upper part (i.e. continuous with quadrant II). The inverse
trigonometric and hyperbolic functions are not defined for complex
arguments by the C++ standard, however. Here, we follow the conventions
-used by CLN, which in turn follow the carefully structured definitions
+used by CLN, which in turn follow the carefully designed definitions
in the Common Lisp standard. Hopefully, future revisions of the C++
standard incorporate these functions in the complex domain in a manner
compatible with Common Lisp.