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[/] [or1k/] [trunk/] [newlib/] [newlib/] [libc/] [ctype/] [isprint.c] - Rev 1775
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/* FUNCTION <<isprint>>, <<isgraph>>---printable character predicates INDEX isprint INDEX isgraph ANSI_SYNOPSIS #include <ctype.h> int isprint(int <[c]>); int isgraph(int <[c]>); TRAD_SYNOPSIS #include <ctype.h> int isprint(<[c]>); int isgraph(<[c]>); DESCRIPTION <<isprint>> is a macro which classifies ASCII integer values by table lookup. It is a predicate returning non-zero for printable characters, and 0 for other character arguments. 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 either macro using `<<#undef isprint>>' or `<<#undef isgraph>>'. RETURNS <<isprint>> returns non-zero if <[c]> is a printing character, (<<0x20>>--<<0x7E>>). <<isgraph>> behaves identically to <<isprint>>, except that the space character (<<0x20>>) is excluded. PORTABILITY <<isprint>> and <<isgraph>> are ANSI C. No supporting OS subroutines are required. */ #include <_ansi.h> #include <ctype.h> #undef isgraph int _DEFUN(isgraph,(c),int c) { return((_ctype_ + 1)[c] & (_P|_U|_L|_N)); } #undef isprint int _DEFUN(isprint,(c),int c) { return((_ctype_ + 1)[c] & (_P|_U|_L|_N|_B)); }
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