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| author | Elizabeth Hunt <elizabeth.hunt@simponic.xyz> | 2023-09-25 10:36:23 -0600 |
|---|---|---|
| committer | Elizabeth Hunt <elizabeth.hunt@simponic.xyz> | 2023-09-25 10:36:23 -0600 |
| commit | 58c73fd511b77cb94124b71a4bb75c7ab6a6d8bc (patch) | |
| tree | 25ae52afe365de29973efbb10fdecf2712deb430 /cl/src/approx | |
| parent | 2e284b71500a1f8dc6cc46ecf21eb1e9389ea780 (diff) | |
| download | cmath-58c73fd511b77cb94124b71a4bb75c7ab6a6d8bc.tar.gz cmath-58c73fd511b77cb94124b71a4bb75c7ab6a6d8bc.zip | |
add september notes & hw2 code / pdf
Diffstat (limited to 'cl/src/approx')
| -rw-r--r-- | cl/src/approx/maceps.lisp | 13 | ||||
| -rw-r--r-- | cl/src/approx/package.lisp | 3 |
2 files changed, 15 insertions, 1 deletions
diff --git a/cl/src/approx/maceps.lisp b/cl/src/approx/maceps.lisp new file mode 100644 index 0000000..cd24482 --- /dev/null +++ b/cl/src/approx/maceps.lisp @@ -0,0 +1,13 @@ +(in-package :lizfcm.approx) + +(defun compute-maceps (val f) + (let* ((h val) + (a val) + (err val)) + (loop while (> err 0) + do + (progn + (setf h (/ h 2) + err (abs (- (funcall f (+ a h)) + (funcall f a))))) + collect (list a h err)))) diff --git a/cl/src/approx/package.lisp b/cl/src/approx/package.lisp index 60dd0bb..c11eb60 100644 --- a/cl/src/approx/package.lisp +++ b/cl/src/approx/package.lisp @@ -1,4 +1,5 @@ (in-package :cl-user) (defpackage lizfcm.approx (:use :cl) - (:export :derivative-at)) + (:export :derivative-at + :compute-maceps)) |