* whether .ac works for freq=0
*
* (exec-spice "ngspice -b %s" t)

v1  1 0  dc=0 ac=1
r1  1 2  1k
l1  2 3  1uH
r3  3 0  1k
c3  3 0  1uF

.control

ac lin 1 0Hz 0Hz

let v3_gold = 0.5

let err = abs(v(3)/v3_gold - 1)

if err > 1e-15
  echo "ERROR: test failed, excessive error, err = $&err"
  quit 1
else
  echo "INFO: success"
  quit 0
end

.endc