lp_solve/lp_solve_5.5/lp_presolve.c

2655   REAL      Coeff1, Coeff2, Value1, Value2, lobound, upbound, bound, test, product,  local
2703     Coeff1 = ROW_MAT_VALUE(jjx);
2708     if((fabs(Coeff1) < psdata->epspivot*mat->colmax[jx]) &&
2709        ((fabs(Coeff1) != 1) && (fabs(Coeff2) != 1)) &&
2739            (fabs(Coeff1) > psdata->epspivot*mat->colmax[jx]))
2747         Value2 = Coeff1/Coeff2;
2755            (fabs(modf(Coeff1, &Value2)) < lp->epsvalue))
2758                  (fabs(fabs(Coeff1)-1) < lp->epsvalue))
2770       swapREAL(&Coeff1, &Coeff2);
2774     Value2 = Coeff1/Coeff2;          /* Delta variable term */
2779       report(lp, DETAILED, "          Keep %g %s - %d\n",    Coeff1, get_col_name(lp, jjx), jjx);
2803       bound = (lp->orig_rhs[i] - Coeff2*bound) / Coeff1;
2825       bound = (lp->orig_rhs[i] - Coeff2*bound) / Coeff1;