// $Id$
// $Log$
// Revision 1.1 2000/11/28 04:50:29 geraint
// Initial revision
//
inline Matrix
ones (const int r = 1, const int c = 1)
{
Matrix m (r, c);
register int i, j;
for (i = 0; i < r; i++)
for (j = 0; j < c; j++)
m (i, j) = 1.0;
return m;
}
inline ColumnVector
nozeros (const ColumnVector v0, const double tol = 0.0)
{
ColumnVector v (v0.length ());
register int i, j;
for (i = j = 0; i < v.length (); i++)
if (tol < abs (v0 (i)))
{
v (j) = v0 (i);
j++;
}
return (j)
? (v.extract (0, --j))
: 0x0;
}
inline ColumnVector
zeros (const int r)
{
ColumnVector v (r);
register int i;
for (i = 0; i < r; i++)
v (i) = 0.0;
return v;
}
inline Matrix
zeros (const int r, const int c)
{
Matrix m (r, c);
register int i, j;
for (i = 0; i < r; i++)
for (j = 0; j < c; j++)
m (i, j) = 0.0;
return m;
}
template <class T>
inline int
sign (T x)
{
return
(0 < x) ? +1 :
(0 > x) ? -1 :
0;
}