From 8d11c6c8213f46f0fa19826917c255edd5d43cb1 Mon Sep 17 00:00:00 2001 From: mzuenni Date: Sun, 28 Jul 2024 22:54:40 +0200 Subject: Test (#4) * update * moved content in subdir * rename file * add test setup * add test setup * add github action * automaticly test all cpp files * timeout after 10s * setulimit and dont zero memory * test build pdf * install latexmk * update * update * ngerman * fonts * removed old code * add first test * added tests * test in sorted order * more tests * simplified test * more tests * fix suffix tree * fixes and improvements * done ust lst directly * fix swap * add links to pdf * fix constants * add primorial * add comment * various improvements * more tests * added missing stuf * more tests * fix tests * more tests * more tests * more tests * fix recursion? * test trie * more tests * only use python temporarily for listings * only use python temporarily for listings * more tests * fix longestCommonSubstring * more tests * more tests * made code more similiar * fix? * more tests * more tests * more tests * add ahoCorasick test + limit 4GB stack size * more tests * fix test * add additional test * more tests * more tests * fix? * better fix * fix virtual tree * more tests * more tests * recursive closest pair * more tests * decrease limit * new tests * more tests * fix name * more tests * add test * new test * more tests * more tests * more tests * more tests * new test and content * new code * new code * larger tests * fix and test * new test * new test * update pdf * remove comments * new test * more tests * more testcases * more tests * increased limit * more tests * more tests * more tests * new tests * more tests * shortened code * new test * add basic tests for bigint * more tests * removed old files * new test * ignore some files * more auto more ccw * fix test * more tests * fix * new tests * more tests * more tests * stronger test * actually verify delaunay... * more tests * fix header * more tests * run tests parallel? * test parralel? * add --missing * separate workflows * test * is the pdf checked? * separate workflows * fix workflow * more workflows --------- Co-authored-by: Yidi --- content/math/gauss.cpp | 36 ++++++++++++++++++++++++++++++++++++ 1 file changed, 36 insertions(+) create mode 100644 content/math/gauss.cpp (limited to 'content/math/gauss.cpp') diff --git a/content/math/gauss.cpp b/content/math/gauss.cpp new file mode 100644 index 0000000..8129fd2 --- /dev/null +++ b/content/math/gauss.cpp @@ -0,0 +1,36 @@ +void normalLine(int line) { + double factor = mat[line][line]; + for (double& x : mat[line]) x /= factor; +} + +void takeAll(int n, int line) { + for (int i = 0; i < n; i++) { + if (i == line) continue; + double diff = mat[i][line]; + for (int j = 0; j < sz(mat[i]); j++) { + mat[i][j] -= diff * mat[line][j]; +}}} + +int gauss(int n) { + vector done(n, false); + for (int i = 0; i < n; i++) { + int swappee = i; // Sucht Pivotzeile für bessere Stabilität. + for (int j = 0; j < n; j++) { + if (done[j]) continue; + if (abs(mat[j][i]) > abs(mat[i][i])) swappee = j; + } + swap(mat[i], mat[swappee]); + if (abs(mat[i][i]) > EPS) { + normalLine(i); + takeAll(n, i); + done[i] = true; + }} + // Ab jetzt nur checks bzgl. Eindeutigkeit/Existenz der Lösung. + for (int i = 0; i < n; i++) { + bool allZero = true; + for (int j = i; j < n; j++) allZero &= abs(mat[i][j]) <= EPS; + if (allZero && abs(mat[i][n]) > EPS) return INCONSISTENT; + if (allZero && abs(mat[i][n]) <= EPS) return MULTIPLE; + } + return UNIQUE; +} -- cgit v1.2.3