Internals

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Calculator Internals
--------------------

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 `autoload's 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.

Because `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.
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