Function: bitand
Section: conversions
C-Name: gbitand
Prototype: GG
Help: bitand(x,y): bitwise "and" of two integers x and y. Negative numbers
 behave as if modulo big power of 2
Description: 
 (small, small):small:parens	$(1)&$(2)
 (gen, gen):int	gbitand($1, $2)

