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 #if defined(__need_malloc_and_calloc)
11 
12 #  if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
13 #    pragma GCC system_header
14 #  endif
15 
16 #  include_next <stdlib.h>
17 
18 #elif !defined(_LIBCPP_STDLIB_H)
19 #  define _LIBCPP_STDLIB_H
20 
21 /*
22     stdlib.h synopsis
23 
24 Macros:
25 
26     EXIT_FAILURE
27     EXIT_SUCCESS
28     MB_CUR_MAX
29     NULL
30     RAND_MAX
31 
32 Types:
33 
34     size_t
35     div_t
36     ldiv_t
37     lldiv_t                                                               // C99
38 
39 double    atof (const char* nptr);
40 int       atoi (const char* nptr);
41 long      atol (const char* nptr);
42 long long atoll(const char* nptr);                                        // C99
43 double             strtod  (const char* restrict nptr, char** restrict endptr);
44 float              strtof  (const char* restrict nptr, char** restrict endptr); // C99
45 long double        strtold (const char* restrict nptr, char** restrict endptr); // C99
46 long               strtol  (const char* restrict nptr, char** restrict endptr, int base);
47 long long          strtoll (const char* restrict nptr, char** restrict endptr, int base); // C99
48 unsigned long      strtoul (const char* restrict nptr, char** restrict endptr, int base);
49 unsigned long long strtoull(const char* restrict nptr, char** restrict endptr, int base); // C99
50 int rand(void);
51 void srand(unsigned int seed);
52 void* calloc(size_t nmemb, size_t size);
53 void free(void* ptr);
54 void* malloc(size_t size);
55 void* realloc(void* ptr, size_t size);
56 void abort(void);
57 int atexit(void (*func)(void));
58 void exit(int status);
59 void _Exit(int status);
60 char* getenv(const char* name);
61 int system(const char* string);
62 void* bsearch(const void* key, const void* base, size_t nmemb, size_t size,
63               int (*compar)(const void *, const void *));
64 void qsort(void* base, size_t nmemb, size_t size,
65            int (*compar)(const void *, const void *));
66 int         abs(      int j);
67 long        abs(     long j);
68 long long   abs(long long j);                                             // C++0X
69 long       labs(     long j);
70 long long llabs(long long j);                                             // C99
71 div_t     div(      int numer,       int denom);
72 ldiv_t    div(     long numer,      long denom);
73 lldiv_t   div(long long numer, long long denom);                          // C++0X
74 ldiv_t   ldiv(     long numer,      long denom);
75 lldiv_t lldiv(long long numer, long long denom);                          // C99
76 int mblen(const char* s, size_t n);
77 int mbtowc(wchar_t* restrict pwc, const char* restrict s, size_t n);
78 int wctomb(char* s, wchar_t wchar);
79 size_t mbstowcs(wchar_t* restrict pwcs, const char* restrict s, size_t n);
80 size_t wcstombs(char* restrict s, const wchar_t* restrict pwcs, size_t n);
81 int at_quick_exit(void (*func)(void))                                     // C++11
82 void quick_exit(int status);                                              // C++11
83 void *aligned_alloc(size_t alignment, size_t size);                       // C11
84 
85 */
86 
87 #  include <__config>
88 
89 #  if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
90 #    pragma GCC system_header
91 #  endif
92 
93 #  if __has_include_next(<stdlib.h>)
94 #    include_next <stdlib.h>
95 #  endif
96 
97 #  ifdef __cplusplus
98 extern "C++" {
99 // abs
100 
101 #    ifdef abs
102 #      undef abs
103 #    endif
104 #    ifdef labs
105 #      undef labs
106 #    endif
107 #    ifdef llabs
108 #      undef llabs
109 #    endif
110 
111 // MSVCRT already has the correct prototype in <stdlib.h> if __cplusplus is defined
112 #    if !defined(_LIBCPP_MSVCRT)
113 _LIBCPP_NODISCARD_EXT inline _LIBCPP_HIDE_FROM_ABI long abs(long __x) _NOEXCEPT { return __builtin_labs(__x); }
114 _LIBCPP_NODISCARD_EXT inline _LIBCPP_HIDE_FROM_ABI long long abs(long long __x) _NOEXCEPT {
115   return __builtin_llabs(__x);
116 }
117 #    endif // !defined(_LIBCPP_MSVCRT)
118 
119 _LIBCPP_NODISCARD_EXT inline _LIBCPP_HIDE_FROM_ABI float abs(float __lcpp_x) _NOEXCEPT {
120   return __builtin_fabsf(__lcpp_x); // Use builtins to prevent needing math.h
121 }
122 
123 _LIBCPP_NODISCARD_EXT inline _LIBCPP_HIDE_FROM_ABI double abs(double __lcpp_x) _NOEXCEPT {
124   return __builtin_fabs(__lcpp_x);
125 }
126 
127 _LIBCPP_NODISCARD_EXT inline _LIBCPP_HIDE_FROM_ABI long double abs(long double __lcpp_x) _NOEXCEPT {
128   return __builtin_fabsl(__lcpp_x);
129 }
130 
131 // div
132 
133 #    ifdef div
134 #      undef div
135 #    endif
136 #    ifdef ldiv
137 #      undef ldiv
138 #    endif
139 #    ifdef lldiv
140 #      undef lldiv
141 #    endif
142 
143 // MSVCRT already has the correct prototype in <stdlib.h> if __cplusplus is defined
144 #    if !defined(_LIBCPP_MSVCRT)
145 inline _LIBCPP_HIDE_FROM_ABI ldiv_t div(long __x, long __y) _NOEXCEPT { return ::ldiv(__x, __y); }
146 #      if !(defined(__FreeBSD__) && !defined(__LONG_LONG_SUPPORTED))
147 inline _LIBCPP_HIDE_FROM_ABI lldiv_t div(long long __x, long long __y) _NOEXCEPT { return ::lldiv(__x, __y); }
148 #      endif
149 #    endif // _LIBCPP_MSVCRT
150 } // extern "C++"
151 #  endif   // __cplusplus
152 
153 #endif // _LIBCPP_STDLIB_H
154