digital design using vhdl

[Altera_Forum]

is any vhdl operators to calculate the power of numbers...... 

plz help me.. very urgent

[Altera_Forum]

in VHDL you can use the ** operator to get x^y 

 like this:  a <= b ** c; where a, b and c are all integer.  But if you want to synthesize it, one of either the B or C values needs to be a constant.

[Altera_Forum]

Thank u sir. 

One more doubt is any symblols to do logical operations like and or exor like C programming....     greetings sir

[Altera_Forum]

a <= b xor c; 

 but you cant do logic operations on integers, because they are not logic types. you have to do them on std_logic/vector/signed/unsigned.