/* generates a safe pointer to energy in line array with energy
 * given by the first argument (Rydbergs).  The second is a label that
 * will be placed at that energy if none have yet been set.  The last
 * is the energy of the next higher continuum.  the code will make sure
 * that the pointer is not within this continuum - that would create
 * serious energy problems */
long ipLinSafe(double energy ,char* chString , long ipIonEnergy );