Syntax: |
FIT\TOLERANCE eps y=expression
|
The \TOLERANCE qualifier allows the user to specify the fitting tolerance,
which has a default value of 0.00001
. This value is used in
calculating the central difference formula for the partial derivatives, that
is, ∂f(x,p)/∂p
is approximated by
[f(x,p(1+ε))-f(x,p(1-ε))]/[2pε]
where ε
is the tolerance parameter, eps
.
This value is also used to determine when the fit is successful.