/[emacs]/emacs/lisp/calc/calc-mtx.el
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revision 1.3 by walters, Mon Nov 19 07:37:12 2001 UTC revision 1.4 by pj, Thu Dec 20 18:49:42 2001 UTC
# Line 219  Line 219 
219        (math-det-step (1- n) (math-mul prod (nth n (nth n lu))))        (math-det-step (1- n) (math-mul prod (nth n (nth n lu))))
220      prod))      prod))
221    
222  ;;; This returns a list (LU index d), or NIL if not possible.  ;;; This returns a list (LU index d), or nil if not possible.
223  ;;; Argument M must be a square matrix.  ;;; Argument M must be a square matrix.
224  (defvar math-lud-cache nil)  (defvar math-lud-cache nil)
225  (defun math-matrix-lud (m)  (defun math-matrix-lud (m)

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