Function: math-mul-mats

math-mul-mats is an autoloaded and byte-compiled function defined in calc-mtx.el.gz.

Signature

(math-mul-mats A B)

Source Code

;; Defined in /usr/src/emacs/lisp/calc/calc-mtx.el.gz
;;; Multiply matrices A and B.  [V V V]
(defun math-mul-mats (a b)
  (let ((mat nil)
	(cols (length (nth 1 b)))
	row col ap bp accum)
    (while (setq a (cdr a))
      (setq col cols
	    row nil)
      (while (> (setq col (1- col)) 0)
	(setq ap (cdr (car a))
	      bp (cdr b)
	      accum (math-mul (car ap) (nth col (car bp))))
	(while (setq ap (cdr ap) bp (cdr bp))
	  (setq accum (math-add accum (math-mul (car ap) (nth col (car bp))))))
	(setq row (cons accum row)))
      (setq mat (cons (cons 'vec row) mat)))
    (cons 'vec (nreverse mat))))