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-rw-r--r--macros/sos2zp.sci1
1 files changed, 1 insertions, 0 deletions
diff --git a/macros/sos2zp.sci b/macros/sos2zp.sci
index 1f0f335..4d9233b 100644
--- a/macros/sos2zp.sci
+++ b/macros/sos2zp.sci
@@ -23,6 +23,7 @@ function [z,p,k] = sos2zp (sos, g)
// -0.6250 + 1.0533i
// -0.6250 - 1.0533i
//c = 1
+
if(argn(2)<1 | argn(2)>2)
error("Wrong number of input arguments.")
end