ce2c_c</a> ( sc, et, &amp;sclkdp );
</PRE>
   encodes the ephemeris time ET as the double precision value `sclkdp'.
   SCLKDP need not be integral; even though non-integral tick values do not
   represent SCLK readings, they are permitted to avoid truncation error
   when representing ET as encoded SCLK.
<P>
 
   A parallel routine <a href="../cspice/sce2t_c.html">sce2t_c</a> converts ET to encoded SCLK, rounding the
   result to the nearest integral tick.
<P>
 
   The inverse conversion is provided by the 