1 // -*- C++ -*- 2 //===----------------------------------------------------------------------===// 3 // 4 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 5 // See https://llvm.org/LICENSE.txt for license information. 6 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 7 // 8 //===----------------------------------------------------------------------===// 9 10 /* 11 stdlib.h synopsis 12 13 Macros: 14 15 EXIT_FAILURE 16 EXIT_SUCCESS 17 MB_CUR_MAX 18 NULL 19 RAND_MAX 20 21 Types: 22 23 size_t 24 div_t 25 ldiv_t 26 lldiv_t // C99 27 28 double atof (const char* nptr); 29 int atoi (const char* nptr); 30 long atol (const char* nptr); 31 long long atoll(const char* nptr); // C99 32 double strtod (const char* restrict nptr, char** restrict endptr); 33 float strtof (const char* restrict nptr, char** restrict endptr); // C99 34 long double strtold (const char* restrict nptr, char** restrict endptr); // C99 35 long strtol (const char* restrict nptr, char** restrict endptr, int base); 36 long long strtoll (const char* restrict nptr, char** restrict endptr, int base); // C99 37 unsigned long strtoul (const char* restrict nptr, char** restrict endptr, int base); 38 unsigned long long strtoull(const char* restrict nptr, char** restrict endptr, int base); // C99 39 int rand(void); 40 void srand(unsigned int seed); 41 void* calloc(size_t nmemb, size_t size); 42 void free(void* ptr); 43 void* malloc(size_t size); 44 void* realloc(void* ptr, size_t size); 45 void abort(void); 46 int atexit(void (*func)(void)); 47 void exit(int status); 48 void _Exit(int status); 49 char* getenv(const char* name); 50 int system(const char* string); 51 void* bsearch(const void* key, const void* base, size_t nmemb, size_t size, 52 int (*compar)(const void *, const void *)); 53 void qsort(void* base, size_t nmemb, size_t size, 54 int (*compar)(const void *, const void *)); 55 int abs( int j); 56 long abs( long j); 57 long long abs(long long j); // C++0X 58 long labs( long j); 59 long long llabs(long long j); // C99 60 div_t div( int numer, int denom); 61 ldiv_t div( long numer, long denom); 62 lldiv_t div(long long numer, long long denom); // C++0X 63 ldiv_t ldiv( long numer, long denom); 64 lldiv_t lldiv(long long numer, long long denom); // C99 65 int mblen(const char* s, size_t n); 66 int mbtowc(wchar_t* restrict pwc, const char* restrict s, size_t n); 67 int wctomb(char* s, wchar_t wchar); 68 size_t mbstowcs(wchar_t* restrict pwcs, const char* restrict s, size_t n); 69 size_t wcstombs(char* restrict s, const wchar_t* restrict pwcs, size_t n); 70 int at_quick_exit(void (*func)(void)) // C++11 71 void quick_exit(int status); // C++11 72 void *aligned_alloc(size_t alignment, size_t size); // C11 73 74 */ 75 76 #if defined(__cplusplus) && __cplusplus < 201103L && defined(_LIBCPP_USE_FROZEN_CXX03_HEADERS) 77 # include <__cxx03/stdlib.h> 78 #else 79 # include <__config> 80 81 # if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 82 # pragma GCC system_header 83 # endif 84 85 // The inclusion of the system's <stdlib.h> is intentionally done once outside of any include 86 // guards because some code expects to be able to include the underlying system header multiple 87 // times to get different definitions based on the macros that are set before inclusion. 88 # if __has_include_next(<stdlib.h>) 89 # include_next <stdlib.h> 90 # endif 91 92 # if !defined(_LIBCPP_STDLIB_H) 93 # define _LIBCPP_STDLIB_H 94 95 # ifdef __cplusplus 96 extern "C++" { 97 // abs 98 99 # ifdef abs 100 # undef abs 101 # endif 102 # ifdef labs 103 # undef labs 104 # endif 105 # ifdef llabs 106 # undef llabs 107 # endif 108 109 // MSVCRT already has the correct prototype in <stdlib.h> if __cplusplus is defined 110 # if !defined(_LIBCPP_MSVCRT) 111 [[__nodiscard__]] inline _LIBCPP_HIDE_FROM_ABI long abs(long __x) _NOEXCEPT { return __builtin_labs(__x); } 112 [[__nodiscard__]] inline _LIBCPP_HIDE_FROM_ABI long long abs(long long __x) _NOEXCEPT { return __builtin_llabs(__x); } 113 # endif // !defined(_LIBCPP_MSVCRT) 114 115 [[__nodiscard__]] inline _LIBCPP_HIDE_FROM_ABI float abs(float __lcpp_x) _NOEXCEPT { 116 return __builtin_fabsf(__lcpp_x); // Use builtins to prevent needing math.h 117 } 118 119 [[__nodiscard__]] inline _LIBCPP_HIDE_FROM_ABI double abs(double __lcpp_x) _NOEXCEPT { 120 return __builtin_fabs(__lcpp_x); 121 } 122 123 [[__nodiscard__]] inline _LIBCPP_HIDE_FROM_ABI long double abs(long double __lcpp_x) _NOEXCEPT { 124 return __builtin_fabsl(__lcpp_x); 125 } 126 127 // div 128 129 # ifdef div 130 # undef div 131 # endif 132 # ifdef ldiv 133 # undef ldiv 134 # endif 135 # ifdef lldiv 136 # undef lldiv 137 # endif 138 139 // MSVCRT already has the correct prototype in <stdlib.h> if __cplusplus is defined 140 # if !defined(_LIBCPP_MSVCRT) 141 inline _LIBCPP_HIDE_FROM_ABI ldiv_t div(long __x, long __y) _NOEXCEPT { return ::ldiv(__x, __y); } 142 # if !(defined(__FreeBSD__) && !defined(__LONG_LONG_SUPPORTED)) 143 inline _LIBCPP_HIDE_FROM_ABI lldiv_t div(long long __x, long long __y) _NOEXCEPT { return ::lldiv(__x, __y); } 144 # endif 145 # endif // _LIBCPP_MSVCRT 146 } // extern "C++" 147 # endif // __cplusplus 148 # endif // _LIBCPP_STDLIB_H 149 150 #endif // defined(__cplusplus) && __cplusplus < 201103L && defined(_LIBCPP_USE_FROZEN_CXX03_HEADERS) 151