Avoid corner cases in mixed calculations with 'complex'.

See python/cpython#119839

Author: scoder

CHANGES.rst

@@ -9,12 +9,16 @@ ChangeLog
 * Generally use ``.as_integer_ratio()`` in the constructor if available.
   https://github.com/python/cpython/pull/120271
 
-* Using ``complex`` numbers in division shows better tracebacks.
-  https://github.com/python/cpython/pull/102842
-
 * Mixed calculations with other ``Rational`` classes could return the wrong type.
   https://github.com/python/cpython/issues/119189
 
+* In mixed calculations with ``complex``, the Fraction is now converted to ``float``
+  instead of ``complex`` to avoid certain corner cases in complex calculation.
+  https://github.com/python/cpython/pull/119839
+
+* Using ``complex`` numbers in division shows better tracebacks.
+  https://github.com/python/cpython/pull/102842
+
 
 1.18 (2024-04-03)
 -----------------

src/quicktions.pyx

@@ -1494,7 +1494,7 @@ cdef forward(a, b, math_func monomorphic_operator, pyoperator, handle_complex=Tr
     elif isinstance(b, float):
         return pyoperator(_as_float(an, ad), b)
     elif handle_complex and isinstance(b, complex):
-        return pyoperator(complex(a), b)
+        return pyoperator(float(a), b)
     else:
         return NotImplemented
 
@@ -1508,7 +1508,7 @@ cdef reverse(a, b, math_func monomorphic_operator, pyoperator, handle_complex=Tr
     elif isinstance(a, Real):
         return pyoperator(float(a), _as_float(bn, bd))
     elif handle_complex and isinstance(a, Complex):
-        return pyoperator(complex(a), complex(b))
+        return pyoperator(complex(a), float(b))
     else:
         return NotImplemented