X-Git-Url: https://www.ginac.de/ginac.git//ginac.git?p=ginac.git;a=blobdiff_plain;f=check%2Ftime_lw_C.cpp;h=70960ad91bcf7d7468c6d093eeb8e60ef2987c75;hp=dbb128ddb255352f22aed47f6a87f6a2a7c62dcd;hb=1d07d8ac9fb47c51aa19a84df6c8c5fee5dd5105;hpb=a54293fb33b252ca926cd1aba18faacb0f16688a diff --git a/check/time_lw_C.cpp b/check/time_lw_C.cpp index dbb128dd..70960ad9 100644 --- a/check/time_lw_C.cpp +++ b/check/time_lw_C.cpp @@ -4,7 +4,7 @@ * Lewis and Michael Wester. */ /* - * GiNaC Copyright (C) 1999-2000 Johannes Gutenberg University Mainz, Germany + * GiNaC Copyright (C) 1999-2003 Johannes Gutenberg University Mainz, Germany * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by @@ -25,47 +25,47 @@ static unsigned test(void) { - numeric x(13*17*31); - numeric y(13*19*29); - - for (int i=1; i<200; ++i) - gcd(pow(x,300+(i%181)),pow(y,200+(i%183))); - - ex lastgcd = gcd(pow(x,300+(200%181)),pow(y,200+(200%183))); - if (lastgcd != numeric("53174994123961114423610399251974962981084780166115806651505844915220196792416194060680805428433601792982500430324916963290494659936522782673704312949880308677990050199363768068005367578752699785180694630122629259539608472261461289805919741933")) { - clog << "gcd(" << x << "^" << 300+(200%181) << "," - << y << "^" << 200+(200%183) << ") erroneously returned " - << lastgcd << endl; - return 1; - } - return 0; + numeric x(13*17*31); + numeric y(13*19*29); + + for (int i=1; i<200; ++i) + gcd(pow(x,300+(i%181)),pow(y,200+(i%183))); + + ex lastgcd = gcd(pow(x,300+(200%181)),pow(y,200+(200%183))); + if (lastgcd != numeric("53174994123961114423610399251974962981084780166115806651505844915220196792416194060680805428433601792982500430324916963290494659936522782673704312949880308677990050199363768068005367578752699785180694630122629259539608472261461289805919741933")) { + clog << "gcd(" << x << "^" << 300+(200%181) << "," + << y << "^" << 200+(200%183) << ") erroneously returned " + << lastgcd << endl; + return 1; + } + return 0; } unsigned time_lw_C(void) { - unsigned result = 0; - unsigned count = 1; - timer rolex; - double time = .0; - - cout << "timing Lewis-Wester test C (gcd of big integers)" << flush; - clog << "-------Lewis-Wester test C (gcd of big integers)" << endl; - - rolex.start(); - // correct for very small times: - do { - result = test(); - ++count; - } while ((time=rolex.read())<0.1 && !result); - cout << '.' << flush; - - if (!result) { - cout << " passed "; - clog << "(no output)" << endl; - } else { - cout << " failed "; - } - cout << int(1000*(time/count))*0.001 << 's' << endl; - - return result; + unsigned result = 0; + unsigned count = 0; + timer rolex; + double time = .0; + + cout << "timing Lewis-Wester test C (gcd of big integers)" << flush; + clog << "-------Lewis-Wester test C (gcd of big integers):" << endl; + + rolex.start(); + // correct for very small times: + do { + result = test(); + ++count; + } while ((time=rolex.read())<0.1 && !result); + cout << '.' << flush; + + if (!result) { + cout << " passed "; + clog << "(no output)" << endl; + } else { + cout << " failed "; + } + cout << int(1000*(time/count))*0.001 << 's' << endl; + + return result; }