set term svg background rgb "white"
set out "Gamma-error.svg"
set log y
set format y "%g"
set title "Relative error of our homemade Gamma function"
set xlabel "x"
set ylabel "abs(gamma-truegamma)/truegamma"
set grid
plot [][] "out.gamma.error.txt" using ($1):(abs(($2-$3)/$3)) with lines