUB3(ffgmng,FTGMNG,ftgmng,FITSUNIT,PLONG,PINT)
+FCALLSCSUB4(ffgmop,FTGMOP,ftgmop,FITSUNIT,LONG,PFITSUNIT,PINT)
+FCALLSCSUB5(ffgmcp,FTGMCP,ftgmcp,FITSUNIT,FITSUNIT,LONG,INT,PINT)
+FCALLSCSUB5(ffgmtf,FTGMTF,ftgmtf,FITSUNIT,FITSUNIT,LONG,INT,PINT)
+FCALLSCSUB4(ffgmrm,FTGMRM,ftgmrm,FITSUNIT,LONG,INT,PINT)