-function for instance. (In essence the function first checks if there
-is a pole at the evaluation point and falls back to Taylor expansion if
-there isn't. Then, the pole is regularized by some suitable
-transformation.) Also, the new function needs to be declared somewhere.
-This may also be done by a convenient preprocessor macro:
+(@code{tgamma}) function for instance. (In essence the function first
+checks if there is a pole at the evaluation point and falls back to
+Taylor expansion if there isn't. Then, the pole is regularized by some
+suitable transformation.) Also, the new function needs to be declared
+somewhere. This may also be done by a convenient preprocessor macro: