# sympy__sympy-21627
# Loki Mode Multi-Agent Patch
# Attempts: 1

--- a/sympy/functions/elementary/complexes.py
+++ b/sympy/functions/elementary/complexes.py
@@ -613,10 +613,13 @@ def eval(cls, arg):
             return arg
         if arg.is_extended_negative:
             return -arg
+        if arg.is_extended_real:
+            return
         # handle what we can
         from sympy.functions.elementary.exponential import exp, log
         from sympy.functions.elementary.hyperbolic import cosh, sinh
         _arg = arg
+        conj = None
         if arg.is_zero is False:
             conj = arg.conjugate()
             if conj == arg or conj == -arg:
@@ -636,7 +639,7 @@ def eval(cls, arg):
                         return sqrt(re**2 + im**2)
                     _arg = arg
         # have to set _arg to something other than arg
-        if _arg != conj or _arg != -conj:
+        if conj is not None and _arg not in (conj, -conj):
             _arg = cls(arg, evaluate=False)
         return _arg