contrib/gmp/scanf/sscanf.c

   1 /* gmp_sscanf -- formatted input from a string.
   2
   3 Copyright 2001 Free Software Foundation, Inc.
   4
   5 This file is part of the GNU MP Library.
   6
   7 The GNU MP Library is free software; you can redistribute it and/or modify
   8 it under the terms of the GNU Lesser General Public License as published by
   9 the Free Software Foundation; either version 3 of the License, or (at your
  10 option) any later version.
  11
  12 The GNU MP Library is distributed in the hope that it will be useful, but
  13 WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  14 or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
  15 License for more details.
  16
  17 You should have received a copy of the GNU Lesser General Public License
  18 along with the GNU MP Library.  If not, see http://www.gnu.org/licenses/.  */
  19
  20 #include "config.h"
  21
  22 #if HAVE_STDARG
  23 #include <stdarg.h>
  24 #else
  25 #include <varargs.h>
  26 #endif
  27
  28 #include <stdio.h>
  29
  30 #include "gmp.h"
  31 #include "gmp-impl.h"
  32
  33
  34 int
  35 #if HAVE_STDARG
  36 gmp_sscanf (const char *s, const char *fmt, ...)
  37 #else
  38 gmp_sscanf (va_alist)
  39      va_dcl
  40 #endif
  41 {
  42   va_list  ap;
  43   int      ret;
  44 #if HAVE_STDARG
  45   va_start (ap, fmt);
  46 #else
  47   const char *s;
  48   const char *fmt;
  49   va_start (ap);
  50   s = va_arg (ap, const char *);
  51   fmt = va_arg (ap, const char *);
  52 #endif
  53
  54 #if SSCANF_WRITABLE_INPUT
  55   /* let gmp_vsscanf handle the copying */
  56   ret = gmp_vsscanf (s, fmt, ap);
  57 #else
  58   ret = __gmp_doscan (&__gmp_sscanf_funs, (void *) &s, fmt, ap);
  59 #endif
  60   va_end (ap);
  61   return ret;
  62 }