At long last, import the bcmath library, by Phil Nelson

1 files changed, 135 insertions, 0 deletions

diff --git a/ext/bcmath/libbcmath/src/init.c b/ext/bcmath/libbcmath/src/init.c
new file mode 100644
index 0000000000..4ff00b1102
--- /dev/null
+++ b/ext/bcmath/libbcmath/src/init.c
@@ -0,0 +1,135 @@
+/* init.c: bcmath library file. */
+/*
+    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
+       
+*************************************************************************/
+
+#include <config.h>
+#include <stdio.h>
+#include <assert.h>
+#include <stdlib.h>
+#include <ctype.h>
+#include <stdarg.h>
+#include "bcmath.h"
+#include "private.h"
+
+/* Storage used for special numbers. */
+bc_num _zero_;
+bc_num _one_;
+bc_num _two_;
+
+ bc_num _bc_Free_list = NULL;
+
+/* new_num allocates a number and sets fields to known values. */
+
+bc_num
+bc_new_num (length, scale)
+     int length, scale;
+{
+  bc_num temp;
+
+  /* PHP Change:  malloc() -> emalloc(), removed free_list code */
+  temp = (bc_num) emalloc (sizeof(bc_struct)+length+scale);
+#if 0
+  if (_bc_Free_list != NULL) {
+    temp = _bc_Free_list;
+    _bc_Free_list = temp->n_next;
+  } else {
+    temp = (bc_num) emalloc (sizeof(bc_struct));
+    if (temp == NULL) bc_out_of_memory ();
+  }
+#endif
+  temp->n_sign = PLUS;
+  temp->n_len = length;
+  temp->n_scale = scale;
+  temp->n_refs = 1;
+  /* PHP Change:  malloc() -> emalloc() */
+  temp->n_ptr = (char *) emalloc (length+scale);
+  if (temp->n_ptr == NULL) bc_out_of_memory();
+  temp->n_value = temp->n_ptr;
+  memset (temp->n_ptr, 0, length+scale);
+  return temp;
+}
+
+
+/* "Frees" a bc_num NUM.  Actually decreases reference count and only
+   frees the storage if reference count is zero. */
+
+void
+bc_free_num (num)
+    bc_num *num;
+{
+  if (*num == NULL) return;
+  (*num)->n_refs--;
+  if ((*num)->n_refs == 0) {
+    if ((*num)->n_ptr)
+		/* PHP Change:  free() -> efree(), removed free_list code */
+      efree ((*num)->n_ptr);
+	efree(*num);
+#if 0
+    (*num)->n_next = _bc_Free_list;
+    _bc_Free_list = *num;
+#endif
+  }
+  *num = NULL;
+}
+
+
+/* Intitialize the number package! */
+
+void
+bc_init_numbers ()
+{
+  _zero_ = bc_new_num (1,0);
+  _one_  = bc_new_num (1,0);
+  _one_->n_value[0] = 1;
+  _two_  = bc_new_num (1,0);
+  _two_->n_value[0] = 2;
+}
+
+
+/* Make a copy of a number!  Just increments the reference count! */
+
+bc_num
+bc_copy_num (num)
+     bc_num num;
+{
+  num->n_refs++;
+  return num;
+}
+
+
+/* Initialize a number NUM by making it a copy of zero. */
+
+void
+bc_init_num (num)
+     bc_num *num;
+{
+  *num = bc_copy_num (_zero_);
+}
+