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 --- test/math/linearCongruence.cpp | 53 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 53 insertions(+) create mode 100644 test/math/linearCongruence.cpp (limited to 'test/math/linearCongruence.cpp') diff --git a/test/math/linearCongruence.cpp b/test/math/linearCongruence.cpp new file mode 100644 index 0000000..ba8eeac --- /dev/null +++ b/test/math/linearCongruence.cpp @@ -0,0 +1,53 @@ +#include "../util.h" +#include +#include +#include + +ll naive(ll a, ll b, ll m) { + for (ll x = 0; x < m; x++) { + if ((a * x) % m == b) return x; + } + return -1; +} + +void stress_test() { + ll work = 0; + ll positive = 0; + for (ll tries = 0; tries < 500'000; tries++) { + ll m = Random::integer(0, 1'000); + ll a = Random::integer(0, m); + ll b = Random::integer(0, m); + + ll got = solveLinearCongruence(a, b, m); + ll expected = naive(a, b, m); + + if (got != expected) cerr << "got: " << got << ", expected: " << expected << endl; + work++; + if (got >= 0) positive++; + } + cerr << "stress tested: " << work << " (" << positive << ")" << endl; +} + +constexpr int N = 500'000; +void performance_test() { + timer t; + hash_t hash = 0; + for (int operations = 0; operations < N; operations++) { + ll m = Random::integer(0, 1'0000'000'000); + ll a = Random::integer(0, m); + ll b = Random::integer(0, m); + + t.start(); + hash += solveLinearCongruence(a, b, m); + t.stop(); + } + if (t.time > 500) cerr << "too slow: " << t.time << FAIL; + cerr << "tested performance: " << t.time << "ms (hash: " << hash << ")" << endl; +} + + +int main() { + stress_test(); + performance_test(); +} + -- cgit v1.2.3