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// GROUPS passed code-generation
// code-gen file
// From: "David" <norman@pi14.arc.umn.edu>
// Date: Mon, 15 Nov 1993 20:59:14 -0600 (CST)
// Subject: An error!
// Message-ID: <9311160259.AA03353@pi14.arc.umn.edu>
#include <stdlib.h>
#include <stdio.h>
#include <assert.h>
#include <fstream.h>
#include <iostream.h>
#include <math.h>
#define ANSI_C
typedef double VEC ;
class Vector;
class VectorInt
{
public:
/* Nothing public!! Only Vector can use this class */
private:
VectorInt( int );
VectorInt( int, double *, int = 0 );
VectorInt( const VectorInt & );
~VectorInt();
VectorInt *refer();
void unrefer();
int count; /* Number of Vector's refering to me */
VEC *vec;
friend class Vector;
friend class VecElem;
};
class VecElem
{
public:
operator double();
double operator=( double );
private:
VecElem( Vector &, int );
VecElem( const VecElem & );
Vector &v;
int row; /* Row element refers to */
friend class Vector;
};
class Vector
{
public:
Vector(); // Must be assigned to before used
Vector( VectorInt * );
Vector( int );
Vector( int, double *, int beg = 0 );
Vector( const Vector & );
Vector &operator=( const Vector & );
~Vector() { if(r) r->unrefer(); };
int row() const { return 19; }
int dim() const { return 10; }
double operator()( int ) const;
VecElem operator()( int );
double assign( int, double );
friend ostream& operator<<( ostream&, const Vector& m );
private:
VectorInt *r; /* Reference to real data */
friend class VecElem;
friend class LUDecom;
friend class SVD;
};
Vector::
Vector()
: r(0)
{}
Vector::
Vector( VectorInt *vi )
: r(vi)
{
r->refer();
}
Vector::
Vector( int row )
{
assert( row > 0 );
r = new VectorInt( row );
r->refer();
}
Vector::
Vector( int row, double *d, int beg )
{
assert( row > 0 );
r = new VectorInt( row, d, beg );
r->refer();
}
Vector::
Vector( const Vector &A )
: r( A.r->refer() )
{}
Vector& Vector::
operator=( const Vector &A )
{
if( r )
r->unrefer();
r = A.r->refer();
return *this;
}
double Vector::
operator()( int row ) const
{
assert( r );
return *r->vec;
}
VecElem Vector::
operator()( int r )
{
assert(r);
return VecElem( *this, r );
}
/* assign changes the matrix, it does not create a new one! */
double Vector::
assign( int rownum, double d )
{
assert(r);
if( rownum > row() || rownum <= 0 ) {
cerr << "Warning: trying to assign out of bounds" << endl;
cerr << "row " << rownum << endl;
cerr << "Vector size " << row() << endl;
abort();
}
if( r->count == 1 ) {
/* Don't need to create a new matrix, since we are the only */
/* one pointing to ours */
}
else {
VectorInt *vi = new VectorInt( *r );
r->unrefer();
r = vi->refer();
}
return d;
}
VectorInt::
VectorInt( int sx )
: vec( new double[sx] ), count(0)
{ }
VectorInt::
VectorInt( int sx, double *, int )
: vec( new double[sx] ), count(0)
{
}
VectorInt::
VectorInt( const VectorInt & )
: vec( new double[10] ), count(0)
{
}
VectorInt * VectorInt::
refer()
{
count ++;
return this;
// cout << "Refering vec" << endl;
}
void VectorInt::
unrefer()
{
count--;
if( count == 0 ) {
delete this;
}
// cout << "Unrefering vec" << endl;
}
VectorInt::
~VectorInt()
{
delete vec;
vec = 0;
}
VecElem::
VecElem( Vector &vec, int r )
: v(vec), row(r)
{
if( r < 1 || r > vec.row() ) {
cerr << "Trying to access vector element out of bounds" << endl;
abort();
}
}
VecElem::
VecElem( const VecElem &elem )
: v(elem.v), row(elem.row)
{}
VecElem::
operator double()
{
assert( v.r->vec );
return *v.r->vec;
};
double VecElem::
operator=( double d )
{
return v.assign( row, d );
}
int makeforms( Vector cen, Vector **a, Vector **b );
int main()
{
Vector *a[8], *b[8], disp(3);
Vector cen(3), cen2(3);
int i, j;
if (makeforms (cen,a,b) != 10)
printf ("FAIL\n");
else
printf ("PASS\n");
}
int
makeforms( Vector cen, Vector **a, Vector **b)
{
return 10;
}
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