00001 /******************************************************************** 00002 * qofmath128.h -- an 128-bit integer library * 00003 * Copyright (C) 2004 Linas Vepstas <linas@linas.org> * 00004 * * 00005 * This program is free software; you can redistribute it and/or * 00006 * modify it under the terms of the GNU General Public License as * 00007 * published by the Free Software Foundation; either version 2 of * 00008 * the License, or (at your option) any later version. * 00009 * * 00010 * This program is distributed in the hope that it will be useful, * 00011 * but WITHOUT ANY WARRANTY; without even the implied warranty of * 00012 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * 00013 * GNU General Public License for more details. * 00014 * * 00015 * You should have received a copy of the GNU General Public License* 00016 * along with this program; if not, contact: * 00017 * * 00018 * Free Software Foundation Voice: +1-617-542-5942 * 00019 * 51 Franklin Street, Fifth Floor Fax: +1-617-542-2652 * 00020 * Boston, MA 02110-1301, USA gnu@gnu.org * 00021 * * 00022 *******************************************************************/ 00023 00024 #ifndef QOF_MATH_128_H 00025 #define QOF_MATH_128_H 00026 00027 #include <glib.h> 00028 00035 typedef struct 00036 { 00037 guint64 hi; 00038 guint64 lo; 00039 short isneg; 00040 short isbig; 00041 } qofint128; 00042 00044 inline gboolean equal128 (qofint128 a, qofint128 b); 00045 00047 inline int cmp128 (qofint128 a, qofint128 b); 00048 00050 inline qofint128 shift128 (qofint128 x); 00051 00053 inline qofint128 shiftleft128 (qofint128 x); 00054 00056 inline qofint128 inc128 (qofint128 a); 00057 00059 inline qofint128 add128 (qofint128 a, qofint128 b); 00060 00064 inline qofint128 mult128 (gint64 a, gint64 b); 00065 00069 inline qofint128 div128 (qofint128 n, gint64 d); 00070 00076 inline gint64 rem128 (qofint128 n, gint64 d); 00077 00079 inline guint64 gcf64 (guint64 num, guint64 denom); 00080 00082 inline qofint128 lcm128 (guint64 a, guint64 b); 00083 00084 #endif 00085