regression test temper-2.cir, temper sweep with 'temper' in a model parameter

* check invocation of CKTtemp() in DCtrCurv()

.model dtest D is='1e-12 * temper'
.model dfix  D is='1e-12'

v1  1 0  dc 5v
r1  1 2  5k

d_test  2 3  dtest
v_test  3 0  dc=0

d_fix   2 4  dfix
v_fix   4 0  dc=0

.control

let success_count = 0

dc temp 10 100 10.0

let val = i(v_test)/i(v_fix)
let gold = "temp-sweep"

let err = vecmax(abs(val/gold - 1))

echo "Note: err =" $&err
if err > 1e-6
  echo "ERROR: test failed"
else
  echo "INFO: success"
  let success_count = success_count + 1
end

if success_count ne 1
  quit 1
else
  quit 0
end

.endc

.end