isxdigit man page on Cygwin

isxdigit man page on Cygwin

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ISXDIGIT(3)			    NEWLIB			   ISXDIGIT(3)

NAME
       3.11 `isxdigit'--hexadecimal digit predicate

SYNOPSIS
	    #include <ctype.h>
	    int isxdigit(int C);

DESCRIPTION
       `isxdigit'  is  a  macro which classifies ASCII integer values by table
       lookup.	It is a predicate returning non-zero for  hexadecimal  digits,
       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 isxdigit''.

RETURNS
       `isxdigit'  returns  non-zero  if  C  is	 a hexadecimal digit (`0'-`9',
       `a'-`f', or `A'-`F').

PORTABILITY
       `isxdigit' is ANSI C.

	  No supporting OS subroutines are required.

SEE ALSO
       isxdigit is part of the library.	 The full documentation for  is	 main‐
       tained as a Texinfo manual.  If info and are properly installed at your
       site, the command

	      info

       will give you access to the complete manual.

NEWLIB				  April 2010			   ISXDIGIT(3)

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