enum BOTH = 0b11, FIRST = 0b10, SECOND = 0b01, NEITHER = 0b00

function if2(bool c1, bool c2)
    return c1*2+c2
end function

integer r = if2(condition1,condition2)
if    r=BOTH then
elsif r=FIRST then
elsif r=SECOND then
elsif r=NEITHER then
end if