From e46e5eee74af75aa1123b2370ff2f4587f4adc2a Mon Sep 17 00:00:00 2001 From: Elizabeth Hunt Date: Mon, 9 Oct 2023 21:37:44 -0600 Subject: flatten directory structure to appease dr koebbe --- src/approx/derivative.lisp | 17 ----------------- 1 file changed, 17 deletions(-) delete mode 100644 src/approx/derivative.lisp (limited to 'src/approx/derivative.lisp') diff --git a/src/approx/derivative.lisp b/src/approx/derivative.lisp deleted file mode 100644 index 8aa171a..0000000 --- a/src/approx/derivative.lisp +++ /dev/null @@ -1,17 +0,0 @@ -(in-package :lizfcm.approx) - -(defun central-derivative-at (f x &optional (delta 0.01)) - (let* ((x2 (+ x delta)) - (x1 (- x delta)) - (y2 (apply f (list x2))) - (y1 (apply f (list x1)))) - (/ (- y2 y1) - (- x2 x1)))) - -(defun fwd-derivative-at (f x &optional (delta 0.01)) - (let* ((x2 (+ x delta)) - (x1 x) - (y2 (apply f (list x2))) - (y1 (apply f (list x1)))) - (/ (- y2 y1) - (- x2 x1)))) -- cgit v1.2.3-70-g09d2