Linear Feedback Shift Register

lfsr.go

package lfsr

import (
)

type LFSR struct {
	buf int32
}

func NewLFSR() (r *LFSR) {
	r = new(LFSR)
	r.buf = 5;
	return
}

func (r* LFSR) Read(p []byte) (n int, err error) {
	n = 0
	err = nil
	for ; n < len(p); n++ {
		p[n] = byte(r.buf)
		r.buf = r.buf >> 1
		r.buf += ((r.buf & 1) << 31) ^ ((r.buf & 4) << 29)
	}
	return 
}