newlib/libc/ctype/iswalnum.c

   1 /*
   2 FUNCTION
   3         <<iswalnum>>, <<iswalnum_l>>---alphanumeric wide character test
   4
   5 INDEX
   6         iswalnum
   7
   8 INDEX
   9         iswalnum_l
  10
  11 SYNOPSIS
  12         #include <wctype.h>
  13         int iswalnum(wint_t <[c]>);
  14
  15         #include <wctype.h>
  16         int iswalnum_l(wint_t <[c]>, locale_t <[locale]>);
  17
  18 DESCRIPTION
  19 <<iswalnum>> is a function which classifies wide-character values that
  20 are alphanumeric.
  21
  22 <<iswalnum_l>> is like <<iswalnum>> but performs the check based on the
  23 locale specified by the locale object locale.  If <[locale]> is
  24 LC_GLOBAL_LOCALE or not a valid locale object, the behaviour is undefined.
  25
  26 RETURNS
  27 <<iswalnum>>, <<iswalnum_l>> return non-zero if <[c]> is a alphanumeric
  28 wide character.
  29
  30 PORTABILITY
  31 <<iswalnum>> is C99.
  32 <<iswalnum_l>> is POSIX-1.2008.
  33
  34 No supporting OS subroutines are required.
  35 */
  36 #include <_ansi.h>
  37 #include <wctype.h>
  38
  39 int
  40 iswalnum (wint_t c)
  41 {
  42   return iswalnum_l (c, 0);
  43 }