XBT_WARN("Max Deviation from optimal solution : %g", max_deviation);
XBT_WARN("Found x = %1.20f", x);
XBT_WARN("Deviation from optimal solution (R_1 = %g): %1.20f", x,
XBT_WARN("Max Deviation from optimal solution : %g", max_deviation);
XBT_WARN("Found x = %1.20f", x);
XBT_WARN("Deviation from optimal solution (R_1 = %g): %1.20f", x,