1bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant//===----------------------------------------------------------------------===// 2bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant// 3f5256e16dfc425c1d466f6308d4026d529ce9e0bHoward Hinnant// The LLVM Compiler Infrastructure 4bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant// 5b64f8b07c104c6cc986570ac8ee0ed16a9f23976Howard Hinnant// This file is dual licensed under the MIT and the University of Illinois Open 6b64f8b07c104c6cc986570ac8ee0ed16a9f23976Howard Hinnant// Source Licenses. See LICENSE.TXT for details. 7bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant// 8bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant//===----------------------------------------------------------------------===// 9bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant 10bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant// <unordered_set> 11bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant 12bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>, 13bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant// class Alloc = allocator<Value>> 14bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant// class unordered_set 15bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant 16bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant// float load_factor() const 17bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant 18bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant#include <unordered_set> 19bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant#include <cassert> 20f836d531b4146465342939fe32ae47d157ee07b2Howard Hinnant#include <cfloat> 21bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant 22061d0cc4db18d17bf01ed14c5db0be098205bd47Marshall Clow#include "min_allocator.h" 237a6b7cedcb3359ad7d77e355b02ab982d9d2b25bHoward Hinnant 24bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnantint main() 25bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant{ 26bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant { 27bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant typedef std::unordered_set<int> C; 28bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant typedef int P; 29bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant P a[] = 30bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant { 31bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant P(10), 32bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant P(20), 33bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant P(30), 34bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant P(40), 35bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant P(50), 36bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant P(60), 37bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant P(70), 38bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant P(80) 39bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant }; 40bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant const C c(std::begin(a), std::end(a)); 41f836d531b4146465342939fe32ae47d157ee07b2Howard Hinnant assert(fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON); 42bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant } 43bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant { 44bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant typedef std::unordered_set<int> C; 45bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant typedef int P; 46bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant const C c; 47bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(c.load_factor() == 0); 48bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant } 497a6b7cedcb3359ad7d77e355b02ab982d9d2b25bHoward Hinnant#if __cplusplus >= 201103L 507a6b7cedcb3359ad7d77e355b02ab982d9d2b25bHoward Hinnant { 517a6b7cedcb3359ad7d77e355b02ab982d9d2b25bHoward Hinnant typedef std::unordered_set<int, std::hash<int>, 527a6b7cedcb3359ad7d77e355b02ab982d9d2b25bHoward Hinnant std::equal_to<int>, min_allocator<int>> C; 537a6b7cedcb3359ad7d77e355b02ab982d9d2b25bHoward Hinnant typedef int P; 547a6b7cedcb3359ad7d77e355b02ab982d9d2b25bHoward Hinnant P a[] = 557a6b7cedcb3359ad7d77e355b02ab982d9d2b25bHoward Hinnant { 567a6b7cedcb3359ad7d77e355b02ab982d9d2b25bHoward Hinnant P(10), 577a6b7cedcb3359ad7d77e355b02ab982d9d2b25bHoward Hinnant P(20), 587a6b7cedcb3359ad7d77e355b02ab982d9d2b25bHoward Hinnant P(30), 597a6b7cedcb3359ad7d77e355b02ab982d9d2b25bHoward Hinnant P(40), 607a6b7cedcb3359ad7d77e355b02ab982d9d2b25bHoward Hinnant P(50), 617a6b7cedcb3359ad7d77e355b02ab982d9d2b25bHoward Hinnant P(60), 627a6b7cedcb3359ad7d77e355b02ab982d9d2b25bHoward Hinnant P(70), 637a6b7cedcb3359ad7d77e355b02ab982d9d2b25bHoward Hinnant P(80) 647a6b7cedcb3359ad7d77e355b02ab982d9d2b25bHoward Hinnant }; 657a6b7cedcb3359ad7d77e355b02ab982d9d2b25bHoward Hinnant const C c(std::begin(a), std::end(a)); 667a6b7cedcb3359ad7d77e355b02ab982d9d2b25bHoward Hinnant assert(fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON); 677a6b7cedcb3359ad7d77e355b02ab982d9d2b25bHoward Hinnant } 687a6b7cedcb3359ad7d77e355b02ab982d9d2b25bHoward Hinnant { 697a6b7cedcb3359ad7d77e355b02ab982d9d2b25bHoward Hinnant typedef std::unordered_set<int, std::hash<int>, 707a6b7cedcb3359ad7d77e355b02ab982d9d2b25bHoward Hinnant std::equal_to<int>, min_allocator<int>> C; 717a6b7cedcb3359ad7d77e355b02ab982d9d2b25bHoward Hinnant typedef int P; 727a6b7cedcb3359ad7d77e355b02ab982d9d2b25bHoward Hinnant const C c; 737a6b7cedcb3359ad7d77e355b02ab982d9d2b25bHoward Hinnant assert(c.load_factor() == 0); 747a6b7cedcb3359ad7d77e355b02ab982d9d2b25bHoward Hinnant } 757a6b7cedcb3359ad7d77e355b02ab982d9d2b25bHoward Hinnant#endif 76bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant} 77