X-Git-Url: https://www.ginac.de/ginac.git//ginac.git?a=blobdiff_plain;f=check%2Ftime_lw_A.cpp;h=ea1787f6af724bd9c6a04bc6fbfea431c4c61039;hb=33a92d56aeaadfe8dad246ae17b091e14b220e82;hp=c21bcede0f31252e0b14fef747f8233bd5ccffc0;hpb=a54293fb33b252ca926cd1aba18faacb0f16688a;p=ginac.git diff --git a/check/time_lw_A.cpp b/check/time_lw_A.cpp index c21bcede..ea1787f6 100644 --- a/check/time_lw_A.cpp +++ b/check/time_lw_A.cpp @@ -4,7 +4,7 @@ * Lewis and Michael Wester. */ /* - * GiNaC Copyright (C) 1999-2000 Johannes Gutenberg University Mainz, Germany + * GiNaC Copyright (C) 1999-2016 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 @@ -18,49 +18,56 @@ * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ -#include "times.h" +#include "ginac.h" +#include "timer.h" +using namespace GiNaC; -static unsigned test(void) +#include +#include +using namespace std; + +static unsigned test() { - for (int i=1; i<=99; ++i) - factorial(1000+i)/factorial(900+i); - ex rat(factorial(1100)/factorial(1000)); - - if (abs(evalf(rat)-numeric(".13280014101512E303"))>numeric("1.0E289")) { - clog << "1100!/1000! erroneously returned " << rat << endl; - return 1; - } - return 0; + for (int i=1; i<=99; ++i) + factorial(1000+i)/factorial(900+i); + ex rat(factorial(1100)/factorial(1000)); + + if (abs(evalf(rat)-numeric(".13280014101512E303"))>numeric("1.0E289")) { + clog << "1100!/1000! erroneously returned " << rat << endl; + return 1; + } + return 0; } -unsigned time_lw_A(void) +unsigned time_lw_A() +{ + unsigned result = 0; + unsigned count = 0; + timer rolex; + double time = .0; + + cout << "timing Lewis-Wester test A (divide factorials)" << flush; + + rolex.start(); + // correct for very small times: + do { + result = test(); + ++count; + } while ((time=rolex.read())<0.1 && !result); + cout << '.' << flush; + cout << time/count << 's' << endl; + + return result; +} + +extern void randomify_symbol_serials(); + +int main(int argc, char** argv) { - unsigned result = 0; - unsigned count = 1; - timer rolex; - double time = .0; - - cout << "timing Lewis-Wester test A (divide factorials)" << flush; - clog << "-------Lewis-Wester test A (divide factorials)" << 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; + randomify_symbol_serials(); + cout << setprecision(2) << showpoint; + return time_lw_A(); }