temperature and simulation

Hi Al.

there are some issues with temperature which i'm not sure how to fix.
the results i get when running the attached files seem wrong.

there is a temperature dependent resistor
rtemp 2 0 t1 (w=1 l=1)
.model t1 r tnom=0 rsh=1 tc2=0 tc1=1

and a command like
.dc temp=2

as it seems, the temperature within rtemp is computed during
_sim->init(), which is called from s__init.cc _before_ setup().
that said, a workaround might be to call setup first, and also change
DC::setup to set _sim->_temp_c after the options() call.

appearently something different is intended within s_dc.cc, when it
comes to sweeps over temperture ranges or to fixing the set__value
pointer hack.

i doubt it is appropriate to call init() before each invocation of
solve_with_homotopy. but what about (ab?)using precalc_last for
parameter placements like this? better ideas?

thanks for your help
felix

PS: yes i've found that old thread from 2011 about the missing
precalc_first call. that seems fix a different issue.

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spice
.options temp=1
rtemp 2 0 t1 (w=1 l=1)
.model t1 r tnom=0 rsh=1 tc2=0 tc1=1

.print dc r(rtemp) temp(0)

.dc temp=2
.dc
.dc temp=3
.dc
.dc dtemp=10

.options temperature=20
.dc dtemp=0

.end

spice
.options temp=1
rtemp 2 0 t1 (w=1 l=1)
.model t1 r tnom=0 rsh=1 tc2=0 tc1=1

.print tran r(rtemp) temp(0)

.tran 0 1 1 temp=2
.tran 0 1 1
.tran 0 1 1 temp=3
.tran 0 1 1
.tran 0 1 1 dtemp=10
.end