// simple getters (for other getters see below)
- void GetSm(int sm, double * const a) {for (int i = 0; i < 6; i++) a[i] = fSm[sm][i];}
- void GetCh(int ch, double * const a) {for (int i = 0; i < 6; i++) a[i] = fCh[ch][i];}
+ void GetSm(int sm, double * const a) const {for (int i = 0; i < 6; i++) a[i] = fSm[sm][i];}
+ void GetCh(int ch, double * const a) const {for (int i = 0; i < 6; i++) a[i] = fCh[ch][i];}
// dumping on screen