Annotation of embedaddon/php/ext/bcmath/libbcmath/src/init.c, revision 1.1
1.1 ! misho 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: {
! 51: bc_num temp;
! 52:
! 53: /* PHP Change: malloc() -> pemalloc(), removed free_list code */
! 54: 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: temp->n_sign = PLUS;
! 65: temp->n_len = length;
! 66: temp->n_scale = scale;
! 67: temp->n_refs = 1;
! 68: /* PHP Change: malloc() -> pemalloc() */
! 69: temp->n_ptr = (char *) safe_pemalloc (1, length, scale, persistent);
! 70: if (temp->n_ptr == NULL) bc_out_of_memory();
! 71: temp->n_value = temp->n_ptr;
! 72: memset (temp->n_ptr, 0, length+scale);
! 73: 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: {
! 85: if (*num == NULL) return;
! 86: (*num)->n_refs--;
! 87: if ((*num)->n_refs == 0) {
! 88: if ((*num)->n_ptr)
! 89: /* PHP Change: free() -> pefree(), removed free_list code */
! 90: pefree ((*num)->n_ptr, persistent);
! 91: pefree(*num, persistent);
! 92: #if 0
! 93: (*num)->n_next = _bc_Free_list;
! 94: _bc_Free_list = *num;
! 95: #endif
! 96: }
! 97: *num = NULL;
! 98: }
! 99:
! 100:
! 101: /* Intitialize the number package! */
! 102:
! 103: void
! 104: bc_init_numbers (TSRMLS_D)
! 105: {
! 106: BCG(_zero_) = _bc_new_num_ex (1,0,1);
! 107: BCG(_one_) = _bc_new_num_ex (1,0,1);
! 108: BCG(_one_)->n_value[0] = 1;
! 109: BCG(_two_) = _bc_new_num_ex (1,0,1);
! 110: BCG(_two_)->n_value[0] = 2;
! 111: }
! 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: num->n_refs++;
! 120: 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: {
! 129: *num = bc_copy_num (BCG(_zero_));
! 130: }
! 131:
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