/****************************************************************************
**
*A pga_vars.h ANUPQ source Eamonn O'Brien
**
*Y Copyright 1995-2001, Lehrstuhl D fuer Mathematik, RWTH Aachen, Germany
*Y Copyright 1995-2001, School of Mathematical Sciences, ANU, Australia
**
*/
/* definition file for structure used in p-group generation */
#ifndef ANUPQ_PGA_VARS_H
#define ANUPQ_PGA_VARS_H
struct pga_vars {
int p; /* prime */
int ndgen; /* rank of Frattini quotient */
int multiplicator_rank; /* rank of p-multiplicator */
int nuclear_rank; /* rank of nucleus */
int step_size; /* step size */
/* values of the above parameters relative to
chosen characteristic subgroup */
int q;
int r;
int s;
Logical final_stage; /* indicates whether in intermediate stage */
Logical capable; /* indicates whether group is capable */
int fixed; /* number of generators of the p-multiplicator
which cannot be eliminated */
int m; /* number of automorphisms */
int nmr_centrals; /* number of central automorphisms */
int nmr_stabilisers; /* number of generators for stabiliser */
int Degree; /* degree of permutation group */
int *powers; /* store powers of prime */
int *inverse_modp; /* store inverses of 0 .. p - 1 */
int *list; /* list of definition sets */
int *available; /* number of available positions for each set */
int *offset; /* offset for each definition set */
int nmr_def_sets; /* number of definition sets */
int nmr_subgroups; /* number of subgroups processed */
int *rep; /* list of orbit representatives */
int nmr_orbits; /* number of orbits */
int nmr_of_descendants; /* number of immediate descendants */
int nmr_of_capables; /* number of capable immediate descendants */
int *relative;
int nmr_soluble;
int *map; /* map from automorphisms to permutations */
int nmr_of_perms; /* number of permutations */
/* series of print flags */
Logical print_extensions;
Logical print_automorphism_matrix;
Logical print_degree;
Logical print_permutation;
Logical print_subgroup;
Logical print_reduced_cover;
Logical print_group;
Logical print_nuclear_rank;
Logical print_multiplicator_rank;
Logical print_orbits;
Logical print_orbit_summary;
Logical print_orbit_arrays;
Logical print_commutator_matrix;
Logical print_automorphisms;
Logical print_automorphism_order;
Logical print_stabiliser_array;
Logical trace; /* trace details of algorithm */
/* algorithm flags */
Logical space_efficient;
Logical soluble;
Logical combined;
Logical terminal; /* completely process terminal descendants */
Logical metabelian; /* ensure descendant is metabelian */
int exponent_law; /* ensure descendant satisfies exponent law */
int orbit_size; /* total orbit size in constructing group */
Logical dummy1; /* dummy variables */
Logical dummy2;
Logical upper_bound; /* only automorphism group order upper
bound stored */
#ifdef HAVE_GMP
MP_INT aut_order; /* order of automorphism group */
#endif
};
#endif
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