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Forum: FPGA, VHDL & Verilog check lsb in vhdl

von basma (Guest)

2014-02-22 16:47

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hi all;
i want to detect if the lsb is odd or even for integer data . how can i 
do it in vhdl code

von Marius S. (lupin)

2014-02-22 17:26

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You can use the "mod" operator.

http://www.csee.umbc.edu/portal/help/VHDL/operator.html

if (myinteger mod 2 = 1) then
  -- odd
else
  -- even
end if;


Alternatively you can first convert to unsigned type and then check the 
lowest bit.

myunsigned <= to_unsigned(myinteger, length);
if (myunsigned(0) = '1') then
 -- odd
else
 -- even
end if;

2014-02-22 17:27: Edited by User

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