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- /* 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[1]; /* 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
-