From 82ba818ff456bcd6d56a06226e3f27e98fbb55c3 Mon Sep 17 00:00:00 2001 From: Craig Jennings Date: Thu, 14 Aug 2025 22:58:58 -0500 Subject: removing all downloaded devdocs files --- devdocs/c/string%2Fwide%2Fiswxdigit.html | 145 ------------------------------- 1 file changed, 145 deletions(-) delete mode 100644 devdocs/c/string%2Fwide%2Fiswxdigit.html (limited to 'devdocs/c/string%2Fwide%2Fiswxdigit.html') diff --git a/devdocs/c/string%2Fwide%2Fiswxdigit.html b/devdocs/c/string%2Fwide%2Fiswxdigit.html deleted file mode 100644 index 4382bde0..00000000 --- a/devdocs/c/string%2Fwide%2Fiswxdigit.html +++ /dev/null @@ -1,145 +0,0 @@ -

iswxdigit

Defined in header <wctype.h> 
int iswxdigit( wint_t ch );
-		 (since C95)

Checks if the given wide character corresponds (if narrowed) to a hexadecimal numeric character, i.e. one of 0123456789abcdefABCDEF.

-

Parameters

- -
ch - wide character

Return value

Non-zero value if the wide character is a hexadecimal numeric character, zero otherwise.

-

Notes

iswdigit and iswxdigit are the only standard wide character classification functions that are not affected by the currently installed C locale.

-

Example

-

Some locales offer additional character classes that detect non-ASCII digits

-
#include <locale.h>
-#include <stdio.h>
-#include <wchar.h>
-#include <wctype.h>
- 
-void test(wchar_t a3, wchar_t u3, wchar_t j3)
-{
-    printf("\t  '%lc'  '%lc' '%lc'\n", a3, u3, j3);
-    printf("iswxdigit: %d    %d    %d\n",
-           !!iswxdigit(a3),
-           !!iswxdigit(u3),
-           !!iswxdigit(j3));
-    printf("jdigit:    %d    %d    %d\n",
-           !!iswctype(a3, wctype("jdigit")),
-           !!iswctype(u3, wctype("jdigit")),
-           !!iswctype(j3, wctype("jdigit")));
-}
- 
-int main(void)
-{
-    wchar_t a3 = L'9';  // the ASCII digit 9
-    wchar_t u3 = L'〩'; // the CJK numeral 9
-    wchar_t j3 = L'９'; // the full-width digit 9
- 
-    setlocale(LC_ALL, "en_US.utf8");
-    puts("In American locale:");
-    test(a3, u3, j3);
- 
-    setlocale(LC_ALL, "ja_JP.utf8");
-    puts("\nIn Japanese locale:");
-    test(a3, u3, j3);
-}

Possible output:

-
In American locale:
-          '9'  '〩' '９'
-iswxdigit: 1    0    0
-jdigit:    0    0    0
- 
-In Japanese locale:
-          '9'  '〩' '９'
-iswxdigit: 1    0    0
-jdigit:    0    0    1

References

See also

- -
checks if a character is a hexadecimal character
(function)
C++ documentation for iswxdigit
- - - - - - - - - - - - - - - - - -
ASCII values characters

iscntrl
iswcntrl

-

isprint
iswprint

-

isspace
iswspace

-

isblank
iswblank

-

isgraph
iswgraph

-

ispunct
iswpunct

-

isalnum
iswalnum

-

isalpha
iswalpha

-

isupper
iswupper

-

islower
iswlower

-

isdigit
iswdigit

-

isxdigit
iswxdigit

-
decimal hexadecimal octal
0–8 \x0–\x8 \0–\10 control codes (NUL, etc.) -≠0 0 0 0 0 0 0 0 0 0 0 0
9 \x9 \11 tab (\t) -≠0 0 -≠0 -≠0 0 0 0 0 0 0 0 0
10–13 \xA–\xD \12–\15 whitespaces (\n, \v, \f, \r) -≠0 0 -≠0 0 0 0 0 0 0 0 0 0
14–31 \xE–\x1F \16–\37 control codes -≠0 0 0 0 0 0 0 0 0 0 0 0
32 \x20 \40 space 0 -≠0 -≠0 -≠0 0 0 0 0 0 0 0 0
33–47 \x21–\x2F \41–\57 !"#$%&'()*+,-./ 0 -≠0 0 0 -≠0 -≠0 0 0 0 0 0 0
48–57 \x30–\x39 \60–\71 0123456789 0 -≠0 0 0 -≠0 0 -≠0 0 0 0 -≠0 -≠0
58–64 \x3A–\x40 \72–\100 :;<=>?@ 0 -≠0 0 0 -≠0 -≠0 0 0 0 0 0 0
65–70 \x41–\x46 \101–\106 ABCDEF 0 -≠0 0 0 -≠0 0 -≠0 -≠0 -≠0 0 0 -≠0
71–90 \x47–\x5A \107–\132 GHIJKLMNOP
QRSTUVWXYZ 		0 -≠0 0 0 -≠0 0 -≠0 -≠0 -≠0 0 0 0
91–96 \x5B–\x60 \133–\140 [\]^_` 0 -≠0 0 0 -≠0 -≠0 0 0 0 0 0 0
97–102 \x61–\x66 \141–\146 abcdef 0 -≠0 0 0 -≠0 0 -≠0 -≠0 0 -≠0 0 -≠0
103–122 \x67–\x7A \147–\172 ghijklmnop
qrstuvwxyz 		0 -≠0 0 0 -≠0 0 -≠0 -≠0 0 -≠0 0 0
123–126 \x7B–\x7E \172–\176 {|}~ 0 -≠0 0 0 -≠0 -≠0 0 0 0 0 0 0
127 \x7F \177 backspace character (DEL) -≠0 0 0 0 0 0 0 0 0 0 0 0
-

- © cppreference.com
Licensed under the Creative Commons Attribution-ShareAlike Unported License v3.0.
- https://en.cppreference.com/w/c/string/wide/iswxdigit -

-
-- cgit v1.2.3