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kos59125/poisson.sh

Created August 11, 2015 15:25
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Generates a random number on Poisson distribution
Raw
poisson.sh
#!/bin/bash
LAMBDA=$1
X=0
V=0
while [ `echo "$V <= $LAMBDA" | bc` -eq 1 ]
do
W=`echo "$V - l(1 - $RANDOM / 32768)" | bc -l`
V=$W
X=`expr $X + 1`
done
echo $X
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