Adding and resizing in one step

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Hi,

Is there a way to add two unsigned numbers and extract only the x most significant bits from it in one step?

I want something like this:

sum <= resize(number1 + number2,4)

Instead of:

temp <= number1 + number2

sum <= temp(7 downto 4)

The existing resize function in numeric_std drops the msb's, I want the lsb's dropped.

Thanks in advance!

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assuming you are using type 'unsigned'

sum <= to_unsigned( (to_integer(number1)+to_integer(number2)) / 16 , 4) ;

but this works even nicer :

sum <= unsigned( number21 + number22 )(7 downto 4) ;