urdhva triyagbhyam vedic multiplier hdl code

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Hi i am pandurang i would like to get details on vhdl code of 4*4 digit urdhva triyagbhyam vedic multiplier. I studying in final year of engineering & we are working on vedic multliplier. . so i need help for vhdl code of  4*4 digit multiplier using  urdhva triyagbhyam vedic  sutra