Index of Functions: A B C D E F G H I J K L M N O P Q R S T U V W X
Index Page dafcls_c
Table of contents
Procedure Abstract Required_Reading Keywords Brief_I/O Detailed_Input | Detailed_Output Parameters Exceptions Files Particulars Examples | Restrictions Literature_References Author_and_Institution Version Index_Entries
#### Procedure
       dafcls_c ( DAF, close )

       void dafcls_c ( SpiceInt handle )
#### Abstract
       Close the DAF associated with a given handle.
#### Required_Reading
       DAF
#### Keywords
       DAF
       FILES
#### Brief_I/O
       VARIABLE  I/O  DESCRIPTION
       --------  ---  --------------------------------------------------
       handle     I   Handle of DAF to be closed.
#### Detailed_Input
       handle      is the file handle of a previously opened DAF file.
#### Detailed_Output
       None.
#### Parameters
       None.
#### Exceptions
       1)  If the specified handle is not known to the DAF subsystem
           (because it does not belong to a file opened via the DAF
           API), nothing happens.

       2)  If this routine is used to close a file whose handle is
           known to the DAF subsystem, and if the file handle is
           attached to a non-DAF file, an error is signaled by a routine
           in the call tree of this routine.
#### Files
       None.
#### Particulars
       Because the DAF subsystem must keep track of what files are open at
       any given time, it is important that DAF files be closed only with
       dafcls_c, to prevent the remaining DAF routines from failing,
       sometimes mysteriously.

       Note that when a file is opened more than once for read access,
       dafopr_c returns the same handle each time it is re-opened.
       Each time the file is closed, dafcls_c checks to see if any other
       claims on the file are still active before physically closing
       the file.
#### Examples
       The numerical results shown for these examples may differ across
       platforms. The results depend on the SPICE kernels used as
       input, the compiler and supporting libraries, and the machine
       specific arithmetic implementation.

       1) In the following code fragment, the arrays in a file are
          examined in order to determine whether the file contains
          any arrays whose names begin with the word TEST.
          The complete names for these arrays are printed to
          the screen. The file is closed at the end of the search.

          #include "SpiceUsr.h"
              .
              .
              .
          dafopr_c ( fname, &handle );
          dafbfs_c ( handle );
          daffna_c ( &found );

          while ( found )
          {
             dafgn_c ( name );

             if (  strncmp( name, "TEST", 4 ) == 0  )
             {
                printf ( "%s\n", name );
             }
             daffna_c ( &found );
          }

          dafcls_c ( handle );

          Note that if the file has been opened already by a DAF routine
          at some other place in the calling program, it remains open.
          This makes it possible to examine files that have been opened
          for use by other modules without interfering with the operation
          of those routines.

       2) Use a simple routine to output the double precision and integer
          values stored in an SPK's segments descriptors. This function
          opens a DAF for read, performs a forwards search for the DAF
          arrays, prints segments description for each array found, then
          closes the DAF.

          Use the SPK kernel below as input DAF file for the program.

             de421.bsp

          Example code begins here.

          /.
             Program dafcls_ex1
          ./

          #include <stdio.h>
          #include "SpiceUsr.h"

          int main()
             {

             /.
             Local constants
             ./

             /.
             Define the summary parameters appropriate
             for an SPK file.
             ./

             #define ND              2
             #define NI              6
             #define MAXSUM          125

             SpiceInt                ic  [ NI ];
             SpiceInt                handle;

             SpiceDouble             dc  [ ND ];
             SpiceDouble             sum [ MAXSUM ];

             SpiceChar             * kernel = "de421.bsp";

             SpiceBoolean            found;

             /.
             Open a DAF for read. Return a `handle' referring to the file.
             ./
             dafopr_c ( kernel, &handle );

             /.
             Begin a forward search on the file.
             ./
             dafbfs_c ( handle );

             /.
             Search until a DAF array is found.
             ./
             daffna_c ( &found );

             /.
             Loop while the search finds subsequent DAF arrays.
             ./
             while ( found )
                {

                dafgs_c ( sum );
                dafus_c ( sum, ND, NI, dc, ic );

                printf( " Doubles: %f %f \n", dc[0], dc[1] );
                printf( "Integers: %d %d %d %d %d %d\n\n",
                           (int)ic[0], (int)ic[1], (int)ic[2],
                           (int)ic[3], (int)ic[4], (int)ic[5] );

                /.
                Check for another segment.
                ./
                daffna_c ( &found );
                }

             /.
             Safely close the DAF.
             ./
             dafcls_c ( handle  );

             return ( 0 );
             }

          When this program was executed on a Mac/Intel/cc/64-bit
          platform, the output was:

           Doubles: -3169195200.000000 1696852800.000000
          Integers: 1 0 1 2 641 310404

           Doubles: -3169195200.000000 1696852800.000000
          Integers: 2 0 1 2 310405 423048

           Doubles: -3169195200.000000 1696852800.000000
          Integers: 3 0 1 2 423049 567372

           Doubles: -3169195200.000000 1696852800.000000
          Integers: 4 0 1 2 567373 628976

           Doubles: -3169195200.000000 1696852800.000000
          Integers: 5 0 1 2 628977 674740

           Doubles: -3169195200.000000 1696852800.000000
          Integers: 6 0 1 2 674741 715224

           Doubles: -3169195200.000000 1696852800.000000
          Integers: 7 0 1 2 715225 750428

           Doubles: -3169195200.000000 1696852800.000000
          Integers: 8 0 1 2 750429 785632

           Doubles: -3169195200.000000 1696852800.000000
          Integers: 9 0 1 2 785633 820836

           Doubles: -3169195200.000000 1696852800.000000
          Integers: 10 0 1 2 820837 944040

           Doubles: -3169195200.000000 1696852800.000000
          Integers: 301 3 1 2 944041 1521324

           Doubles: -3169195200.000000 1696852800.000000
          Integers: 399 3 1 2 1521325 2098608

           Doubles: -3169195200.000000 1696852800.000000
          Integers: 199 1 1 2 2098609 2098620

           Doubles: -3169195200.000000 1696852800.000000
          Integers: 299 2 1 2 2098621 2098632

           Doubles: -3169195200.000000 1696852800.000000
          Integers: 499 4 1 2 2098633 2098644

          Note, the final entries in the integer array contains the
          segment start/end indexes. The output indicates the search
          proceeded from the start of the file (low value index) towards
          the end (high value index).
#### Restrictions
       None.
#### Literature_References
       None.
#### Author_and_Institution
       N.J. Bachman        (JPL)
       J. Diaz del Rio     (ODC Space)
       K.R. Gehringer      (JPL)
       W.L. Taber          (JPL)
       I.M. Underwood      (JPL)
       E.D. Wright         (JPL)
#### Version
       -CSPICE Version 1.0.4, 10-AUG-2021 (JDR)

           Edited the header to comply with NAIF standard.

       -CSPICE Version 1.0.3, 28-JUN-2016 (EDW)

           Edit to Example code, SpiceInts output as ints using
           explicit casting.

       -CSPICE Version 1.0.2, 10-OCT-2012 (EDW)

           Added a functional code example to the -Examples section.

           Removed the obsolete Reference citation to "NAIF
           Document 167.0."

       -CSPICE Version 1.0.1, 28-JAN-2004 (NJB)

           Header update: the -Exceptions section now lists the
           case of attempting to close a non-DAF file using this
           routine.

       -CSPICE Version 1.0.0, 01-AUG-1999 (NJB) (KRG) (WLT) (IMU)
#### Index_Entries
       close DAF
#### Link to routine dafcls_c source file dafcls_c.c

    Fri Dec 31 18:41:03 2021