macrovar - variables of function
Returns in a list the set of variables used by a function. vars is a list made of five column vectors of character strings
in : input variables ( vars(1) )
out : output variables ( vars(2) )
globals : global variables ( vars(3) )
called : names of functions called ( vars(4) )
locals : local variables ( vars(5) )
deff('y=f(x1,x2)','loc=1;y=a*x1+x2-loc') vars=macrovar(f)