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Abstract
I/O
Examples
Particulars
Required Reading
Version
Index_Entries

Abstract


   CSPICE_CLIGHT returns the double precision value for the constant
   speed of light in a vacuum (IAU official value, in km/sec).

   For important details concerning this module's function, please refer to
   the CSPICE routine clight_c.

I/O

   
   Given:
   
      No input required.
   
   the call:
   
      speed_of_light = cspice_clight()
   
   returns:
   
      A double precision scalar, the IAU official value for the 
      speed of light in vacuo: 299792.458 km/sec.
   

Examples


   Any numerical results shown for this example may differ between
   platforms as the results depend on the SPICE kernels used as input
   and the machine specific arithmetic implementation.

   
      print, cspice_clight()
   
   IDL outputs:   299792.46

Particulars


   None.

Required Reading


   ICY.REQ

Version


   -Icy Version 1.0.0, 16-JUN-2003, EDW (JPL)

Index_Entries


   measured velocity of light in a vacuum




Wed Apr  5 17:57:59 2017