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119 lines
4.8 KiB
C
119 lines
4.8 KiB
C
/*
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+----------------------------------------------------------------------+
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| PHP HTML Embedded Scripting Language Version 3.0 |
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+----------------------------------------------------------------------+
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| Copyright (c) 1997,1998 PHP Development Team (See Credits file) |
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+----------------------------------------------------------------------+
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| This program is free software; you can redistribute it and/or modify |
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| it under the terms of one of the following licenses: |
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| A) the GNU General Public License as published by the Free Software |
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| Foundation; either version 2 of the License, or (at your option) |
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| any later version. |
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| |
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| B) the PHP License as published by the PHP Development Team and |
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| included in the distribution in the file: LICENSE |
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| This program is distributed in the hope that it will be useful, |
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| but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| GNU General Public License for more details. |
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| |
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| You should have received a copy of both licenses referred to here. |
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| If you did not, or have any questions about PHP licensing, please |
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| contact core@php.net. |
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+----------------------------------------------------------------------+
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| Modified for PHP by Andi Gutmans <andi@zend.com> |
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+----------------------------------------------------------------------+
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*/
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/* number.h: Arbitrary precision numbers header file. */
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/* This file is part of GNU bc.
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Copyright (C) 1991, 1992, 1993, 1994, 1997 Free Software Foundation, Inc.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License , or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; see the file COPYING. If not, write to
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the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
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You may contact the author by:
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e-mail: phil@cs.wwu.edu
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us-mail: Philip A. Nelson
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Computer Science Department, 9062
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Western Washington University
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Bellingham, WA 98226-9062
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*************************************************************************/
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#ifndef _NUMBER_H
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#define _NUMBER_H
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typedef enum {PLUS, MINUS} sign;
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typedef struct
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{
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sign n_sign;
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int n_len; /* The number of digits before the decimal point. */
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int n_scale; /* The number of digits after the decimal point. */
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int n_refs; /* The number of pointers to this number. */
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char n_value[1]; /* The storage. Not zero char terminated. It is
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allocated with all other fields. */
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} bc_struct;
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typedef bc_struct *bc_num;
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/* The base used in storing the numbers in n_value above.
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Currently this MUST be 10. */
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#define BASE 10
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/* Some useful macros and constants. */
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#define CH_VAL(c) (c - '0')
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#define BCD_CHAR(d) (d + '0')
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#if 0
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#ifdef MIN
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#undef MIN
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#undef MAX
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#endif
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#define MAX(a,b) ((a)>(b)?(a):(b))
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#define MIN(a,b) ((a)>(b)?(b):(a))
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#endif
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#define ODD(a) ((a)&1)
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#ifndef TRUE
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#define TRUE 1
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#define FALSE 0
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#endif
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extern void init_numbers (void);
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extern void destruct_numbers (void);
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extern void str2num (bc_num *num, char *str, int scale);
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extern char *num2str (bc_num num);
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extern void bc_add ( bc_num n1, bc_num n2, bc_num *result, int scale_min);
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extern void bc_sub (bc_num n1, bc_num n2, bc_num *result, int scale_min);
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extern void bc_multiply (bc_num n1, bc_num n2, bc_num *prod, int scale);
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extern int bc_divide (bc_num n1, bc_num n2, bc_num *quot, int scale);
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extern int bc_modulo (bc_num num1, bc_num num2, bc_num *result, int scale);
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extern void bc_raise (bc_num num1, bc_num num2, bc_num *result, int scale);
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extern int bc_sqrt (bc_num *num, int scale);
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extern int bc_compare (bc_num n1, bc_num n2);
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extern void free_num (bc_num *num);
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extern void init_num (bc_num *num);
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#endif
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