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

     islower -- lower-case character test

     Standard C Library (libc, -lc)

     #include <ctype.h>

     islower(int c);

     The islower() function tests for any lower-case letters.  For single C
     chars locales (see multibyte(3)) the value of the argument is repre-sentable representable
     sentable 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() function returns zero if the character tests false and
     returns non-zero if the character tests true.

     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 iswlower()
     function should be used instead.

     ctype(3), isalnum_l(3), iswlower(3), multibyte(3), tolower(3), ascii(7)

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

BSD                             August 21, 2004                            BSD