Re: [ng-spice] Rework-13
Le Mon, 06 Nov 2000, vous avez ecrit
% > On Mon, 6 Nov 2000, routoure Jean-Marc wrote:
% >
% > > Hi,
% > >
% > > Does the deriv function has been added ?
% >
% > Can you explain better ?
% > Paolo
yes, when I do a dc analysis for instance, the differential of a vector (say
v(1) ) can be define by :
let dd=deriv(v(1))
Here is its definition in the doc :
deriv(vector) Calculates the derivative of the given
vector. This uses numeric differentia-
tion by interpolating a polynomial and
may not produce satisfactory results
(particularly with iterated differentia-
tion). The implementation only cacu-
lates the dirivative with respect to the
real componant of that vector's scale.
This king of function has been removed from the source in the ngspice-rework12
or may be before: the source of this function can be found in
src/maths/cmaths/cmath4.c.
JM
jm
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