RkPrev - set the previous candidate as the current candidate

RkPrev  sets  the  previous  candidate as the current candidate or, if the current candidate is the first
       candidate, moves to the last candidate.

RkPrev - set the previous candidate as the current candidate

       If successful, this function moves the current candidate in the context and returns the current candidate
       number after the move.  It returns 0, without doing anything, if it has been run in a nonconversion  mode
       context.

                                                                                                       RKPREV(3)

#include<canna/RK.h>intRkPrev(cxnum)intcxnum;