Mercurial > octave-nkf
view src/comment-list.h @ 8964:f4f4d65faaa0
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 | eb63fbe60fab |
children | cd96d29c5efa |
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/* Copyright (C) 2000, 2002, 2004, 2005, 2006, 2007, 2009 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_comment_list_h) #define octave_comment_list_h 1 #include <string> #include <base-list.h> extern std::string get_comment_text (void); extern char *get_comment_text_c_str (void); extern void save_comment_text (const std::string& text); class octave_comment_elt { public: enum comment_type { unknown, block, end_of_line, doc_string, copyright }; octave_comment_elt (const std::string& s = std::string (), comment_type t = unknown) : txt (s), typ (t) { } octave_comment_elt (const octave_comment_elt& oc) : txt (oc.txt), typ (oc.typ) { } octave_comment_elt& operator = (const octave_comment_elt& oc) { if (this != &oc) { txt = oc.txt; typ = oc.typ; } return *this; } std::string text (void) const { return txt; } comment_type type (void) const { return typ; } ~octave_comment_elt (void) { } private: // The text of the comment. std::string txt; // The type of comment. comment_type typ; }; class octave_comment_list : public octave_base_list<octave_comment_elt> { public: octave_comment_list (void) { } void append (const octave_comment_elt& elt) { octave_base_list<octave_comment_elt>::append (elt); } void append (const std::string& s, octave_comment_elt::comment_type t = octave_comment_elt::unknown) { append (octave_comment_elt (s, t)); } octave_comment_list *dup (void) const; }; class octave_comment_buffer { public: octave_comment_buffer (void) : comment_list (new octave_comment_list ()) { } static bool instance_ok (void); static void append (const std::string& s, octave_comment_elt::comment_type t = octave_comment_elt::unknown); static octave_comment_list *get_comment (void); private: void do_append (const std::string& s, octave_comment_elt::comment_type t); octave_comment_list *do_get_comment (void); octave_comment_list *comment_list; static octave_comment_buffer *instance; }; #endif /* ;;; Local Variables: *** ;;; mode: C++ *** ;;; End: *** */