Canola: lib/number/negative.cc Source File

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00001 //
00002 // canola - canon canola 1614p emulator
00003 // Copyright (C) 2011, 2012 Peter Miller
00004 //
00005 // This program is free software; you can redistribute it and/or modify
00006 // it under the terms of the GNU General Public License, version 3, as
00007 // published by the Free Software Foundation.
00008 //
00009 // This program is distributed in the hope that it will be useful,
00010 // but WITHOUT ANY WARRANTY; without even the implied warranty of
00011 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00012 // General Public License for more details.
00013 //
00014 // You should have received a copy of the GNU General Public License along
00015 // with this program. If not, see <http://www.gnu.org/licenses/>.
00016 //
00017 
00018 #include <lib/number.h>
00019 
00020 
00021 number
00022 number::operator-(void)
00023     const
00024 {
00025     // Instruction Manual, p. 10
00026     // 0 -> 0
00027     if (is_zero())
00028         return number();
00029 
00030     return number(value, decimal, !negative);
00031 }
00032 
00033 
00034 // vim: set ts=8 sw=4 et :