1 : /* init.c: bcmath library file. */
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 : #include <config.h>
33 : #include <stdio.h>
34 : #include <assert.h>
35 : #include <stdlib.h>
36 : #include <ctype.h>
37 : #include <stdarg.h>
38 : #include "bcmath.h"
39 : #include "private.h"
40 :
41 : #if SANDER_0
42 : bc_num _bc_Free_list = NULL;
43 : #endif
44 :
45 : /* new_num allocates a number and sets fields to known values. */
46 :
47 : bc_num
48 : _bc_new_num_ex (length, scale, persistent)
49 : int length, scale, persistent;
50 40866 : {
51 : bc_num temp;
52 :
53 : /* PHP Change: malloc() -> pemalloc(), removed free_list code */
54 40866 : temp = (bc_num) safe_pemalloc (1, sizeof(bc_struct)+length, scale, persistent);
55 : #if 0
56 : if (_bc_Free_list != NULL) {
57 : temp = _bc_Free_list;
58 : _bc_Free_list = temp->n_next;
59 : } else {
60 : temp = (bc_num) pemalloc (sizeof(bc_struct), persistent);
61 : if (temp == NULL) bc_out_of_memory ();
62 : }
63 : #endif
64 40866 : temp->n_sign = PLUS;
65 40866 : temp->n_len = length;
66 40866 : temp->n_scale = scale;
67 40866 : temp->n_refs = 1;
68 : /* PHP Change: malloc() -> pemalloc() */
69 40866 : temp->n_ptr = (char *) safe_pemalloc (1, length, scale, persistent);
70 40866 : if (temp->n_ptr == NULL) bc_out_of_memory();
71 40866 : temp->n_value = temp->n_ptr;
72 40866 : memset (temp->n_ptr, 0, length+scale);
73 40866 : return temp;
74 : }
75 :
76 :
77 : /* "Frees" a bc_num NUM. Actually decreases reference count and only
78 : frees the storage if reference count is zero. */
79 :
80 : void
81 : _bc_free_num_ex (num, persistent)
82 : bc_num *num;
83 : int persistent;
84 41085 : {
85 41085 : if (*num == NULL) return;
86 41081 : (*num)->n_refs--;
87 41081 : if ((*num)->n_refs == 0) {
88 40962 : if ((*num)->n_ptr)
89 : /* PHP Change: free() -> pefree(), removed free_list code */
90 40962 : pefree ((*num)->n_ptr, persistent);
91 40962 : pefree(*num, persistent);
92 : #if 0
93 : (*num)->n_next = _bc_Free_list;
94 : _bc_Free_list = *num;
95 : #endif
96 : }
97 41081 : *num = NULL;
98 : }
99 :
100 :
101 : /* Intitialize the number package! */
102 :
103 : void
104 : bc_init_numbers (TSRMLS_D)
105 13565 : {
106 13565 : BCG(_zero_) = _bc_new_num_ex (1,0,1);
107 13565 : BCG(_one_) = _bc_new_num_ex (1,0,1);
108 13565 : BCG(_one_)->n_value[0] = 1;
109 13565 : BCG(_two_) = _bc_new_num_ex (1,0,1);
110 13565 : BCG(_two_)->n_value[0] = 2;
111 13565 : }
112 :
113 :
114 : /* Make a copy of a number! Just increments the reference count! */
115 :
116 : bc_num
117 : bc_copy_num (bc_num num)
118 119 : {
119 119 : num->n_refs++;
120 119 : return num;
121 : }
122 :
123 :
124 : /* Initialize a number NUM by making it a copy of zero. */
125 :
126 : void
127 : bc_init_num (bc_num *num TSRMLS_DC)
128 95 : {
129 95 : *num = bc_copy_num (BCG(_zero_));
130 95 : }
131 :
|
