LL(1) Grammar for Expressions with Assignment

I've been trying to find an LL(1) grammar for the language of
expressions involving addition, subtraction, multiplication, division,
unary minus, unary plus, and assignment (as in C). Included would be
expressions such as:


          (a=3+b) * (c = 3)


but excluded would be things like:


        3+a=4 and 2 = a


The compiler books I've checked all seem to either use lookahead (i.e.
LL(2)) or check for a proper lvalue for the assignment during semantic
analysis. I suspect this language of expressions is not LL(1). Can
anyone point me to a reference on this?


Thanks,


Seth Bergmann
bergmann@rowan.edu
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