newlib/libc/stdio/scanf.c

   1 /*
   2  * Copyright (c) 1990 The Regents of the University of California.
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms are permitted
   6  * provided that the above copyright notice and this paragraph are
   7  * duplicated in all such forms and that any documentation,
   8  * and/or other materials related to such
   9  * distribution and use acknowledge that the software was developed
  10  * by the University of California, Berkeley.  The name of the
  11  * University may not be used to endorse or promote products derived
  12  * from this software without specific prior written permission.
  13  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
  14  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
  15  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
  16  */
  17
  18 #include <_ansi.h>
  19 #include <reent.h>
  20 #include <stdio.h>
  21 #include <stdarg.h>
  22 #include "local.h"
  23
  24 #ifndef _REENT_ONLY
  25
  26 int
  27 scanf(const char *__restrict fmt, ...)
  28 {
  29   int ret;
  30   va_list ap;
  31   struct _reent *reent = _REENT;
  32
  33   _REENT_SMALL_CHECK_INIT (reent);
  34   va_start (ap, fmt);
  35   ret = _vfscanf_r (reent, _stdin_r (reent), fmt, ap);
  36   va_end (ap);
  37   return ret;
  38 }
  39
  40 #ifdef _NANO_FORMATTED_IO
  41 int
  42 iscanf (const char *, ...)
  43        _ATTRIBUTE ((__alias__("scanf")));
  44 #endif
  45
  46 #endif /* !_REENT_ONLY */
  47
  48 int
  49 _scanf_r(struct _reent *ptr, const char *__restrict fmt, ...)
  50 {
  51   int ret;
  52   va_list ap;
  53
  54   _REENT_SMALL_CHECK_INIT (ptr);
  55   va_start (ap, fmt);
  56   ret = _vfscanf_r (ptr, _stdin_r (ptr), fmt, ap);
  57   va_end (ap);
  58   return (ret);
  59 }
  60
  61 #ifdef _NANO_FORMATTED_IO
  62 int
  63 _iscanf_r (struct _reent *, const char *, ...)
  64        _ATTRIBUTE ((__alias__("_scanf_r")));
  65 #endif