1 //===----------------------------------------------------------------------===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 // test <stdlib.h> 10 11 #include <stdlib.h> 12 #include <type_traits> 13 #include <cassert> 14 15 #include "test_macros.h" 16 17 #ifdef abs 18 #error abs is defined 19 #endif 20 21 #ifdef labs 22 #error labs is defined 23 #endif 24 25 #ifdef llabs 26 #error llabs is defined 27 #endif 28 29 #ifdef div 30 #error div is defined 31 #endif 32 33 #ifdef ldiv 34 #error ldiv is defined 35 #endif 36 37 #ifdef lldiv 38 #error lldiv is defined 39 #endif 40 41 #ifndef EXIT_FAILURE 42 #error EXIT_FAILURE not defined 43 #endif 44 45 #ifndef EXIT_SUCCESS 46 #error EXIT_SUCCESS not defined 47 #endif 48 49 #ifndef MB_CUR_MAX 50 #error MB_CUR_MAX not defined 51 #endif 52 53 #ifndef NULL 54 #error NULL not defined 55 #endif 56 57 #ifndef RAND_MAX 58 #error RAND_MAX not defined 59 #endif 60 61 template <class T, class = decltype(::abs(std::declval<T>()))> 62 std::true_type has_abs_imp(int); 63 template <class T> 64 std::false_type has_abs_imp(...); 65 66 template <class T> 67 struct has_abs : decltype(has_abs_imp<T>(0)) {}; 68 69 void test_abs() { 70 TEST_DIAGNOSTIC_PUSH 71 TEST_CLANG_DIAGNOSTIC_IGNORED("-Wabsolute-value") 72 static_assert((std::is_same<decltype(abs((float)0)), float>::value), ""); 73 static_assert((std::is_same<decltype(abs((double)0)), double>::value), ""); 74 static_assert( 75 (std::is_same<decltype(abs((long double)0)), long double>::value), ""); 76 static_assert((std::is_same<decltype(abs((int)0)), int>::value), ""); 77 static_assert((std::is_same<decltype(abs((long)0)), long>::value), ""); 78 static_assert((std::is_same<decltype(abs((long long)0)), long long>::value), 79 ""); 80 static_assert((std::is_same<decltype(abs((unsigned char)0)), int>::value), 81 ""); 82 static_assert((std::is_same<decltype(abs((unsigned short)0)), int>::value), 83 ""); 84 static_assert((std::is_same<decltype(abs((signed char)0)), int>::value), 85 ""); 86 static_assert((std::is_same<decltype(abs((short)0)), int>::value), 87 ""); 88 static_assert((std::is_same<decltype(abs((unsigned char)0)), int>::value), 89 ""); 90 static_assert((std::is_same<decltype(abs((char)0)), int>::value), 91 ""); 92 93 static_assert(!has_abs<unsigned>::value, ""); 94 static_assert(!has_abs<unsigned long>::value, ""); 95 static_assert(!has_abs<unsigned long long>::value, ""); 96 static_assert(!has_abs<size_t>::value, ""); 97 98 TEST_DIAGNOSTIC_POP 99 100 assert(abs(-1.) == 1); 101 } 102 103 int main(int, char**) { 104 size_t s = 0; ((void)s); 105 div_t d; ((void)d); 106 ldiv_t ld; ((void)ld); 107 lldiv_t lld; ((void)lld); 108 char** endptr = 0; 109 static_assert((std::is_same<decltype(atof("")), double>::value), ""); 110 static_assert((std::is_same<decltype(atoi("")), int>::value), ""); 111 static_assert((std::is_same<decltype(atol("")), long>::value), ""); 112 static_assert((std::is_same<decltype(atoll("")), long long>::value), ""); 113 static_assert((std::is_same<decltype(getenv("")), char*>::value), ""); 114 static_assert((std::is_same<decltype(strtod("", endptr)), double>::value), ""); 115 static_assert((std::is_same<decltype(strtof("", endptr)), float>::value), ""); 116 static_assert((std::is_same<decltype(strtold("", endptr)), long double>::value), ""); 117 static_assert((std::is_same<decltype(strtol("", endptr,0)), long>::value), ""); 118 static_assert((std::is_same<decltype(strtoll("", endptr,0)), long long>::value), ""); 119 static_assert((std::is_same<decltype(strtoul("", endptr,0)), unsigned long>::value), ""); 120 static_assert((std::is_same<decltype(strtoull("", endptr,0)), unsigned long long>::value), ""); 121 static_assert((std::is_same<decltype(rand()), int>::value), ""); 122 static_assert((std::is_same<decltype(srand(0)), void>::value), ""); 123 124 // aligned_alloc tested in stdlib_h.aligned_alloc.compile.pass.cpp 125 126 void* pv = 0; 127 void (*handler)() = 0; 128 int (*comp)(void const*, void const*) = 0; 129 static_assert((std::is_same<decltype(calloc(0,0)), void*>::value), ""); 130 static_assert((std::is_same<decltype(free(0)), void>::value), ""); 131 static_assert((std::is_same<decltype(malloc(0)), void*>::value), ""); 132 static_assert((std::is_same<decltype(realloc(0,0)), void*>::value), ""); 133 static_assert((std::is_same<decltype(abort()), void>::value), ""); 134 static_assert((std::is_same<decltype(atexit(handler)), int>::value), ""); 135 static_assert((std::is_same<decltype(exit(0)), void>::value), ""); 136 static_assert((std::is_same<decltype(_Exit(0)), void>::value), ""); 137 static_assert((std::is_same<decltype(getenv("")), char*>::value), ""); 138 static_assert((std::is_same<decltype(system("")), int>::value), ""); 139 static_assert((std::is_same<decltype(bsearch(pv,pv,0,0,comp)), void*>::value), ""); 140 static_assert((std::is_same<decltype(qsort(pv,0,0,comp)), void>::value), ""); 141 static_assert((std::is_same<decltype(abs(0)), int>::value), ""); 142 static_assert((std::is_same<decltype(labs((long)0)), long>::value), ""); 143 static_assert((std::is_same<decltype(llabs((long long)0)), long long>::value), ""); 144 static_assert((std::is_same<decltype(div(0,0)), div_t>::value), ""); 145 static_assert((std::is_same<decltype(ldiv(0L,0L)), ldiv_t>::value), ""); 146 static_assert((std::is_same<decltype(lldiv(0LL,0LL)), lldiv_t>::value), ""); 147 #ifndef TEST_HAS_NO_WIDE_CHARACTERS 148 wchar_t* pw = 0; 149 const wchar_t* pwc = 0; 150 char* pc = 0; 151 static_assert((std::is_same<decltype(mblen("",0)), int>::value), ""); 152 static_assert((std::is_same<decltype(mbtowc(pw,"",0)), int>::value), ""); 153 static_assert((std::is_same<decltype(wctomb(pc,L' ')), int>::value), ""); 154 static_assert((std::is_same<decltype(mbstowcs(pw,"",0)), size_t>::value), ""); 155 static_assert((std::is_same<decltype(wcstombs(pc,pwc,0)), size_t>::value), ""); 156 #endif 157 158 test_abs(); 159 160 return 0; 161 } 162