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Diffstat (limited to 'ext/bcmath/number.h')
| -rw-r--r-- | ext/bcmath/number.h | 118 |
1 files changed, 118 insertions, 0 deletions
diff --git a/ext/bcmath/number.h b/ext/bcmath/number.h new file mode 100644 index 0000000000..ece47ad768 --- /dev/null +++ b/ext/bcmath/number.h @@ -0,0 +1,118 @@ +/* + +----------------------------------------------------------------------+ + | PHP HTML Embedded Scripting Language Version 3.0 | + +----------------------------------------------------------------------+ + | Copyright (c) 1997,1998 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> | + +----------------------------------------------------------------------+ + */ + +/* number.h: 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 |