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[/] [scarts/] [trunk/] [toolchain/] [scarts-newlib/] [newlib-1.17.0/] [newlib/] [libc/] [ctype/] [islower.c] - Rev 9
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/* FUNCTION <<islower>>---lowercase character predicate INDEX islower ANSI_SYNOPSIS #include <ctype.h> int islower(int <[c]>); TRAD_SYNOPSIS #include <ctype.h> int islower(<[c]>); DESCRIPTION <<islower>> is a macro which classifies ASCII integer values by table lookup. It is a predicate returning non-zero for minuscules (lowercase alphabetic characters), and 0 for other characters. It is defined only when <<isascii>>(<[c]>) is true or <[c]> is EOF. You can use a compiled subroutine instead of the macro definition by undefining the macro using `<<#undef islower>>'. RETURNS <<islower>> returns non-zero if <[c]> is a lowercase letter (<<a>>--<<z>>). PORTABILITY <<islower>> is ANSI C. No supporting OS subroutines are required. */ #include <_ansi.h> #include <ctype.h> #undef islower int _DEFUN(islower,(c),int c) { return(__ctype_ptr__[c+1] & _L); }