Procedure

   SpiceBoolean bodfnd_c ( SpiceInt           body,
                           ConstSpiceChar   * item )

Abstract

   Determine whether values exist for some item for any body
   in the kernel pool.

Required_Reading

   KERNEL
   NAIF_IDS
   PCK

Keywords

   CONSTANTS

Brief_I/O

   VARIABLE  I/O  DESCRIPTION
   --------  ---  --------------------------------------------------
   body       I   ID code of body.
   item       I   Item to find ("RADII", "NUT_AMP_RA", etc.).

   The function returns the value SPICETRUE if the item is in the
   kernel pool, and is SPICEFALSE if it is not.

Detailed_Input

   body       is the ID code of the body for which the item is
              requested. Bodies are numbered according to the
              standard NAIF numbering scheme.

   item       is the item to be returned. Together, the body and
              item name combine to form a variable name, e.g.,

                    "BODY599_RADII"
                    "BODY4_POLE_RA"

Detailed_Output

   The function returns the value SPICETRUE if the item is in the
   kernel pool, and is SPICEFALSE if it is not.

Parameters

   None.

Exceptions

   Error free.

Files

   None.

Particulars

   The CSPICE routines bodvcd_c and bodvrd_c, which return values from
   the kernel pool, signal an error if the specified item is not found.
   In many cases, this is appropriate. However, sometimes the program
   may attempt to recover, by providing default values, prompting for
   replacements, and so on.

Examples

   In the following example, default values are substituted for
   bodies for which radii are not found.

      #include "SpiceUsr.h"
          ...
      SpiceDouble          radii[3];
      SpiceInt             n;
      SpiceInt             target;
          ...

      if ( bodfnd_c ( target, "RADII" ) )
      {
         bodvcd_c ( target, "AXES", 3, &n, radii );
      }
      else
      {
         vpack_c ( 100.0, 100.0, 100.0, radii );
      }

Restrictions

   None.

Literature_References

   None.

Author_and_Institution

   N.J. Bachman    (JPL)
   H.A. Neilan     (JPL)
   W.L. Taber      (JPL)
   I.M. Underwood  (JPL)
   E.D. Wright     (JPL)

Version

   -CSPICE Version 2.0.2, 24-OCT-2005 (NJB)

       Header updates: reference to bodvar_c was replaced with
       reference to bodvcd_c.  The string "AXES" and variable `axes'
       were replaced with the string "RADII" and variable `radii'
       throughout the header.  A few other minor header edits were
       made.

   -CSPICE Version 2.0.1, 08-FEB-1998 (EDW)

       Corrected and clarified header entries.

   -CSPICE Version 2.0.0, 06-JAN-1998 (NJB)

       Input argument item was changed to type ConstSpiceChar *.

       References to C2F_CreateStr_Sig were removed; code was
       cleaned up accordingly.  String checks are now done using
       the macro CHKFSTR_VAL.

   -CSPICE Version 1.0.0, 25-OCT-1997 (EDW)

Index_Entries

   find constants for a body in the kernel pool

Link to routine bodfnd_c source file bodfnd_c.c