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// svectest.cc: Test of sparse vector package
//////////////////////////////////////////////////////////////////////////
//
// Copyright 1990-2012 John Cremona
//
// This file is part of the eclib package.
//
// eclib is free software; you can redistribute it and/or modify it
// under the terms of the GNU General Public License as published by the
// Free Software Foundation; either version 2 of the License, or (at your
// option) any later version.
//
// eclib is distributed in the hope that it will be useful, but WITHOUT
// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
// for more details.
//
// You should have received a copy of the GNU General Public License
// along with eclib; if not, write to the Free Software Foundation,
// Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
//
//////////////////////////////////////////////////////////////////////////
#include <eclib/arith.h>
#include <eclib/types.h>
int main(void)
{
cout << "Test run of sparse vector package.\n\n";
int i,j,n,a;
cout << "Enter n : "; cin >> n;
svec v;
cout << "Uninitialized new vec v = " << v << endl;
svec v2(v);
cout << "Copy of v = " << v2 << endl;
cout << "Enter new entries of v: ";
cout << "Dimension = "; cin>>n; v=svec(n);
cout << "Number of entries = "; cin>>n;
for(i=1; i<=n; i++)
{
cout<<"Position: "; cin>>j;
cout<<"Entry: "; cin>>a;
v.set(j,a);
}
cout << "Now v = " << v << endl;
svec w(3);
cout << "w = " << w << endl;
w = v;
cout << "After w=v, " << endl;
cout << "Now v = " << v << endl;
cout << "Now w = " << w << endl;
cout << "w==v: " << (w==v) << endl;
cout << "w!=v: " << (w!=v) << endl;
cout << "v+w = " << v+w << endl;
cout << "v-w = " << v-w << endl;
cout << "Enter i : "; cin >> i;
w*=2;
cout << "After w*=2, w = " << w << endl;
cout << "3*v = " << (3*v) << endl;
cout << "Now v = " << v << endl;
cout << "v+w = " << v+w << endl;
cout << "Now v = " << v << endl;
cout << "v-w = " << v-w << endl;
cout << "Now v = " << v << endl;
cout << "w/2 = " << w/2 << endl;
cout << "Now w = " << w << endl;
cout << "-v = " << -v << endl;
cout << "+v = " << +v << endl;
cout << "+w = " << +w << endl;
cout << "2*v-w = " << (2*v-w) << endl;
cout << "Resetting w[1] to 99: "; w.set(1,99);
cout << "w = " << w << endl;
w -= 2*v;
cout << "After w-=2*v, w = " << w << endl;
vec vv = v.as_vec();
cout << "v as an ordinary vector = "<<vv<<endl;
#if(0)
cout << "Member test: Enter a test number: " ;
cin >> i; cout << i;
if (member(i,v)) cout << " IS "; else cout << " IS NOT ";
cout << "a member of v." << endl;
cout << "Subscript test\n";
cout << "Enter length of subscript vec:";
int m; cin >> m; vec index=vec(m);
cout << "Enter subscript vector:";
cin >> index;
vec vv = v[index];
cout << "The sub-vector is " << vv << endl;
cout << "Change one entry of v. Index?"; cin >> i;
cout << "New entry?"; scalar x; cin >> x;
v[i]=x;
cout << "New entry: v[" << i << "] = " << v[i] << endl;
cout << "Now v = " << v << endl;
cout << "Initial slice; length? "; cin >> j;
cout << "Slice = " << v.slice(j) << endl;
cout << "Now v = " << v << endl;
cout << "General slice; beginning, end? "; cin >> j >> k;
cout << "Slice = " << v.slice(j,k) << endl;
cout << "Now v = " << v << endl;
cout << "w = " << w << "; vecgcd(w) = " << vecgcd(w) << endl;
makeprimitive(w);
cout << "After makeprimitive(w), w = " << w << endl;
vec u(n);
cout << "u = "<< u << endl;
swapvec(u,v);
cout << "After swapvec(u,v):\nu = " << u << "\nv = " << v << endl;
#endif
}
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