This section describes the Lisp functions defined by the Calculator that
may be of use to user-written Calculator programs (as described in the
rest of this chapter). These functions are shown by their names as they
conventionally appear in
defmath. Their full Lisp names are
generally gotten by prepending ‘calcFunc-’ or ‘math-’ to their
apparent names. (Names that begin with ‘calc-’ are already in
their full Lisp form.) You can use the actual full names instead if you
prefer them, or if you are calling these functions from regular Lisp.
The functions described here are scattered throughout the various
Calc component files. Note that calc.el includes
for only a few component files; when Calc wants to call an advanced
function it calls ‘(calc-extensions)’ first; this function
autoloads calc-ext.el, which in turn autoloads all the functions
in the remaining component files.
defmath itself uses the extensions, user-written code
generally always executes with the extensions already loaded, so
normally you can use any Calc function and be confident that it will
be autoloaded for you when necessary. If you are doing something
special, check carefully to make sure each function you are using is
from calc.el or its components, and call ‘(calc-extensions)’
before using any function based in calc-ext.el if you can't
prove this file will already be loaded.