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Implement sparse * diagonal and diagonal * sparse operations, double-prec only. Date: Sun, 8 Mar 2009 16:28:18 -0400 These preserve sparsity, so eye(5) * sprand (5, 5, .2) is *sparse* and not dense. This may affect people who use multiplication by eye() rather than full(). The liboctave routines do *not* check if arguments are scalars in disguise. There is a type problem with checking at that level. I suspect we want diag * "sparse scalar" to stay diagonal, but we have to return a sparse matrix at the liboctave. Rather than worrying about that in liboctave, we cope with it when binding to Octave and return the correct higher-level type. The implementation is in Sparse-diag-op-defs.h rather than Sparse-op-defs.h to limit recompilation. And the implementations are templates rather than macros to produce better compiler errors and debugging information.
author Jason Riedy <jason@acm.org>
date Mon, 09 Mar 2009 17:49:13 -0400
parents d865363208d6
children cd96d29c5efa
line wrap: on
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/*

Copyright (C) 1994, 1995, 1996, 1997, 2000, 2003, 2004, 2005, 2006,
              2007, 2008 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/>.

*/

#if !defined (octave_load_save_h)
#define octave_load_save_h 1

#include <iosfwd>
#include <string>

class octave_value;

// FIXME: maybe MAT5 and MAT7 should be options to MAT_BINARY.
// Similarly, save_as_floats may be an option for LS_BINARY, LS_HDF5 etc.
enum load_save_format_type
  {
    LS_ASCII,
    LS_BINARY,
    LS_MAT_ASCII,
    LS_MAT_BINARY,
    LS_MAT5_BINARY,
    LS_MAT7_BINARY,
#ifdef HAVE_HDF5
    LS_HDF5,
#endif /* HAVE_HDF5 */
    LS_UNKNOWN
  };

enum load_save_format_options
{
  // LS_MAT_ASCII options (not exclusive)
  LS_MAT_ASCII_LONG = 1,
  LS_MAT_ASCII_TABS = 2,
  // LS_MAT_BINARY options
  LS_MAT_BINARY_V5 = 1,
  LS_MAT_BINARY_V7,
  // zero means no option.
  LS_NO_OPTION = 0  
};

class load_save_format
{
public:
  load_save_format (load_save_format_type t,
                    load_save_format_options o = LS_NO_OPTION)
    : type (t), opts (o) { }
  operator int (void) const
    { return type; }
  int type, opts;
};

extern void dump_octave_core (void);

extern int
read_binary_file_header (std::istream& is, bool& swap,
			 oct_mach_info::float_format& flt_fmt,
			 bool quiet = false);

extern octave_value
do_load (std::istream& stream, const std::string& orig_fname, bool force,
	 load_save_format format, oct_mach_info::float_format flt_fmt,
	 bool list_only, bool swap, bool verbose,
	 const string_vector& argv, int argv_idx, int argc, int nargout);

extern void
do_save (std::ostream& os, const symbol_table::symbol_record& sr,
	 load_save_format fmt, bool save_as_floats);

extern void
write_header (std::ostream& os, load_save_format format);

#endif

/*
;;; Local Variables: ***
;;; mode: C++ ***
;;; End: ***
*/