| Quellcodebibliothek Statistik Leitseite products/sources/formale Sprachen/GAP/pkg/anupq/src/ (Algebra von RWTH Aachen Version 4.15.1©) Datei vom 28.7.2025 mit Größe 1 kB |
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Quelle step_range.c Sprache: C |
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** *A step_range.c 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 ** */ #include "pq_defs.h" #include "pcp_vars.h" #include "pga_vars.h" /* find the range of permitted step sizes */ void step_range(int k, int *lower_step, int *upper_step, int ***auts, struct pga_vars *pga, struct pcp_vars *pcp) { /* the k-initial segment subgroup must include those generators previously fixed */ k = MAX(k, pga->fixed); /* find the rank of the characteristic closure of k-initial segment subgroup of the p-multiplicator */ pga->q = close_subgroup(k, auts, pga, pcp); /* what is the rank of the relative nucleus? */ pga->r = MIN(pga->q, pga->nuclear_rank); /* is the rank of the subgroup < nuclear rank? */ if (pga->q < pga->nuclear_rank) *lower_step = MAX(pga->fixed, pga->step_size + pga->q - pga->nuclear_rank); else *lower_step = pga->step_size; *upper_step = MIN(pga->step_size, pga->q); } ¤ Dauer der Verarbeitung: 0.12 Sekunden (vorverarbeitet) ¤*© Formatika GbR, Deutschland |
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2026-03-28