Procedure

   gfsstp_c ( Geometry finder set step size ) 

   void gfsstp_c ( SpiceDouble  step )

Abstract

   Set the step size to be returned by gfstep_c.

Required_Reading

   GF
   TIME

Keywords

   GEOMETRY
   SEARCH
   UTILITY

Brief_I/O

   VARIABLE  I/O  DESCRIPTION
   --------  ---  --------------------------------------------------
   step       I   Time step to take.

Detailed_Input

   step        is the output step size to be returned by the next call
               to gfstep_c. Units are TDB seconds.

               `step' is used in the GF search root-bracketing process.
               `step' indicates how far to advance the gfstep_c input
               argument `time' so that `time' and time+step may bracket a
               state transition and definitely do not bracket more than
               one state transition.

Detailed_Output

   None.

Parameters

   None.

Exceptions

   1)  If the input step size is non-positive, the error
       SPICE(INVALIDSTEP) is signaled by a routine in the call tree
       of this routine. The stored step value is not updated.

Files

   None.

Particulars

   This routine sets the step size to be returned by the
   next call to gfstep_c.

Examples

   1) User applications can pass gfstep_c to mid-level GF API routines
      expecting a step size routine as an input argument. Before such
      a call is made, the value of the step to be returned by gfstep_c
      must be set via a call to this routine.

      For example, the GF API routine gfocce_c can be called as shown
      in the code fragment below.

            /.
            Select a twenty-second step. We'll ignore any occultations
            lasting less than 20 seconds.
            ./
            step = 20.0;
            gfsstp_c ( step );

            /.
            Perform the search.
            ./
            gfocce_c ( "ANY",
                       "MOON",     "ellipsoid",  "IAU_MOON",
                       "SUN",      "ellipsoid",  "IAU_SUN",
                       "LT",       "EARTH",      CNVTOL,
                       gfstep_c,   gfrefn_c,     rpt,
                       gfrepi_c,   gfrepu_c,     gfrepf_c,
                       bail,       gfbail_c,     cnfine,
                       &result                              );

Restrictions

   None.

Literature_References

   None.

Author_and_Institution

   N.J. Bachman        (JPL)
   J. Diaz del Rio     (ODC Space)
   L.S. Elson          (JPL)

Version

   -CSPICE Version 1.0.1, 06-AUG-2021 (JDR)

       Edited the header to comply with NAIF standard.

   -CSPICE Version 1.0.0, 15-APR-2009 (LSE) (NJB)

Index_Entries

   GF set constant step size