1 files changed, 132 insertions, 0 deletions
diff --git a/contrib/libgmp/mpz/set_str.c b/contrib/libgmp/mpz/set_str.c
new file mode 100644
index 0000000..d1334b1
--- /dev/null
+++ b/contrib/libgmp/mpz/set_str.c
@@ -0,0 +1,132 @@
+/* mpz_set_str(mp_dest, string, base) -- Convert the \0-terminated
+   string STRING in base BASE to multiple precision integer in
+   MP_DEST.  Allow white space in the string.  If BASE == 0 determine
+   the base in the C standard way, i.e.  0xhh...h means base 16,
+   0oo...o means base 8, otherwise assume base 10.
+
+Copyright (C) 1991, 1993, 1994, Free Software Foundation, Inc.
+
+This file is part of the GNU MP Library.
+
+The GNU MP Library is free software; you can redistribute it and/or modify
+it under the terms of the GNU Library General Public License as published by
+the Free Software Foundation; either version 2 of the License, or (at your
+option) any later version.
+
+The GNU MP 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 Library General Public
+License for more details.
+
+You should have received a copy of the GNU Library General Public License
+along with the GNU MP Library; see the file COPYING.LIB.  If not, write to
+the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
+MA 02111-1307, USA. */
+
+#include <ctype.h>
+#include "gmp.h"
+#include "gmp-impl.h"
+#include "longlong.h"
+
+static int
+digit_value_in_base (c, base)
+     int c;
+     int base;
+{
+  int digit;
+
+  if (isdigit (c))
+    digit = c - '0';
+  else if (islower (c))
+    digit = c - 'a' + 10;
+  else if (isupper (c))
+    digit = c - 'A' + 10;
+  else
+    return -1;
+
+  if (digit < base)
+    return digit;
+  return -1;
+}
+
+int
+#if __STDC__
+mpz_set_str (mpz_ptr x, const char *str, int base)
+#else
+mpz_set_str (x, str, base)
+     mpz_ptr x;
+     const char *str;
+     int base;
+#endif
+{
+  size_t str_size;
+  char *s, *begs;
+  size_t i;
+  mp_size_t xsize;
+  int c;
+  int negative;
+  TMP_DECL (marker);
+
+  /* Skip whitespace.  */
+  do
+    c = *str++;
+  while (isspace (c));
+
+  negative = 0;
+  if (c == '-')
+    {
+      negative = 1;
+      c = *str++;
+    }
+
+  if (digit_value_in_base (c, base == 0 ? 10 : base) < 0)
+    return -1;			/* error if no digits */
+
+  /* If BASE is 0, try to find out the base by looking at the initial
+     characters.  */
+  if (base == 0)
+    {
+      base = 10;
+      if (c == '0')
+	{
+	  base = 8;
+	  c = *str++;
+	  if (c == 'x' || c == 'X')
+	    {
+	      base = 16;
+	      c = *str++;
+	    }
+	}
+    }
+
+  TMP_MARK (marker);
+  str_size = strlen (str - 1);
+  s = begs = (char *) TMP_ALLOC (str_size + 1);
+
+  for (i = 0; i < str_size; i++)
+    {
+      if (!isspace (c))
+	{
+	  int dig = digit_value_in_base (c, base);
+	  if (dig < 0)
+	    {
+	      TMP_FREE (marker);
+	      return -1;
+	    }
+	  *s++ = dig;
+	}
+      c = *str++;
+    }
+
+  str_size = s - begs;
+
+  xsize = str_size / __mp_bases[base].chars_per_limb + 1;
+  if (x->_mp_alloc < xsize)
+    _mpz_realloc (x, xsize);
+
+  xsize = mpn_set_str (x->_mp_d, (unsigned char *) begs, str_size, base);
+  x->_mp_size = negative ? -xsize : xsize;
+
+  TMP_FREE (marker);
+  return 0;
+}