From: Simon Ruderich <simon@ruderich.org>
Date: Thu, 23 Jun 2011 14:49:29 +0000 (+0200)
Subject: maxima: Add norm() which calculates the euclid norm.
X-Git-Url: https://ruderich.org/simon/gitweb/?a=commitdiff_plain;h=f87a6876f08d7704d17345ea5dbed7cb77887aea;p=config%2Fdotfiles.git

maxima: Add norm() which calculates the euclid norm.
---

diff --git a/maxima/maxima-init.mac b/maxima/maxima-init.mac
index df7c66b..045a258 100644
--- a/maxima/maxima-init.mac
+++ b/maxima/maxima-init.mac
@@ -13,6 +13,9 @@ load (descriptive);
 
 /* CUSTOM FUNCTIONS */
 
+/* Didn't find any euclid norm in Maxima, so here it is. */
+norm(x) := sqrt(transpose(x) . x);
+
 /* Maxima's norm() can't calculate the 2-norm. Only works for non-complex
  * matrices. */
 norm_2(x) := sqrt(maxi(eigenvalues(transpose(x) . x)[1]));