[Gnuplot-bugs] bug in division

[P. K. <p.a...@go...>]

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Hello!

I just downloaded gnuplot 4.4 patchlevel 2 and am having the following
weird problem: I have two variables V=2 and L=20 and if I try to divide
V by L, the result is 0. I had to pick the whole script apart until I
found it - the desired outcome of this command is of course the output 0.1.

Here is the script:
#######
set terminal png transparent size 1200,800 enhanced
set xtics 0.1
set grid xtics ytics mxtics mytics
set output 'U_vs_s.png'
set key left top
set key box linestyle 1
set xlabel 's'
set ylabel 'U(s)'

# Halfwidth of strip in m
a=2
# Strip width in m
w=2*a
# Strip thickness in m
d=2e-3
#Voltage in V
V=2
# Width of simulation box in m
L=20
# Speed of light in m/s
c=2.99792458e8
# Permeability constant
mu0=4*pi*1e-7
# Permittivity
eps0=1/(mu0*(c**2))

# ANSYS fitting
Kx=pi*(V/L)*eps0
KCorrX=7.293e-3
y1=(8*(c**2))
y2=(w*d)
y3=V/L # Here this strange error occurs
set label 'y1=%10.5e',y1 at graph 0.01, graph 0.87
set label 'y2=%10.5e',y2 at graph 0.01, graph 0.84
set label 'y3=%10.5e',y3 at graph 0.01, graph 0.81
# the former line outputs "y3=0.00000e+000"
#Ky=y1/y2
KCorrY=1.413

plot 'Uac.dat' using ($1):($3) title 'data' w p 1
#######

Is this indeed a bug or am I doing something exceptionally stupid?

Thanks in advance for looking into the matter.

Kind regards,

P. Krüger
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