isupper(3) [osx 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.  The value of the argument must be representable as an unsigned char or the value of
     EOF.

     In the ASCII character set, this includes the following characters (preceded by their numeric values, in octal):

     101 ``A''	   102 ``B''	 103 ``C''     104 ``D''     105 ``E''
     106 ``F''	   107 ``G''	 110 ``H''     111 ``I''     112 ``J''
     113 ``K''	   114 ``L''	 115 ``M''     116 ``N''     117 ``O''
     120 ``P''	   121 ``Q''	 122 ``R''     123 ``S''     124 ``T''
     125 ``U''	   126 ``V''	 127 ``W''     130 ``X''     131 ``Y''
     132 ``Z''

RETURN VALUES

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

COMPATIBILITY

     The 4.4BSD extension of accepting arguments outside of the range of the unsigned char type in locales with large character sets is considered
     obsolete and may not be supported in future releases.  The iswupper() function should be used instead.

SEE ALSO

     ctype(3), isalnum_l(3), iswupper(3), toupper(3), ascii(7)

STANDARDS

     The isupper() function conforms to ISO/IEC 9899:1990 (``ISO C90'').

BSD
								   July 17, 2005							       BSD

ISALPHA(3)						   BSD Library Functions Manual 						ISALPHA(3)

NAME

     isalpha -- alphabetic character test

LIBRARY

     Standard C Library (libc, -lc)

SYNOPSIS

     #include <ctype.h>

     int
     isalpha(int c);

     int
     isalpha_l(int c, locale_t loc);

DESCRIPTION

     The isalpha() function tests for any character for which isupper(3) or islower(3) is true.  The value of the argument must be representable
     as an unsigned char or the value of EOF.

     In the ASCII character set, this includes the following characters (with their numeric values shown in octal):

     101 ``A''	   102 ``B''	 103 ``C''     104 ``D''     105 ``E''
     106 ``F''	   107 ``G''	 110 ``H''     111 ``I''     112 ``J''
     113 ``K''	   114 ``L''	 115 ``M''     116 ``N''     117 ``O''
     120 ``P''	   121 ``Q''	 122 ``R''     123 ``S''     124 ``T''
     125 ``U''	   126 ``V''	 127 ``W''     130 ``X''     131 ``Y''
     132 ``Z''	   141 ``a''	 142 ``b''     143 ``c''     144 ``d''
     145 ``e''	   146 ``f''	 147 ``g''     150 ``h''     151 ``i''
     152 ``j''	   153 ``k''	 154 ``l''     155 ``m''     156 ``n''
     157 ``o''	   160 ``p''	 161 ``q''     162 ``r''     163 ``s''
     164 ``t''	   165 ``u''	 166 ``v''     167 ``w''     170 ``x''
     171 ``y''	   172 ``z''

     The isalpha_l() function takes an explicit locale argument, whereas the isalpha() function uses the current global or per-thread locale.

RETURN VALUES

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

COMPATIBILITY

     The 4.4BSD extension of accepting arguments outside of the range of the unsigned char type in locales with large character sets is considered
     obsolete and may not be supported in future releases.  The iswalpha() function should be used instead.

SEE ALSO

     ctype(3), islower(3), isupper(3), iswalpha(3), xlocale(3), ascii(7)

STANDARDS

     The isalpha() function conforms to ISO/IEC 9899:1990 (``ISO C90'').  The isalpha_l() function conforms to IEEE Std 1003.1-2008 (``POSIX.1'').

BSD
								   July 17, 2005							       BSD