GSP
Quick Navigator

Search Site

Unix VPS
A - Starter
B - Basic
C - Preferred
D - Commercial
MPS - Dedicated
Previous VPSs
* Sign Up! *

Support
Contact Us
Online Help
Handbooks
Domain Status
Man Pages

FAQ
Virtual Servers
Pricing
Billing
Technical

Network
Facilities
Connectivity
Topology Map

Miscellaneous
Server Agreement
Year 2038
Credits
 

USA Flag

 

 

Man Pages
ISWALNUM(3) FreeBSD Library Functions Manual ISWALNUM(3)

iswalnum, iswalpha, iswascii, iswblank, iswcntrl, iswdigit, iswgraph, iswhexnumber, iswideogram, iswlower, iswnumber, iswphonogram, iswprint, iswpunct, iswrune, iswspace, iswspecial, iswupper, iswxdigit
wide character classification utilities

Standard C Library (libc, -lc)

#include <wctype.h>

int
iswalnum(wint_t wc);

int
iswalpha(wint_t wc);

int
iswascii(wint_t wc);

int
iswblank(wint_t wc);

int
iswcntrl(wint_t wc);

int
iswdigit(wint_t wc);

int
iswgraph(wint_t wc);

int
iswhexnumber(wint_t wc);

int
iswideogram(wint_t wc);

int
iswlower(wint_t wc);

int
iswnumber(wint_t wc);

int
iswphonogram(wint_t wc);

int
iswprint(wint_t wc);

int
iswpunct(wint_t wc);

int
iswrune(wint_t wc);

int
iswspace(wint_t wc);

int
iswspecial(wint_t wc);

int
iswupper(wint_t wc);

int
iswxdigit(wint_t wc);

The above functions are character classification utility functions, for use with wide characters (wchar_t or wint_t). See the description for the similarly-named single byte classification functions (like isalnum(3)), for details.

The functions return zero if the character tests false and return non-zero if the character tests true.

isalnum(3), isalpha(3), isascii(3), isblank(3), iscntrl(3), isdigit(3), isgraph(3), ishexnumber(3), isideogram(3), islower(3), isnumber(3), isphonogram(3), isprint(3), ispunct(3), isrune(3), isspace(3), isspecial(3), isupper(3), isxdigit(3), wctype(3)

These functions conform to IEEE Std 1003.1-2001 (“POSIX.1”), except iswascii(), iswhexnumber(), iswideogram(), iswnumber(), iswphonogram(), iswrune() and iswspecial(), which are FreeBSD extensions.

The result of these functions is undefined unless the argument is WEOF or a valid wchar_t value for the current locale.
October 3, 2002 FreeBSD 13.1-RELEASE

Search for    or go to Top of page |  Section 3 |  Main Index

Powered by GSP Visit the GSP FreeBSD Man Page Interface.
Output converted with ManDoc.