$FUNCNAME$
   FT_BYTEAND()
$CATEGORY$
   String
$ONELINER$
   Perform bit-wise AND on two ASCII characters (bytes)
$SYNTAX$
   FT_BYTEAND( <cByte1>, <cByte2> ) --> cByte
$ARGUMENTS$
   <cByte1> and <cByte2> are characters from CHR(0) TO CHR(255).
   May be passed in CHR() form, as character literals, or as expressions
   evaluating to CHR() values.
$RETURNS$
   Returns resulting byte, in CHR() form.  If parameters are faulty,
   returns NIL.
$DESCRIPTION$
   Can be used for any bit-wise masking operation.  In effect, this is a
   bit-by-bit AND operation.  Equivalent to AND assembler instruction.

   This function is presented to illustrate that bit-wise operations
   are possible with Clipper code.  For greater speed, write .C or
   .ASM versions and use the Clipper Extend system.
$EXAMPLES$
   This code would mask out the high nibble (four most significant bits)
   of the byte represented by chr(123) and leave the low nibble bits as in
   the parameter byte.

	cNewbyte := FT_BYTEAND( CHR(123), CHR(15) )
	? asc(cNewByte)  // result: 11
	? cNewByte       // result: non-printable character

   For a demonstration of Clipper bit manipulations, compile and
   link the program BITTEST.PRG in the Nanforum Toolkit source code.
$SEEALSO$
   FT_BYTEOR(), FT_BYTEXOR(), FT_BYTENOT(), FT_BYTENEG()
$Author: itk $
   Forest Belt, Computer Diagnostic Services, Inc.
$end$

