Parent Directory | Revision Log | Patch
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 | |
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# | 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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