1 //===----------------------------------------------------------------------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is dual licensed under the MIT and the University of Illinois Open 6 // Source Licenses. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 10 // <unordered_map> 11 12 // template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>, 13 // class Alloc = allocator<pair<const Key, T>>> 14 // class unordered_multimap 15 16 // void rehash(size_type n); 17 18 #include <unordered_map> 19 #include <string> 20 #include <cassert> 21 22 #include "min_allocator.h" 23 24 template <class C> 25 void test(const C& c) 26 { 27 assert(c.size() == 6); 28 assert(c.find(1)->second == "one"); 29 assert(next(c.find(1))->second == "four"); 30 assert(c.find(2)->second == "two"); 31 assert(next(c.find(2))->second == "four"); 32 assert(c.find(3)->second == "three"); 33 assert(c.find(4)->second == "four"); 34 } 35 36 int main() 37 { 38 { 39 typedef std::unordered_multimap<int, std::string> C; 40 typedef std::pair<int, std::string> P; 41 P a[] = 42 { 43 P(1, "one"), 44 P(2, "two"), 45 P(3, "three"), 46 P(4, "four"), 47 P(1, "four"), 48 P(2, "four"), 49 }; 50 C c(a, a + sizeof(a)/sizeof(a[0])); 51 test(c); 52 assert(c.bucket_count() >= 7); 53 c.reserve(3); 54 assert(c.bucket_count() == 7); 55 test(c); 56 c.max_load_factor(2); 57 c.reserve(3); 58 assert(c.bucket_count() == 3); 59 test(c); 60 c.reserve(31); 61 assert(c.bucket_count() >= 16); 62 test(c); 63 } 64 #if __cplusplus >= 201103L 65 { 66 typedef std::unordered_multimap<int, std::string, std::hash<int>, std::equal_to<int>, 67 min_allocator<std::pair<const int, std::string>>> C; 68 typedef std::pair<int, std::string> P; 69 P a[] = 70 { 71 P(1, "one"), 72 P(2, "two"), 73 P(3, "three"), 74 P(4, "four"), 75 P(1, "four"), 76 P(2, "four"), 77 }; 78 C c(a, a + sizeof(a)/sizeof(a[0])); 79 test(c); 80 assert(c.bucket_count() >= 7); 81 c.reserve(3); 82 assert(c.bucket_count() == 7); 83 test(c); 84 c.max_load_factor(2); 85 c.reserve(3); 86 assert(c.bucket_count() == 3); 87 test(c); 88 c.reserve(31); 89 assert(c.bucket_count() >= 16); 90 test(c); 91 } 92 #endif 93 } 94
