C++ (Cpp) spx_eval_tij Examples

Example #1

File: spxlp.c Project: firedrakeproject/glpk

void spx_eval_trow(SPXLP *lp, const double rho[/*1+m*/], double
      trow[/*1+n-m*/])
{     int m = lp->m;
      int n = lp->n;
      int j;
      for (j = 1; j <= n-m; j++)
         trow[j] = spx_eval_tij(lp, rho, j);
      return;
}

Example #2

File: spychuzr.c Project: TakeScoop/node-glpk

double spy_eval_gamma_i(SPXLP *lp, SPYSE *se, int i)
{     int m = lp->m;
      int n = lp->n;
      int *head = lp->head;
      char *refsp = se->refsp;
      double *rho = se->work;
      int j, k;
      double gamma_i, t_ij;
      xassert(se->valid);
      xassert(1 <= i && i <= m);
      k = head[i]; /* x[k] = xB[i] */
      gamma_i = (refsp[k] ? 1.0 : 0.0);
      spx_eval_rho(lp, i, rho);
      for (j = 1; j <= n-m; j++)
      {  k = head[m+j]; /* x[k] = xN[j] */
         if (refsp[k])
         {  t_ij = spx_eval_tij(lp, rho, j);
            gamma_i += t_ij * t_ij;
         }
      }
      return gamma_i;
}