--- /dev/null
+/* gmp_vsscanf -- formatted input from a string.
+
+Copyright 2001, 2002 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 Lesser General Public License as published by
+the Free Software Foundation; either version 3 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 Lesser General Public
+License for more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with the GNU MP Library. If not, see http://www.gnu.org/licenses/. */
+
+#include "config.h"
+
+#if HAVE_STDARG
+#include <stdarg.h>
+#else
+#include <varargs.h>
+#endif
+
+#include <string.h>
+
+#include "gmp.h"
+#include "gmp-impl.h"
+
+
+int
+gmp_vsscanf (const char *s, const char *fmt, va_list ap)
+{
+#if SSCANF_WRITABLE_INPUT
+ /* We only actually need this if there's standard C types in fmt, and if
+ "s" is not already writable, but it's too much trouble to check that,
+ and in any case this writable sscanf input business is only for a few
+ old systems. */
+ size_t size;
+ char *alloc;
+ int ret;
+ size = strlen (s) + 1;
+ alloc = (char *) (*__gmp_allocate_func) (size);
+ memcpy (alloc, s, size);
+ s = alloc;
+ ret = __gmp_doscan (&__gmp_sscanf_funs, (void *) &s, fmt, ap);
+ (*__gmp_free_func) (alloc, size);
+ return ret;
+
+#else
+ return __gmp_doscan (&__gmp_sscanf_funs, (void *) &s, fmt, ap);
+#endif
+}