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R1448/ChiBenchmark/lenstoolchi/perl/theta2chi.sh
c99f2e455a51lenstool-mixed

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theta2chi.sh
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# ksi = (a*a-b*b)/(a*a+b*b) (cos(2theta) + i sin(2theta))
awk '/#/ {print} !/#/ {q=$5/$4;e=(1-q*q)/(1+q*q);t=$6*3.145927/180;e1=e*cos(2*t);e2=e*sin(2*t);$4=e1;$5=e2;$6=e;print}' $1
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