isupper(3) [netbsd man page]

ISUPPER(3)						   BSD Library Functions Manual 						ISUPPER(3)

NAME

     isupper -- upper-case character test

LIBRARY

     Standard C Library (libc, -lc)

SYNOPSIS

     #include <ctype.h>

     int
     isupper(int c);

DESCRIPTION

     The isupper() function tests for any upper-case letter or any of an implementation-defined set of characters for which none of iscntrl(3),
     isdigit(3), ispunct(3), or isspace(3) is true.  In the ``C'' locale, isupper() returns true only for the characters defined as upper-case
     letters.

RETURN VALUES

     The isupper() function returns zero if the character tests false and returns non-zero if the character tests true.

SEE ALSO

     ctype(3), isalnum(3), isalpha(3), isascii(3), isblank(3), iscntrl(3), isdigit(3), isgraph(3), islower(3), isprint(3), ispunct(3), isspace(3),
     isxdigit(3), stdio(3), toascii(3), tolower(3), toupper(3), ascii(7)

STANDARDS

     The isupper() function conforms to ANSI X3.159-1989 (``ANSI C89'').

CAVEATS

     The argument to isupper() must be EOF or representable as an unsigned char; otherwise, the behavior is undefined.	See the CAVEATS section of
     ctype(3) for more details.

BSD
								  April 17, 2008							       BSD

CTYPE(3)						   BSD Library Functions Manual 						  CTYPE(3)

NAME

     digittoint, isalnum, isalpha, isascii, isblank, iscntrl, isdigit, isgraph, ishexnumber, isideogram, islower, isnumber, isphonogram, isprint,
     ispunct, isrune, isspace, isspecial, isupper, isxdigit, toascii, tolower, toupper -- character classification macros

LIBRARY

     Standard C Library (libc, -lc)

SYNOPSIS

     #include <ctype.h>

     int
     digittoint(int c);

     int
     isalnum(int c);

     int
     isalpha(int c);

     int
     isascii(int c);

     int
     iscntrl(int c);

     int
     isdigit(int c);

     int
     isgraph(int c);

     int
     ishexnumber(int c);

     int
     isideogram(int c);

     int
     islower(int c);

     int
     isnumber(int c);

     int
     isphonogram(int c);

     int
     isspecial(int c);

     int
     isprint(int c);

     int
     ispunct(int c);

     int
     isrune(int c);

     int
     isspace(int c);

     int
     isupper(int c);

     int
     isxdigit(int c);

     int
     toascii(int c);

     int
     tolower(int c);

     int
     toupper(int c);

DESCRIPTION

     The above functions perform character tests and conversions on the integer c.  They are available as macros, defined in the include file
     <ctype.h>, or as true functions in the C library.	See the specific manual pages for more information.

     Extended locale versions of these functions are documented in ctype_l(3).	See xlocale(3) for more information.

SEE ALSO

     digittoint(3), isalnum(3), isalpha(3), isascii(3), isblank(3), iscntrl(3), isdigit(3), isgraph(3), isideogram(3), islower(3), isphonogram(3),
     isprint(3), ispunct(3), isrune(3), isspace(3), isspecial(3), isupper(3), isxdigit(3), toascii(3), tolower(3), toupper(3), wctype(3),
     ascii(7), ctype_l(3)

STANDARDS

     These functions, except for digittoint(), isascii(), ishexnumber(), isideogram(), isnumber(), isphonogram(), isrune(), isspecial() and
     toascii(), conform to ISO/IEC 9899:1990 (``ISO C90'').

BSD
								  March 30, 2004							       BSD