how to do division in VHDL

[xilinx1001]

Hi,

How can I do division in VHDL?

Is there any other method of doing division in VHDL other than right shifting?



Regards
xilinx1001

 

[ninju]

Repeated subtraction is one method i can think of. There are a lot of dedicated algorithms.

Look up tables too is possible.

 

[xilinx1001]

Repeated subtraction is one method i can think of. There are a lot of dedicated algorithms.

Look up tables too is possible.

Hi,

Thanks for ur reply

Can ou please give me the link for division by repeated substraction in VHDL


Regards
xilinx1001

 

[rahdirs]

How can I do division in VHDL?

• If you have newer version of Xilinx,you can use numeric_std package & use '/' operator. The division operator is recognized by ieee.numeric_std.I am not sure if you can use this package with older versions of Xilinx.
• numeric_std is valid only if your inputs are of datatypes UNSIGNED/SIGNED/NATURAL/ INTEGER.
• With the old synopsys libraries, division is however suppported for integer datatype, so maybe you can conversions if that is simple for you.

 

[xilinx1001]

Hi,

Thanks for your reply. I am using older version of xilinx. I need to do use a number like 2500000 for division. This number exceeds integer range. How can I use division for this number without initializing it as integer?

Regards
Vivek Alaparthi