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[/] [openrisc/] [trunk/] [gnu-old/] [newlib-1.17.0/] [newlib/] [libc/] [ctype/] [isupper.c] - Rev 816
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/* FUNCTION <<isupper>>---uppercase character predicate INDEX isupper ANSI_SYNOPSIS #include <ctype.h> int isupper(int <[c]>); TRAD_SYNOPSIS #include <ctype.h> int isupper(<[c]>); DESCRIPTION <<isupper>> is a macro which classifies ASCII integer values by table lookup. It is a predicate returning non-zero for uppercase letters (<<A>>--<<Z>>), 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 isupper>>'. RETURNS <<isupper>> returns non-zero if <[c]> is a uppercase letter (A-Z). PORTABILITY <<isupper>> is ANSI C. No supporting OS subroutines are required. */ #include <_ansi.h> #include <ctype.h> #undef isupper int _DEFUN(isupper,(c),int c) { return(__ctype_ptr__[c+1] & _U); }