Annotation of embedaddon/php/ext/bcmath/libbcmath/src/bcmath.h, revision 1.1.1.1
1.1 misho 1: /* bcmath.h: bcmath library header. */
2: /*
3: Copyright (C) 1991, 1992, 1993, 1994, 1997 Free Software Foundation, Inc.
4: Copyright (C) 2000 Philip A. Nelson
5:
6: This library is free software; you can redistribute it and/or
7: modify it under the terms of the GNU Lesser General Public
8: License as published by the Free Software Foundation; either
9: version 2 of the License, or (at your option) any later version.
10:
11: This library is distributed in the hope that it will be useful,
12: but WITHOUT ANY WARRANTY; without even the implied warranty of
13: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14: Lesser General Public License for more details. (COPYING.LIB)
15:
16: You should have received a copy of the GNU Lesser General Public
17: License along with this library; if not, write to:
18:
19: The Free Software Foundation, Inc.
20: 59 Temple Place, Suite 330
21: Boston, MA 02111-1307 USA.
22:
23: You may contact the author by:
24: e-mail: philnelson@acm.org
25: us-mail: Philip A. Nelson
26: Computer Science Department, 9062
27: Western Washington University
28: Bellingham, WA 98226-9062
29:
30: *************************************************************************/
31:
32: #ifndef _BCMATH_H_
33: #define _BCMATH_H_
34:
35: typedef enum {PLUS, MINUS} sign;
36:
37: typedef struct bc_struct *bc_num;
38:
39: typedef struct bc_struct
40: {
41: sign n_sign;
42: int n_len; /* The number of digits before the decimal point. */
43: int n_scale; /* The number of digits after the decimal point. */
44: int n_refs; /* The number of pointers to this number. */
45: bc_num n_next; /* Linked list for available list. */
46: char *n_ptr; /* The pointer to the actual storage.
47: If NULL, n_value points to the inside of
48: another number (bc_multiply...) and should
49: not be "freed." */
50: char *n_value; /* The number. Not zero char terminated.
51: May not point to the same place as n_ptr as
52: in the case of leading zeros generated. */
53: } bc_struct;
54:
55: #ifdef HAVE_CONFIG_H
56: #include "config.h"
57: #endif
58:
59: #include "php.h"
60: #include "../../php_bcmath.h"
61:
62: /* The base used in storing the numbers in n_value above.
63: Currently this MUST be 10. */
64:
65: #define BASE 10
66:
67: /* Some useful macros and constants. */
68:
69: #define CH_VAL(c) (c - '0')
70: #define BCD_CHAR(d) (d + '0')
71:
72: #ifdef MIN
73: #undef MIN
74: #undef MAX
75: #endif
76: #define MAX(a, b) ((a)>(b)?(a):(b))
77: #define MIN(a, b) ((a)>(b)?(b):(a))
78: #define ODD(a) ((a)&1)
79:
80: #ifndef TRUE
81: #define TRUE 1
82: #define FALSE 0
83: #endif
84:
85: #ifndef LONG_MAX
86: #define LONG_MAX 0x7ffffff
87: #endif
88:
89:
90: /* Function Prototypes */
91:
92: /* Define the _PROTOTYPE macro if it is needed. */
93:
94: #ifndef _PROTOTYPE
95: #ifdef __STDC__
96: #define _PROTOTYPE(func, args) func args
97: #else
98: #define _PROTOTYPE(func, args) func()
99: #endif
100: #endif
101:
102: _PROTOTYPE(void bc_init_numbers, (TSRMLS_D));
103:
104: _PROTOTYPE(bc_num _bc_new_num_ex, (int length, int scale, int persistent));
105:
106: _PROTOTYPE(void _bc_free_num_ex, (bc_num *num, int persistent));
107:
108: _PROTOTYPE(bc_num bc_copy_num, (bc_num num));
109:
110: _PROTOTYPE(void bc_init_num, (bc_num *num TSRMLS_DC));
111:
112: _PROTOTYPE(void bc_str2num, (bc_num *num, char *str, int scale TSRMLS_DC));
113:
114: _PROTOTYPE(char *bc_num2str, (bc_num num));
115:
116: _PROTOTYPE(void bc_int2num, (bc_num *num, int val));
117:
118: _PROTOTYPE(long bc_num2long, (bc_num num));
119:
120: _PROTOTYPE(int bc_compare, (bc_num n1, bc_num n2));
121:
122: _PROTOTYPE(char bc_is_zero, (bc_num num TSRMLS_DC));
123:
124: _PROTOTYPE(char bc_is_near_zero, (bc_num num, int scale));
125:
126: _PROTOTYPE(char bc_is_neg, (bc_num num));
127:
128: _PROTOTYPE(void bc_add, (bc_num n1, bc_num n2, bc_num *result, int scale_min));
129:
130: _PROTOTYPE(void bc_sub, (bc_num n1, bc_num n2, bc_num *result, int scale_min));
131:
132: _PROTOTYPE(void bc_multiply, (bc_num n1, bc_num n2, bc_num *prod, int scale TSRMLS_DC));
133:
134: _PROTOTYPE(int bc_divide, (bc_num n1, bc_num n2, bc_num *quot, int scale TSRMLS_DC));
135:
136: _PROTOTYPE(int bc_modulo, (bc_num num1, bc_num num2, bc_num *result,
137: int scale TSRMLS_DC));
138:
139: _PROTOTYPE(int bc_divmod, (bc_num num1, bc_num num2, bc_num *quot,
140: bc_num *rem, int scale TSRMLS_DC));
141:
142: _PROTOTYPE(int bc_raisemod, (bc_num base, bc_num expo, bc_num mod,
143: bc_num *result, int scale TSRMLS_DC));
144:
145: _PROTOTYPE(void bc_raise, (bc_num num1, bc_num num2, bc_num *result,
146: int scale TSRMLS_DC));
147:
148: _PROTOTYPE(int bc_sqrt, (bc_num *num, int scale TSRMLS_DC));
149:
150: _PROTOTYPE(void bc_out_num, (bc_num num, int o_base, void (* out_char)(int),
151: int leading_zero TSRMLS_DC));
152:
153: /* Prototypes needed for external utility routines. */
154:
155: _PROTOTYPE(void bc_rt_warn, (char *mesg ,...));
156: _PROTOTYPE(void bc_rt_error, (char *mesg ,...));
157: _PROTOTYPE(void bc_out_of_memory, (void));
158:
159: #define bc_new_num(length, scale) _bc_new_num_ex((length), (scale), 0)
160: #define bc_free_num(num) _bc_free_num_ex((num), 0)
161:
162: #endif
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