Hi EDA Users,

[vakaspr3]

Swapping 2 values without using 3rd variable..??? Want to know.. Reply soon

 

[rajavel.rv]

just take a two variable a and b; a=5; b=2;

coding:
a <= a + b; a(7) <= a(5) + b(2);
b <= a - b; b(5) <= a(7) - b(2);
a <= a - b; a(2) <= a(7) - b(5);

and check the output msb bit if is "HIGH" means the value in negative; if its happen means take the 2's complement of that value

Regards
rajavel.rv