| /* number.h: Arbitrary precision numbers header file. */ |
| |
| /* This file is part of bc written for MINIX. |
| Copyright (C) 1991, 1992 Free Software Foundation, Inc. |
| |
| This program 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 2 of the License , or |
| (at your option) any later version. |
| |
| This program 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 this program; see the file COPYING. If not, write to |
| the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. |
| |
| You may contact the author by: |
| e-mail: phil@cs.wwu.edu |
| us-mail: Philip A. Nelson |
| Computer Science Department, 9062 |
| Western Washington University |
| Bellingham, WA 98226-9062 |
| |
| *************************************************************************/ |
| |
| |
| typedef enum {PLUS, MINUS} sign; |
| |
| typedef struct |
| { |
| sign n_sign; |
| int n_len; /* The number of digits before the decimal point. */ |
| int n_scale; /* The number of digits after the decimal point. */ |
| int n_refs; /* The number of pointers to this number. */ |
| char n_value[1024]; /* The storage. Not zero char terminated. It is |
| allocated with all other fields. */ |
| } bc_struct; |
| |
| typedef bc_struct * bc_num; |
| |
| /* Some useful macros and constants. */ |
| |
| #define CH_VAL(c) (c - '0') |
| #define BCD_CHAR(d) (d + '0') |
| |
| #ifdef MIN |
| #undef MIN |
| #undef MAX |
| #endif |
| #define MAX(a,b) (a>b?a:b) |
| #define MIN(a,b) (a>b?b:a) |
| #define ODD(a) (a&1) |
| |
| #ifndef TRUE |
| #define TRUE 1 |
| #define FALSE 0 |
| #endif |