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ISLOWER(3)		 BSD Library Functions Manual		    ISLOWER(3)

NAME
     islower --	lower-case character test

LIBRARY
     Standard C	Library	(libc, -lc)

SYNOPSIS
     #include <ctype.h>

     int
     islower(int c);

     int
     islower_l(int c, locale_t loc);

DESCRIPTION
     The islower() function tests for any lower-case letters.  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):

     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 islower_l() function takes an explicit	locale argument, whereas the
     islower() function	uses the current global	or per-thread locale.

RETURN VALUES
     The islower() and islower_l() functions return zero if the	character
     tests false and return 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 ob-
     solete and	may not	be supported in	future releases.  The iswlower() func-
     tion should be used instead.

SEE ALSO
     ctype(3), iswlower(3), tolower(3),	ascii(7)

STANDARDS
     The islower() function conforms to	ISO/IEC	9899:1990 ("ISO	C90").	The
     islower_l() function conforms to IEEE Std 1003.1-2008 ("POSIX.1").

BSD				 July 30, 2012				   BSD

NAME | LIBRARY | SYNOPSIS | DESCRIPTION | RETURN VALUES | COMPATIBILITY | SEE ALSO | STANDARDS

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