//---------------------------------------------------------------------
//---------------------------------------------------------------------
#include "header.h"

void exact_solution(double xi,double eta,double zeta,double dtemp[]) {

//---------------------------------------------------------------------
//---------------------------------------------------------------------

//---------------------------------------------------------------------
//     this function returns the exact solution at point xi, eta, zeta  
//---------------------------------------------------------------------

      int m;
#define dtemp(m) dtemp[m-1]

      for (m = 1; m <= 5; m++) {
         dtemp(m) =  ce(m,1) +
           xi*(ce(m,2) + xi*(ce(m,5) + xi*(ce(m,8) + xi*ce(m,11)))) +
           eta*(ce(m,3) + eta*(ce(m,6) + eta*(ce(m,9) + eta*ce(m,12))))+
           zeta*(ce(m,4) + zeta*(ce(m,7) + zeta*(ce(m,10) + 
           zeta*ce(m,13))));
      }

      return;
}