1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
|
/* number.h: Arbitrary precision numbers header file. */
/*
Copyright (C) 1991, 1992, 1993, 1994, 1997, 2000 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, Inc.
59 Temple Place, Suite 330
Boston, MA 02110-1301 USA.
You may contact the author by:
e-mail: [email protected]
us-mail: Philip A. Nelson
Computer Science Department, 9062
Western Washington University
Bellingham, WA 98226-9062
*************************************************************************/
#ifndef _NUMBER_H_
#define _NUMBER_H_
#ifdef __cplusplus
extern "C" {
#endif
#undef _PROTOTYPE
#ifndef NUMBER__STDC__
#define NUMBER__STDC__
#endif
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;
/* 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
/* Global numbers. */
extern bc_num _zero_;
extern bc_num _one_;
extern bc_num _two_;
/* Function Prototypes */
/* Define the _PROTOTYPE macro if it is needed. */
#ifndef _PROTOTYPE
#ifdef NUMBER__STDC__
#define _PROTOTYPE(func, args) func args
#else
#define _PROTOTYPE(func, args) func()
#endif
#endif
_PROTOTYPE(void bc_init_numbers, (void));
_PROTOTYPE(bc_num bc_new_num, (int length, int scale));
_PROTOTYPE(void bc_free_num, (bc_num *num));
_PROTOTYPE(bc_num bc_copy_num, (bc_num num));
_PROTOTYPE(void bc_init_num, (bc_num *num));
_PROTOTYPE(void bc_str2num, (bc_num *num, char *str, int scale));
_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));
_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));
_PROTOTYPE(int bc_divide, (bc_num n1, bc_num n2, bc_num *quot, int scale));
_PROTOTYPE(int bc_modulo, (bc_num num1, bc_num num2, bc_num *result,
int scale));
_PROTOTYPE(int bc_divmod, (bc_num num1, bc_num num2, bc_num *quot,
bc_num *rem, int scale));
_PROTOTYPE(int bc_raisemod, (bc_num base, bc_num expo, bc_num mod,
bc_num *result, int scale));
_PROTOTYPE(void bc_raise, (bc_num num1, bc_num num2, bc_num *result,
int scale));
_PROTOTYPE(int bc_sqrt, (bc_num *num, int scale));
_PROTOTYPE(void bc_out_num, (bc_num num, int o_base, void (* out_char)(int),
int leading_zero));
#ifdef __cplusplus
}
#endif
#endif
// vim: set et sw=2 ts=8:
|
