+ t_atom *ai,t_atom *aj,t_atom *ak,u8 bc);
+int albe_mult_check_2b_bond(t_moldyn *moldyn,t_atom *itom,t_atom *jtom,u8 bc);
+/* fast */
+int albe_potential_force_calc(t_moldyn *moldyn);
+
+/* albe potential parameter defines */
+
+// silicon
+#define ALBE_R_SI (2.82-0.14)
+#define ALBE_S_SI (2.82+0.14)
+#define ALBE_A_SI (3.24*EV/0.842)
+#define ALBE_B_SI (-1.842*3.24*EV/0.842)
+#define ALBE_R0_SI 2.232
+#define ALBE_LAMBDA_SI (1.4761*sqrt(2.0*1.842))
+#define ALBE_MU_SI (1.4761*sqrt(2.0/1.842))
+#define ALBE_GAMMA_SI 0.114354
+#define ALBE_C_SI 2.00494
+#define ALBE_D_SI 0.814719
+#define ALBE_H_SI 0.259
+#define ALBE_LC_SI 5.429
+
+// carbon
+#define ALBE_R_C (2.00-0.15)
+#define ALBE_S_C (2.00+0.15)
+#define ALBE_A_C (6.00*EV/1.1671419)
+#define ALBE_B_C (-2.1671419*6.00*EV/1.1671419)
+#define ALBE_R0_C 1.4276442
+#define ALBE_LAMBDA_C (2.0099457*sqrt(2.0*2.1671419))
+#define ALBE_MU_C (2.0099457*sqrt(2.0/2.1671419))
+#define ALBE_GAMMA_C 0.1123327
+#define ALBE_C_C 181.9100526
+#define ALBE_D_C 6.2843249
+#define ALBE_H_C 0.5556181
+#define ALBE_LC_C 3.566
+
+// mixed: silicon carbide
+#define ALBE_R_SIC (2.40-0.20)
+#define ALBE_S_SIC (2.40+0.20)
+#define ALBE_A_SIC (4.36*EV/0.8474739)
+#define ALBE_B_SIC (-1.8474739*4.36*EV/0.8474739)
+#define ALBE_R0_SIC 1.79
+#define ALBE_LAMBDA_SIC (1.6990751*sqrt(2.0*1.8474739))
+#define ALBE_MU_SIC (1.6990751*sqrt(2.0/1.8474739))
+#define ALBE_GAMMA_SIC 0.0118769
+#define ALBE_C_SIC 273986.61
+#define ALBE_D_SIC 180.31411
+#define ALBE_H_SIC 0.68
+#define ALBE_LC_SIC 4.359