// 980930 bkoz work with libstdc++v3 // Copyright (C) 1998-1999 Free Software Foundation, Inc. // // This file is part of the GNU ISO C++ Library. This library is free // software; you can redistribute it and/or modify it under the // terms of the GNU General Public License as published by the // Free Software Foundation; either version 2, or (at your option) // any later version. // This library is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License along // with this library; see the file COPYING. If not, write to the Free // Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, // USA. // 21.3.6.8 basic_string::compare // int compare(const basic_string& str) const; // int compare(size_type pos1, size_type n1, const basic_string& str) const; // int compare(size_type pos1, size_type n1, const basic_string& str, // size_type pos2, size_type n2) const; // int compare(const charT* s) const; // int compare(size_type pos1, size_type n1, // const charT* s, size_type n2 = npos) const; // NB compare should be thought of as a lexographical compare, ie how // things would be sorted in a dictionary. #include #include enum want_value {lt=0, z=1, gt=2}; int test_value(int result, want_value expected); int test_value(int result, want_value expected) { bool pass = false; switch (expected) { case lt: if (result < 0) pass = true; break; case z: if (!result) pass = true; break; case gt: if (result > 0) pass = true; break; default: pass = false; //should not get here } #ifdef DEBUG_ASSERT assert(pass); #endif return 0; } int test01() { using namespace std; string str_0("costa rica"); string str_1("costa marbella"); string str_2; //sanity check test_value(strcmp("costa marbella", "costa rica"), lt); test_value(strcmp("costa rica", "costa rica"), z); test_value(strcmp(str_1.data(), str_0.data()), lt); test_value(strcmp(str_0.data(), str_1.data()), gt); test_value(strncmp(str_1.data(), str_0.data(), 6), z); test_value(strncmp(str_1.data(), str_0.data(), 14), lt); test_value(memcmp(str_1.data(), str_0.data(), 6), z); test_value(memcmp(str_1.data(), str_0.data(), 14), lt); test_value(memcmp("costa marbella", "costa rica", 14), lt); // int compare(const basic_string& str) const; test_value(str_0.compare(str_1), gt); //because r>m test_value(str_1.compare(str_0), lt); //because m