def _unsigned_add_overflow(state, a, b):
        """
        Sign extend the value to 512 bits and check the result can be represented
         in 256. Following there is a 32 bit excerpt of this condition:

        a  +  b   ffffffff bfffffff 80000001 00000000 00000001 3ffffffff 7fffffff
        ffffffff     True     True     True    False     True     True     True
        bfffffff     True     True     True    False    False     True     True
        80000001     True     True     True    False    False     True     True
        00000000    False    False    False    False    False     True    False
        00000001     True    False    False    False    False     True    False
        ffffffff     True     True     True     True     True     True     True
        7fffffff     True     True     True    False    False     True    False
        """
        add = Operators.ZEXTEND(a, 512) + Operators.ZEXTEND(b, 512)
        cond = Operators.UGE(add, 1 << 256)
        return cond
def _unsigned_add_overflow(state, a, b):
        """
        Sign extend the value to 512 bits and check the result can be represented
         in 256. Following there is a 32 bit excerpt of this condition:

        a  +  b   ffffffff bfffffff 80000001 00000000 00000001 3ffffffff 7fffffff
        ffffffff     True     True     True    False     True     True     True
        bfffffff     True     True     True    False    False     True     True
        80000001     True     True     True    False    False     True     True
        00000000    False    False    False    False    False     True    False
        00000001     True    False    False    False    False     True    False
        ffffffff     True     True     True     True     True     True     True
        7fffffff     True     True     True    False    False     True    False
        """
        add = Operators.ZEXTEND(a, 512) + Operators.ZEXTEND(b, 512)
        cond = Operators.UGE(add, 1 << 256)
        return cond
def _unsigned_add_overflow ( state , a , b ) : add = Operators . ZEXTEND ( a , 512 ) + Operators . ZEXTEND ( b , 512 ) cond = Operators . UGE ( add , 1 << 256 ) return cond
Sign extend the value to 512 bits and check the result can be represented
         in 256. Following there is a 32 bit excerpt of this condition:

        a  +  b   ffffffff bfffffff 80000001 00000000 00000001 3ffffffff 7fffffff
        ffffffff     True     True     True    False     True     True     True
        bfffffff     True     True     True    False    False     True     True
        80000001     True     True     True    False    False     True     True
        00000000    False    False    False    False    False     True    False
        00000001     True    False    False    False    False     True    False
        ffffffff     True     True     True     True     True     True     True
        7fffffff     True     True     True    False    False     True    False
Sign extend the value to 512 bits and check the result can be represented in 256 . Following there is a 32 bit excerpt of this condition :