Abstract

   CSPICE_RPD returns the value of the constant pi/180 which represents
   the number of radians per degree of arc.

I/O

   The call:

      [rpd] = cspice_rpd

   returns:

      rpd      the number of radians per degree: pi/180.

               [1,1] = size(rpd); double = class(rpd)

               The value of pi is determined by the acos function. That
               is,

                     rpd = acos ( -1.0 ) / 180.0;

Parameters

   None.

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.

   1) Print the number of radians per degree of arc.

      Example code begins here.


      function rpd_ex1()

         %
         % Output the number of radians per degree, with 21.18 precision
         %
         fprintf( 'Radians per degree: %21.18f\n', cspice_rpd )


      When this program was executed on a Mac/Intel/Octave6.x/64-bit
      platform, the output was:


      Radians per degree:  0.017453292519943295

Particulars

   The first time the function is referenced, the value is computed
   as shown above. The value is saved, and returned directly upon
   subsequent reference.

Exceptions

   Error free.

Files

   None.

Restrictions

   None.

Required_Reading

   MICE.REQ

Literature_References

   None.

Author_and_Institution

   J. Diaz del Rio     (ODC Space)
   E.D. Wright         (JPL)

Version

   -Mice Version 1.1.0, 25-AUG-2021 (EDW) (JDR)

       Edited the header to comply with NAIF standard. Adde complete code
       example.

       Added -Parameters, -Particulars, -Exceptions, -Files, -Restrictions,
       -Literature_References and -Author_and_Institution sections.

       Eliminated use of "lasterror" in rethrow.

       Removed reference to the function's corresponding CSPICE header from
       -Required_Reading section.

   -Mice Version 1.0.1, 11-JUN-2013 (EDW)

       -I/O descriptions edits to conform to Mice documentation format.

   -Mice Version 1.0.0, 22-NOV-2005 (EDW)

Index_Entries

   radians per degree