* src/ngspice.c src/devices/dev.c: Moved AN_* defines to

dev.c.

	* src/analysis/cktpzset.c: Removed unused code.

	* tests/polezero/.cvsignore tests/polezero/Makefile.am
	tests/polezero/filt_multistage.cir
	tests/polezero/filt_multistage.out tests/polezero/filt_rc.cir
	tests/polezero/filt_rc.out: New files to test pole zero
	operations.

	* configure.in tests/Makefile.am: Updated for new files.

tests/polezero/.cvsignore

@@ -0,0 +1,2 @@
+Makefile.in
+Makefile

tests/polezero/Makefile.am

@@ -0,0 +1,13 @@
+## Process this file with automake to produce Makefile.in
+
+TESTS = \
+	filt_multistage.cir	\
+	filt_rc.cir
+
+TESTS_ENVIRONMENT = $(SHELL) $(srcdir)/../check.sh $(top_builddir)/src/ngspice
+
+EXTRA_DIST = \
+	$(TESTS)		\
+	$(TESTS:.cir=.out)
+
+MAINTAINERCLEANFILES = Makefile.in

tests/polezero/filt_multistage.cir

@@ -0,0 +1,13 @@
+Multistage filter
+v1 1 0 0 ac 1.0
+r1 1 2 1k
+c1 2 0 10p
+e2 3 0 2 0 10
+r2 3 4 1k
+c2 4 0 1.25p
+e3 5 0 4 0 10
+r3 5 6 1k
+c3 6 0 .02p
+.pz 1 0 6 0 vol pz
+.print pz all
+.end

tests/polezero/filt_rc.cir

@@ -0,0 +1,7 @@
+RC filter
+v1 1 0 0 ac 1.0
+r1 1 2 1k
+c1 2 0 10p
+.pz 1 0 2 0 vol pz
+.print pz all
+.end