1 files changed, 109 insertions, 0 deletions
diff --git a/ext/bcmath/libbcmath/src/str2num.c b/ext/bcmath/libbcmath/src/str2num.c
new file mode 100644
index 0000000..c484c15
--- /dev/null
+++ b/ext/bcmath/libbcmath/src/str2num.c
@@ -0,0 +1,109 @@
+/* str2num.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"
+
+/* Convert strings to bc numbers.  Base 10 only.*/
+
+void
+bc_str2num (bc_num *num, char *str, int scale TSRMLS_DC)
+{
+  int digits, strscale;
+  char *ptr, *nptr;
+  char zero_int;
+
+  /* Prepare num. */
+  bc_free_num (num);
+
+  /* Check for valid number and count digits. */
+  ptr = str;
+  digits = 0;
+  strscale = 0;
+  zero_int = FALSE;
+  if ( (*ptr == '+') || (*ptr == '-'))  ptr++;  /* Sign */
+  while (*ptr == '0') ptr++;			/* Skip leading zeros. */
+  while (isdigit((int)*ptr)) ptr++, digits++;	/* digits */
+  if (*ptr == '.') ptr++;			/* decimal point */
+  while (isdigit((int)*ptr)) ptr++, strscale++;	/* digits */
+  if ((*ptr != '\0') || (digits+strscale == 0))
+    {
+      *num = bc_copy_num (BCG(_zero_));
+      return;
+    }
+
+  /* Adjust numbers and allocate storage and initialize fields. */
+  strscale = MIN(strscale, scale);
+  if (digits == 0)
+    {
+      zero_int = TRUE;
+      digits = 1;
+    }
+  *num = bc_new_num (digits, strscale);
+
+  /* Build the whole number. */
+  ptr = str;
+  if (*ptr == '-')
+    {
+      (*num)->n_sign = MINUS;
+      ptr++;
+    }
+  else
+    {
+      (*num)->n_sign = PLUS;
+      if (*ptr == '+') ptr++;
+    }
+  while (*ptr == '0') ptr++;			/* Skip leading zeros. */
+  nptr = (*num)->n_value;
+  if (zero_int)
+    {
+      *nptr++ = 0;
+      digits = 0;
+    }
+  for (;digits > 0; digits--)
+    *nptr++ = CH_VAL(*ptr++);
+
+
+  /* Build the fractional part. */
+  if (strscale > 0)
+    {
+      ptr++;  /* skip the decimal point! */
+      for (;strscale > 0; strscale--)
+	*nptr++ = CH_VAL(*ptr++);
+    }
+}
+