source: issm/trunk/src/c/SplitSolutionVectorx/SplitSolutionVectorx.cpp@ 3775

/*!\file SplitSolutionVectorx
 */

#include "./SplitSolutionVectorx.h"
#include "../shared/shared.h"

void SplitSolutionVectorx(Vec u_g,int numberofnodes,int numberofdofs, ...){
        
        /*http://www.dreamincode.net/forums/topic/79104-variadic-functions-or-how-printf-works */

        /*Intermediary*/
        va_list  outputlist;
        double*  u_g_serial=NULL;
        double** pvector;
        int     i,count;

        /*Serialize vector and allocate once for all*/
        VecToMPISerial(&u_g_serial,u_g);

        /* va_start() takes the arg list type we just declared, as well
        as the last argument in this function's definition, ie. 'int numberofdofs'*/
        va_start(outputlist,numberofdofs);

        /*Loop over the arguments*/
        count=0;
        while (count<numberofdofs){
                /* va_arg() takes the arg list from above, and the type
                the argument is supposed to be and then (hopefully) returns it*/
                pvector=va_arg(outputlist,double**);

                //continue if the pointer is NULL (output not requested)
                if (pvector==NULL) continue;

                /*Dynamically allocate single dof vector*/
                double* vector=NULL;
                vector=(double*)xmalloc(numberofnodes*sizeof(double));

                /*Fill vector*/
                for (i=0;i<numberofnodes;i++) vector[i]=u_g_serial[i*numberofdofs+count];

                /*Assign vector*/
                *pvector=vector;

                /*update counter*/
                count++;
        }
        va_end (outputlist);
}