Add TF __truediv__ and __rtruediv__

sdahdah · sdahdah · commit 7aaf3552c658 · 2024-12-13T15:10:01.000-05:00
diff --git a/control/xferfcn.py b/control/xferfcn.py
@@ -747,6 +747,11 @@ def __truediv__(self, other):
         else:
             other = _convert_to_transfer_function(other)
 
+        # Special case for SISO ``other``
+        if not self.issiso() and other.issiso():
+            other = append(*([other**-1] * self.noutputs))
+            return self * other
+
         if (self.ninputs > 1 or self.noutputs > 1 or
                 other.ninputs > 1 or other.noutputs > 1):
             raise NotImplementedError(
@@ -770,6 +775,11 @@ def __rtruediv__(self, other):
         else:
             other = _convert_to_transfer_function(other)
 
+        # Special case for SISO ``self``
+        if self.issiso() and not other.issiso():
+            promoted_self = append(*([self**-1] * other.ninputs))
+            return other * promoted_self
+
         if (self.ninputs > 1 or self.noutputs > 1 or
                 other.ninputs > 1 or other.noutputs > 1):
             raise NotImplementedError(
