Category : C++ Source Code
Archive   : BLFMATH.ZIP
Filename : SIMPMAT.MTH

 
Output of file : SIMPMAT.MTH contained in archive : BLFMATH.ZIP
/////////////////////////////////////////////////////////////////
// simpmat.mth: Class methods for simple dynamic matrices.
// Copyright(c) 1993 Azarona Software. All rights reserved.
/////////////////////////////////////////////////////////////////

template
SimpleMatrix::SimpleMatrix(unsigned nr, unsigned nc)
// General constructor
{
nrows = nr; ncols = nc;
data = new TYPE[nrows*ncols];
}

template
SimpleMatrix::SimpleMatrix(const SimpleMatrix &m)
// Copy constructor
{
nrows = m.nrows; ncols = m.ncols;
data = new TYPE[nrows*ncols];
Copy(m);
}

template
void SimpleMatrix::Copy(const SimpleMatrix &m)
// Does a two-dimensional copy from m to this matrix,
// truncating if necessary. The logical size of this
// matrix may become smaller, but never larger.
{
// sc, tc = column vector pointers
VecPtr sc(m.data, m.ncols);
VecPtr tc(data, ncols);

// sr, tr = row vector pointers
VecPtr sr(m.data, 1);
VecPtr tr(data, 1);

unsigned nr = nrows;
if (nr > m.nrows) nr = m.nrows;
unsigned nc = ncols;
if (nc > m.ncols) nc = m.ncols;

for (unsigned i = 0; i // Note that only pointers are copied below, not the strides!
tr = tc; // Point to current row of t
sr = sc; // Point to current row of s
for (unsigned j = 0; j *tr = *sr;
tr++; // Next column
sr++; // Ditto
}
tc++; // Next row
sc++; // Ditto
}
nrows = nr; // New logical size of matrix, may be smaller
ncols = nc;
}


  3 Responses to “Category : C++ Source Code
Archive   : BLFMATH.ZIP
Filename : SIMPMAT.MTH
”

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    January 27, 2013 at 3:59 pm

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