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/*
+----------------------------------------------------------------------+
| PHP HTML Embedded Scripting Language Version 3.0 |
+----------------------------------------------------------------------+
| Copyright (c) 1997-2000 PHP Development Team (See Credits file) |
+----------------------------------------------------------------------+
| This program is free software; you can redistribute it and/or modify |
| it under the terms of one of the following licenses: |
| |
| A) 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. |
| |
| B) the PHP License as published by the PHP Development Team and |
| included in the distribution in the file: LICENSE |
| |
| 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 both licenses referred to here. |
| If you did not, or have any questions about PHP licensing, please |
| contact core@php.net. |
+----------------------------------------------------------------------+
| Modified for PHP by Andi Gutmans <andi@zend.com> |
+----------------------------------------------------------------------+
*/
/* $Id: number.h,v 1.20 2000/04/10 19:29:37 andi Exp $
Arbitrary precision numbers header file. */
/* This file is part of GNU bc.
Copyright (C) 1991, 1992, 1993, 1994, 1997 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
*************************************************************************/
#ifndef _NUMBER_H
#define _NUMBER_H
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;
/* The base used in storing the numbers in n_value above.
Currently this MUST be 10. */
#define BASE 10
/* Some useful macros and constants. */
#define CH_VAL(c) (c - '0')
#define BCD_CHAR(d) (d + '0')
#if 0
#ifdef MIN
#undef MIN
#undef MAX
#endif
#define MAX(a,b) ((a)>(b)?(a):(b))
#define MIN(a,b) ((a)>(b)?(b):(a))
#endif
#define ODD(a) ((a)&1)
#ifndef TRUE
#define TRUE 1
#define FALSE 0
#endif
extern void init_numbers (void);
extern void destruct_numbers (void);
extern void str2num (bc_num *num, char *str, int scale);
extern char *num2str (bc_num num);
extern void bc_add ( bc_num n1, bc_num n2, bc_num *result, int scale_min);
extern void bc_sub (bc_num n1, bc_num n2, bc_num *result, int scale_min);
extern void bc_multiply (bc_num n1, bc_num n2, bc_num *prod, int scale);
extern int bc_divide (bc_num n1, bc_num n2, bc_num *quot, int scale);
extern int bc_modulo (bc_num num1, bc_num num2, bc_num *result, int scale);
extern void bc_raise (bc_num num1, bc_num num2, bc_num *result, int scale);
extern int bc_sqrt (bc_num *num, int scale);
extern int bc_compare (bc_num n1, bc_num n2);
extern void free_num (bc_num *num);
extern void init_num (bc_num *num);
#endif
|
