void gfsstp_c ( SpiceDouble step )
Set the step size to be returned by gfstep_c.
VARIABLE I/O DESCRIPTION
-------- --- --------------------------------------------------
step I Time step to take.
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.
1) If the input step size is non-positive, the error
SPICE(INVALIDSTEP) is signaled. The stored step value
is not updated.
This routine sets the step size to be returned by the
next call to gfstep_c.
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,
N.J. Bachman (JPL)
W.L. Taber (JPL)
I.M. Underwood (JPL)
L.S. Elson (JPL)
E.D. Wright (JPL)
-CSPICE Version 2.0.1, 15-APR-2009 (LSE) (NJB)
GF set constant step size