teseco [TASK]: add test case for new feature

src/ts/wf/testcases/Makefile.teseco

@@ -28,19 +28,38 @@
 # ============================================================================
 #
 # test teseco
+# -----------
+#
+# create test signals
 t1_sig.xxx.sff:
 	/bin/rm -fv $@
 	tesiff $@
+# plot test signals
 t1_sig.xxx.ps: t1_sig.xxx.sff
 	stuplo -d $@/cps -t -a -s x -i -Y 0.6 -V -c fTdtF \
         -X "Zeit (UT)" -l 3,2,1 -h 1.,1.,1.4,1.3 $<
+
+# tests are based on traces 3, 4, and 5
+
+# subtract 3, 4, and 5 from each of the traces
+# three traces are output (numbers are signals in t1_sig.xxx.sff)
+# out_1 = 3 - 3 - 4 - 5 = -4 -5
+# out_2 = 4 - 3 - 4 - 5 = -3 -5
+# out_3 = 5 - 3 - 4 - 5 = -3 -4
 t1_teseco1.xxx.sff: t1_sig.xxx.sff
 	teseco -v -o $@ $< t:3-5 $< t:3,5 $< t:4
+
+# subtract scaled versions
 t1_teseco2.xxx.sff: t1_sig.xxx.sff
 	teseco -v -o $@ $< t:3-5 $< f:-3. t:5 $< f:0.7 t:4 $< t:3 f:0.7
-t1_teseco1.xxx.ps t1_teseco2.xxx.ps: \
+
+# add traces
+t1_teseco3.xxx.sff: t1_sig.xxx.sff
+	teseco -v -o -a $@ $< t:3 f:0.1 $< f:2. t:4 $< f:-5.0 t:5 
+
+t1_teseco1.xxx.ps t1_teseco2.xxx.ps t1_teseco3.xxx.ps: \
   t1_teseco%.xxx.ps: t1_sig.xxx.sff t1_teseco%.xxx.sff
-	stuplo -d $@/cps -t -a -s x -i -Y 0.6 -V -c fTdtF \
+	stuplo -d $@/cps -t -a -s x -i -Y 0.6 -V -c fTdtF -g \
         -X "Zeit (UT)" -l 3,2,1 -h 1.,1.,1.4,1.3 -C \
         $(word 1,$^) t:3-5 nc: $(word 2,$^)