shrink_to_fit.pass.cpp revision bc8d3f97eb5c958007f2713238472e0c1c8fe02
1bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant//===----------------------------------------------------------------------===// 2bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant// 3bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant// ��������������������The LLVM Compiler Infrastructure 4bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant// 5bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant// This file is distributed under the University of Illinois Open Source 6bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant// License. See LICENSE.TXT for details. 7bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant// 8bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant//===----------------------------------------------------------------------===// 9bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant 10bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant// <deque> 11bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant 12bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant// void shrink_to_fit(); 13bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant 14bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant#include <deque> 15bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant#include <cassert> 16bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant 17bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnantstd::deque<int> 18bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnantmake(int size, int start = 0 ) 19bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant{ 20bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant const int b = 4096 / sizeof(int); 21bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant int init = 0; 22bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant if (start > 0) 23bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant { 24bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant init = (start+1) / b + ((start+1) % b != 0); 25bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant init *= b; 26bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant --init; 27bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant } 28bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant std::deque<int> c(init, 0); 29bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant for (int i = 0; i < init-start; ++i) 30bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant c.pop_back(); 31bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant for (int i = 0; i < size; ++i) 32bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant c.push_back(i); 33bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant for (int i = 0; i < start; ++i) 34bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant c.pop_front(); 35bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant return c; 36bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant}; 37bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant 38bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnantvoid 39bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnanttest(std::deque<int>& c1) 40bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant{ 41bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant std::deque<int> s = c1; 42bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant c1.shrink_to_fit(); 43bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(c1 == s); 44bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant} 45bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant 46bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnantvoid 47bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard HinnanttestN(int start, int N) 48bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant{ 49bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant typedef std::deque<int> C; 50bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant typedef C::const_iterator CI; 51bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant C c1 = make(N, start); 52bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant test(c1); 53bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant} 54bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant 55bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnantint main() 56bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant{ 57bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant int rng[] = {0, 1, 2, 3, 1023, 1024, 1025, 2047, 2048, 2049}; 58bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant const int N = sizeof(rng)/sizeof(rng[0]); 59bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant for (int i = 0; i < N; ++i) 60bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant for (int j = 0; j < N; ++j) 61bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant testN(rng[i], rng[j]); 62bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant} 63