void spA_dnB_dnC_seq_ctr(char const *alpha, char const *A, int64_t size_A, algstrct const *sr_A, int order_A, int const *edge_len_A, int const *sym_A, int const *idx_map_A, char const *B, algstrct const *sr_B, int order_B, int const *edge_len_B, int const *sym_B, int const *idx_map_B, char const *beta, char *C, algstrct const *sr_C, int order_C, int const *edge_len_C, int const *sym_C, int const *idx_map_C, bivar_function const *func)