DeMorgan transformations

From Sidvind

Initial expression	Code	Equivalent expression	Code
not A and not B	!A && !B	not ( A or B )	!( A || B )
not A and B	!A && B	not ( A or not B )	!( A || !B )
A and not B	A && !B	not ( not A or B )	!( !A || B )
A and B	A && B	not ( not A or not B )	!( !A || !B )
not A or not B	!A || !B	not ( A and B )	!( A && B )
not A or B	!A || B	not ( A and not B )	!( A && !B )
A or not B	A || !B	not ( not A and B )	!( !A && B )
A or B	A || B	not ( not A and not B )	!( !A && !B )