--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/liboctave/fColVector.cc	Sun Apr 27 22:34:17 2008 +0200
@@ -0,0 +1,345 @@
+// ColumnVector manipulations.
+/*
+
+Copyright (C) 1994, 1995, 1996, 1997, 2000, 2001, 2002, 2003, 2004,
+              2005, 2007 John W. Eaton
+
+This file is part of Octave.
+
+Octave 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 3 of the License, or (at your
+option) any later version.
+
+Octave 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 Octave; see the file COPYING.  If not, see
+<http://www.gnu.org/licenses/>.
+
+*/
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <iostream>
+
+#include "Array-util.h"
+#include "f77-fcn.h"
+#include "functor.h"
+#include "lo-error.h"
+#include "mx-base.h"
+#include "mx-inlines.cc"
+#include "oct-cmplx.h"
+
+// Fortran functions we call.
+
+extern "C"
+{
+  F77_RET_T
+  F77_FUNC (sgemv, SGEMV) (F77_CONST_CHAR_ARG_DECL,
+			   const octave_idx_type&, const octave_idx_type&, const float&,
+			   const float*, const octave_idx_type&, const float*,
+			   const octave_idx_type&, const float&, float*,
+			   const octave_idx_type&
+			   F77_CHAR_ARG_LEN_DECL);
+}
+
+// Column Vector class.
+
+bool
+FloatColumnVector::operator == (const FloatColumnVector& a) const
+{
+  octave_idx_type len = length ();
+  if (len != a.length ())
+    return 0;
+  return mx_inline_equal (data (), a.data (), len);
+}
+
+bool
+FloatColumnVector::operator != (const FloatColumnVector& a) const
+{
+  return !(*this == a);
+}
+
+FloatColumnVector&
+FloatColumnVector::insert (const FloatColumnVector& a, octave_idx_type r)
+{
+  octave_idx_type a_len = a.length ();
+
+  if (r < 0 || r + a_len > length ())
+    {
+      (*current_liboctave_error_handler) ("range error for insert");
+      return *this;
+    }
+
+  if (a_len > 0)
+    {
+      make_unique ();
+
+      for (octave_idx_type i = 0; i < a_len; i++)
+	xelem (r+i) = a.elem (i);
+    }
+
+  return *this;
+}
+
+FloatColumnVector&
+FloatColumnVector::fill (float val)
+{
+  octave_idx_type len = length ();
+
+  if (len > 0)
+    {
+      make_unique ();
+
+      for (octave_idx_type i = 0; i < len; i++)
+	xelem (i) = val;
+    }
+
+  return *this;
+}
+
+FloatColumnVector&
+FloatColumnVector::fill (float val, octave_idx_type r1, octave_idx_type r2)
+{
+  octave_idx_type len = length ();
+
+  if (r1 < 0 || r2 < 0 || r1 >= len || r2 >= len)
+    {
+      (*current_liboctave_error_handler) ("range error for fill");
+      return *this;
+    }
+
+  if (r1 > r2) { octave_idx_type tmp = r1; r1 = r2; r2 = tmp; }
+
+  if (r2 >= r1)
+    {
+      make_unique ();
+
+      for (octave_idx_type i = r1; i <= r2; i++)
+	xelem (i) = val;
+    }
+
+  return *this;
+}
+
+FloatColumnVector
+FloatColumnVector::stack (const FloatColumnVector& a) const
+{
+  octave_idx_type len = length ();
+  octave_idx_type nr_insert = len;
+  FloatColumnVector retval (len + a.length ());
+  retval.insert (*this, 0);
+  retval.insert (a, nr_insert);
+  return retval;
+}
+
+FloatRowVector
+FloatColumnVector::transpose (void) const
+{
+  return MArray<float>::transpose();
+}
+
+FloatColumnVector
+real (const FloatComplexColumnVector& a)
+{
+  octave_idx_type a_len = a.length ();
+  FloatColumnVector retval;
+  if (a_len > 0)
+    retval = FloatColumnVector (mx_inline_real_dup (a.data (), a_len), a_len);
+  return retval;
+}
+
+FloatColumnVector
+imag (const FloatComplexColumnVector& a)
+{
+  octave_idx_type a_len = a.length ();
+  FloatColumnVector retval;
+  if (a_len > 0)
+    retval = FloatColumnVector (mx_inline_imag_dup (a.data (), a_len), a_len);
+  return retval;
+}
+
+// resize is the destructive equivalent for this one
+
+FloatColumnVector
+FloatColumnVector::extract (octave_idx_type r1, octave_idx_type r2) const
+{
+  if (r1 > r2) { octave_idx_type tmp = r1; r1 = r2; r2 = tmp; }
+
+  octave_idx_type new_r = r2 - r1 + 1;
+
+  FloatColumnVector result (new_r);
+
+  for (octave_idx_type i = 0; i < new_r; i++)
+    result.xelem (i) = elem (r1+i);
+
+  return result;
+}
+
+FloatColumnVector
+FloatColumnVector::extract_n (octave_idx_type r1, octave_idx_type n) const
+{
+  FloatColumnVector result (n);
+
+  for (octave_idx_type i = 0; i < n; i++)
+    result.xelem (i) = elem (r1+i);
+
+  return result;
+}
+
+// matrix by column vector -> column vector operations
+
+FloatColumnVector
+operator * (const FloatMatrix& m, const FloatColumnVector& a)
+{
+  FloatColumnVector retval;
+
+  octave_idx_type nr = m.rows ();
+  octave_idx_type nc = m.cols ();
+
+  octave_idx_type a_len = a.length ();
+
+  if (nc != a_len)
+    gripe_nonconformant ("operator *", nr, nc, a_len, 1);
+  else
+    {
+      if (nr == 0 || nc == 0)
+	retval.resize (nr, 0.0);
+      else
+	{
+	  octave_idx_type ld = nr;
+
+	  retval.resize (nr);
+	  float *y = retval.fortran_vec ();
+
+	  F77_XFCN (sgemv, SGEMV, (F77_CONST_CHAR_ARG2 ("N", 1),
+				   nr, nc, 1.0, m.data (), ld,
+				   a.data (), 1, 0.0, y, 1
+				   F77_CHAR_ARG_LEN (1)));
+	}
+    }
+
+  return retval;
+}
+
+// diagonal matrix by column vector -> column vector operations
+
+FloatColumnVector
+operator * (const FloatDiagMatrix& m, const FloatColumnVector& a)
+{
+  FloatColumnVector retval;
+
+  octave_idx_type nr = m.rows ();
+  octave_idx_type nc = m.cols ();
+
+  octave_idx_type a_len = a.length ();
+
+  if (nc != a_len)
+    gripe_nonconformant ("operator *", nr, nc, a_len, 1);
+  else
+    {
+      if (nr == 0 || nc == 0)
+	retval.resize (nr, 0.0);
+      else
+	{
+	  retval.resize (nr);
+
+	  for (octave_idx_type i = 0; i < a_len; i++)
+	    retval.elem (i) = a.elem (i) * m.elem (i, i);
+
+	  for (octave_idx_type i = a_len; i < nr; i++)
+	    retval.elem (i) = 0.0;
+	}
+    }
+
+  return retval;
+}
+
+// other operations
+
+FloatColumnVector
+FloatColumnVector::map (dmapper fcn) const
+{
+  return MArray<float>::map<float> (func_ptr (fcn));
+}
+
+FloatComplexColumnVector
+FloatColumnVector::map (cmapper fcn) const
+{
+  return MArray<float>::map<FloatComplex> (func_ptr (fcn));
+}
+
+float
+FloatColumnVector::min (void) const
+{
+  octave_idx_type len = length ();
+  if (len == 0)
+    return 0.0;
+
+  float res = elem (0);
+
+  for (octave_idx_type i = 1; i < len; i++)
+    if (elem (i) < res)
+      res = elem (i);
+
+  return res;
+}
+
+float
+FloatColumnVector::max (void) const
+{
+  octave_idx_type len = length ();
+  if (len == 0)
+    return 0.0;
+
+  float res = elem (0);
+
+  for (octave_idx_type i = 1; i < len; i++)
+    if (elem (i) > res)
+      res = elem (i);
+
+  return res;
+}
+
+std::ostream&
+operator << (std::ostream& os, const FloatColumnVector& a)
+{
+//  int field_width = os.precision () + 7;
+  for (octave_idx_type i = 0; i < a.length (); i++)
+    os << /* setw (field_width) << */ a.elem (i) << "\n";
+  return os;
+}
+
+std::istream&
+operator >> (std::istream& is, FloatColumnVector& a)
+{
+  octave_idx_type len = a.length();
+
+  if (len < 1)
+    is.clear (std::ios::badbit);
+  else
+    {
+      float tmp;
+      for (octave_idx_type i = 0; i < len; i++)
+        {
+          is >> tmp;
+          if (is)
+            a.elem (i) = tmp;
+          else
+            break;
+        }
+    }
+  return is;
+}
+
+/*
+;;; Local Variables: ***
+;;; mode: C++ ***
+;;; End: ***
+*/