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/* bcmath.h: bcmath library header. */
/*
Copyright (C) 1991, 1992, 1993, 1994, 1997 Free Software Foundation, Inc.
Copyright (C) 2000 Philip A. Nelson
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library 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
Lesser General Public License for more details. (COPYING.LIB)
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to:
The Free Software Foundation, Inc.
59 Temple Place, Suite 330
Boston, MA 02111-1307 USA.
You may contact the author by:
e-mail: philnelson@acm.org
us-mail: Philip A. Nelson
Computer Science Department, 9062
Western Washington University
Bellingham, WA 98226-9062
*************************************************************************/
#ifndef _BCMATH_H_
#define _BCMATH_H_
typedef enum {PLUS, MINUS} sign;
typedef struct bc_struct *bc_num;
typedef struct bc_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. */
bc_num n_next; /* Linked list for available list. */
char *n_ptr; /* The pointer to the actual storage.
If NULL, n_value points to the inside of
another number (bc_multiply...) and should
not be "freed." */
char *n_value; /* The number. Not zero char terminated.
May not point to the same place as n_ptr as
in the case of leading zeros generated. */
} bc_struct;
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "php.h"
#include "../../php_bcmath.h"
/* 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')
#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
#ifndef LONG_MAX
#define LONG_MAX 0x7ffffff
#endif
/* Function Prototypes */
/* Define the _PROTOTYPE macro if it is needed. */
#ifndef _PROTOTYPE
#ifdef __STDC__
#define _PROTOTYPE(func, args) func args
#else
#define _PROTOTYPE(func, args) func()
#endif
#endif
_PROTOTYPE(void bc_init_numbers, (TSRMLS_D));
_PROTOTYPE(bc_num _bc_new_num_ex, (int length, int scale, int persistent));
_PROTOTYPE(void _bc_free_num_ex, (bc_num *num, int persistent));
_PROTOTYPE(bc_num bc_copy_num, (bc_num num));
_PROTOTYPE(void bc_init_num, (bc_num *num TSRMLS_DC));
_PROTOTYPE(void bc_str2num, (bc_num *num, char *str, int scale TSRMLS_DC));
_PROTOTYPE(char *bc_num2str, (bc_num num));
_PROTOTYPE(void bc_int2num, (bc_num *num, int val));
_PROTOTYPE(long bc_num2long, (bc_num num));
_PROTOTYPE(int bc_compare, (bc_num n1, bc_num n2));
_PROTOTYPE(char bc_is_zero, (bc_num num TSRMLS_DC));
_PROTOTYPE(char bc_is_near_zero, (bc_num num, int scale));
_PROTOTYPE(char bc_is_neg, (bc_num num));
_PROTOTYPE(void bc_add, (bc_num n1, bc_num n2, bc_num *result, int scale_min));
_PROTOTYPE(void bc_sub, (bc_num n1, bc_num n2, bc_num *result, int scale_min));
_PROTOTYPE(void bc_multiply, (bc_num n1, bc_num n2, bc_num *prod, int scale TSRMLS_DC));
_PROTOTYPE(int bc_divide, (bc_num n1, bc_num n2, bc_num *quot, int scale TSRMLS_DC));
_PROTOTYPE(int bc_modulo, (bc_num num1, bc_num num2, bc_num *result,
int scale TSRMLS_DC));
_PROTOTYPE(int bc_divmod, (bc_num num1, bc_num num2, bc_num *quot,
bc_num *rem, int scale TSRMLS_DC));
_PROTOTYPE(int bc_raisemod, (bc_num base, bc_num expo, bc_num mod,
bc_num *result, int scale TSRMLS_DC));
_PROTOTYPE(void bc_raise, (bc_num num1, bc_num num2, bc_num *result,
int scale TSRMLS_DC));
_PROTOTYPE(int bc_sqrt, (bc_num *num, int scale TSRMLS_DC));
_PROTOTYPE(void bc_out_num, (bc_num num, int o_base, void (* out_char)(int),
int leading_zero TSRMLS_DC));
/* Prototypes needed for external utility routines. */
_PROTOTYPE(void bc_rt_warn, (char *mesg ,...));
_PROTOTYPE(void bc_rt_error, (char *mesg ,...));
_PROTOTYPE(void bc_out_of_memory, (void));
#define bc_new_num(length, scale) _bc_new_num_ex((length), (scale), 0)
#define bc_free_num(num) _bc_free_num_ex((num), 0)
#endif
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