Artur you can use something like
nulldata 100
genr x=normal(0,1)
genr f=1/(1+exp(-x))
genr g=exp(x)/(1+exp(x)) # f = g
genr d=f-g # should be a series of 0
d = abs(d)<0.00001 ? 0 : d
print d
summary d
Yiannis
Στις Τετ, 28 Οκτ 2020 στις 3:45 μ.μ., ο/η Artur Bala <
artur.bala.tn(a)gmail.com> έγραψε:
Hi,
Is it possible to "force" Gretl to show/compute simply a "0" instead
of a
"1.1102e-16"?
For example, in the script below the d series holds, in theory, nothing
else but 0-s but in practice it still holds some kinds of "1.1e-17"
numbers
nulldata 100
genr x=normal(0,1)
genr f=1/(1+exp(-x))
genr g=exp(x)/(1+exp(x)) # f = g
genr d=f-g # should be a series of 0
print d
summary d
Best,
Artur
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