Show test-RKBP.C syntax highlighted
// Copyright (C) 1994 The New York Group Theory Cooperative
// See magnus/doc/COPYRIGHT for the full notice.
// Contents: Test of RKBPackage.
// Should produce output identical to test-RKBPackage.mastertestout,
// given test-RKBPackage.data as input.
//
// Principal Author: Sarah Rees
//
// Status: in progress
//
// Revision History:
//
// XI/94: RN: Brought into line with project guidelines.
#include "RKBPackage.h"
#include "FPGroup.h"
#include "Set.h"
#include "Word.h"
// This runs the RKBPackage, estimates the growth rate of the group, and then
// reduces 10 words using the rewrite function of the RKBPackage (printing the
// reduced words).
// The input is a group presentation followed by 10 words, each terminated
// by a comma.
main()
{
do {
FPGroup G;
cin >> G;
if (G.numberOfGenerators()==0) break;
char ch;
VectorOf<int> order;
cin >> ch;
if (ch != '[') { cerr << "Unexpected input, aborted"<<endl; exit(1);}
do {
int i;
cin >> i;
order.append(i);
cin>> ch;
if (ch==']') break;
else if (ch!=','){ cerr << "Unexpected input, aborted"<<endl; exit(1);}
} while (ch==',');
VectorOf<int> weight;
cin >> ch;
if (ch != '[') { cerr << "Unexpected input, aborted"<<endl; exit(1);}
do {
int i;
cin >> i;
weight.append(i);
cin>> ch;
if (ch==']') break;
else if (ch!=','){ cerr << "Unexpected input, aborted"<<endl; exit(1);}
} while (ch==',');
WordOrder word_order("WtShortLex",order,weight);
RKBPackage rkbp(G.namesOfGenerators(),G.getRelators(),word_order);
if ( !rkbp.sanityCheck() ) {
error("RKBPackage failed sanity check.\n");
}
int maxRelLen = 2; // the relators xx^-1 and x^-1x are always added
SetOf<Word> relators = G.getRelators();
SetIterator<Word> I(relators);
while (!I.done()){
Word w = I.value();
int l = w.length();
if ( l > maxRelLen ) maxRelLen = l;
I.next();
}
cout << "Running RKBPackage with parameter " << 2*maxRelLen << endl;
rkbp.runKB(2*maxRelLen, -1, 2*maxRelLen, 2*maxRelLen);
float* A = rkbp.growthRate(2*maxRelLen, 50, 25); //@rn A pointer?!
for ( int i = 1; i <= 2*maxRelLen; i++ )
cout << "Estimated no. of words of length " << i << ": " << A[i] << endl;
delete A;
rkbp.enterRewriteMode();
while (0!=1){
Chars errmesg;
cout << "Enter word to be reduced (terminated with a comma)." << endl;
Word w = G.readWord(cin, errmesg);
G.printWord(cout, w);
if (w.length()==0) { cout << endl; break;}
cout << " rewrites using rkbp as ";
rkbp.rewrite(w);
G.printWord(cout, w);
cout << endl;
}
rkbp.quitRewriteMode();
} while (0!=1);
}
See more files for this project here