defmath

defmath is an autoloaded Lisp macro in `calc.el'.

(defmath FUNC ARGS &rest BODY)

Define Calc function.

Like `defun' except that code in the body of the definition can
make use of the full range of Calc data types and the usual
arithmetic operations are converted to their Calc equivalents.

The prefix `calcFunc-' is added to the specified name to get the
actual Lisp function name.

See Info node `(calc)Defining Functions'.