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
24Macros:
25
26    EXIT_FAILURE
27    EXIT_SUCCESS
28    MB_CUR_MAX
29    NULL
30    RAND_MAX
31
32Types:
33
34    size_t
35    div_t
36    ldiv_t
37    lldiv_t                                                               // C99
38
39double    atof (const char* nptr);
40int       atoi (const char* nptr);
41long      atol (const char* nptr);
42long long atoll(const char* nptr);                                        // C99
43double             strtod  (const char* restrict nptr, char** restrict endptr);
44float              strtof  (const char* restrict nptr, char** restrict endptr); // C99
45long double        strtold (const char* restrict nptr, char** restrict endptr); // C99
46long               strtol  (const char* restrict nptr, char** restrict endptr, int base);
47long long          strtoll (const char* restrict nptr, char** restrict endptr, int base); // C99
48unsigned long      strtoul (const char* restrict nptr, char** restrict endptr, int base);
49unsigned long long strtoull(const char* restrict nptr, char** restrict endptr, int base); // C99
50int rand(void);
51void srand(unsigned int seed);
52void* calloc(size_t nmemb, size_t size);
53void free(void* ptr);
54void* malloc(size_t size);
55void* realloc(void* ptr, size_t size);
56void abort(void);
57int atexit(void (*func)(void));
58void exit(int status);
59void _Exit(int status);
60char* getenv(const char* name);
61int system(const char* string);
62void* bsearch(const void* key, const void* base, size_t nmemb, size_t size,
63              int (*compar)(const void *, const void *));
64void qsort(void* base, size_t nmemb, size_t size,
65           int (*compar)(const void *, const void *));
66int         abs(      int j);
67long        abs(     long j);
68long long   abs(long long j);                                             // C++0X
69long       labs(     long j);
70long long llabs(long long j);                                             // C99
71div_t     div(      int numer,       int denom);
72ldiv_t    div(     long numer,      long denom);
73lldiv_t   div(long long numer, long long denom);                          // C++0X
74ldiv_t   ldiv(     long numer,      long denom);
75lldiv_t lldiv(long long numer, long long denom);                          // C99
76int mblen(const char* s, size_t n);
77int mbtowc(wchar_t* restrict pwc, const char* restrict s, size_t n);
78int wctomb(char* s, wchar_t wchar);
79size_t mbstowcs(wchar_t* restrict pwcs, const char* restrict s, size_t n);
80size_t wcstombs(char* restrict s, const wchar_t* restrict pwcs, size_t n);
81int at_quick_exit(void (*func)(void))                                     // C++11
82void quick_exit(int status);                                              // C++11
83void *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
98extern "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)
145inline _LIBCPP_HIDE_FROM_ABI ldiv_t div(long __x, long __y) _NOEXCEPT { return ::ldiv(__x, __y); }
146#      if !(defined(__FreeBSD__) && !defined(__LONG_LONG_SUPPORTED))
147inline _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