stdlib.h

C语言库函数的原型,有用的拿去

/***
*stdlib.h - declarations/definitions for commonly used library functions
*
*       Copyright (c) Microsoft Corporation. All rights reserved.
*
*Purpose:
*       This include file contains the function declarations for commonly
*       used library functions which either don't fit somewhere else, or,
*       cannot be declared in the normal place for other reasons.
*       [ANSI]
*
*       [Public]
*
****/

#pragma once

#ifndef _INC_STDLIB
#define _INC_STDLIB

#include <crtdefs.h>
#include <limits.h>

/*
 * Currently, all MS C compilers for Win32 platforms default to 8 byte
 * alignment.
 */
#pragma pack(push,_CRT_PACKING)

#ifdef __cplusplus
extern "C" {
#endif  /* __cplusplus */

/* Define NULL pointer value */
#ifndef NULL
#ifdef __cplusplus
#define NULL    0
#else  /* __cplusplus */
#define NULL    ((void *)0)
#endif  /* __cplusplus */
#endif  /* NULL */

/* Definition of the argument values for the exit() function */

#define EXIT_SUCCESS    0
#define EXIT_FAILURE    1


#ifndef _ONEXIT_T_DEFINED

#if !defined (_M_CEE_PURE)
typedef int (__cdecl * _onexit_t)(void);
#else  /* !defined (_M_CEE_PURE) */
typedef int (__clrcall * _onexit_t)(void);
typedef _onexit_t _onexit_m_t;
#endif  /* !defined (_M_CEE_PURE) */

#if defined (_M_CEE_MIXED)
typedef int (__clrcall * _onexit_m_t)(void);
#endif  /* defined (_M_CEE_MIXED) */

#if !__STDC__
/* Non-ANSI name for compatibility */
#define onexit_t _onexit_t
#endif  /* !__STDC__ */

#define _ONEXIT_T_DEFINED
#endif  /* _ONEXIT_T_DEFINED */


/* Data structure definitions for div and ldiv runtimes. */

#ifndef _DIV_T_DEFINED

typedef struct _div_t {
        int quot;
        int rem;
} div_t;

typedef struct _ldiv_t {
        long quot;
        long rem;
} ldiv_t;

typedef struct _lldiv_t {
        long long quot;
        long long rem;
} lldiv_t;

#define _DIV_T_DEFINED
#endif  /* _DIV_T_DEFINED */

/*
 * structs used to fool the compiler into not generating floating point
 * instructions when copying and pushing [long] double values
 */

#ifndef _CRT_DOUBLE_DEC

#ifndef _LDSUPPORT

#pragma pack(4)
typedef struct {
    unsigned char ld[10];
} _LDOUBLE;
#pragma pack()

#define _PTR_LD(x) ((unsigned char  *)(&(x)->ld))

#else  /* _LDSUPPORT */

/* push and pop long, which is #defined as __int64 by a spec2k test */
#pragma push_macro("long")
#undef long
typedef long double _LDOUBLE;
#pragma pop_macro("long")

#define _PTR_LD(x) ((unsigned char  *)(x))

#endif  /* _LDSUPPORT */

typedef struct {
        double x;
} _CRT_DOUBLE;

typedef struct {
    float f;
} _CRT_FLOAT;

/* push and pop long, which is #defined as __int64 by a spec2k test */
#pragma push_macro("long")
#undef long

typedef struct {
        /*
         * Assume there is a long double type
         */
        long double x;
} _LONGDOUBLE;

#pragma pop_macro("long")

#pragma pack(4)
typedef struct {
    unsigned char ld12[12];
} _LDBL12;
#pragma pack()

#define _CRT_DOUBLE_DEC
#endif  /* _CRT_DOUBLE_DEC */

/* Maximum value that can be returned by the rand function. */

#define RAND_MAX 0x7fff

/*
 * Maximum number of bytes in multi-byte character in the current locale
 * (also defined in ctype.h).
 */
#ifndef MB_CUR_MAX
#ifndef _INTERNAL_IFSTRIP_
#if defined (_DLL) && defined (_M_IX86)
/* Retained for compatibility with VC++ 5.0 and earlier versions */
_CRTIMP int * __cdecl __p___mb_cur_max(void);
#endif  /* defined (_DLL) && defined (_M_IX86) */
#define __MB_CUR_MAX(ptloci) (ptloci)->mb_cur_max
#endif  /* _INTERNAL_IFSTRIP_ */
#define MB_CUR_MAX ___mb_cur_max_func()
#if !defined (_M_CEE_PURE)
_CRTIMP extern int __mb_cur_max;
#else  /* !defined (_M_CEE_PURE) */
_CRTIMP int* __cdecl __p___mb_cur_max(void);
#define __mb_cur_max (*__p___mb_cur_max())
#endif  /* !defined (_M_CEE_PURE) */
_CRTIMP int __cdecl ___mb_cur_max_func(void);
_CRTIMP int __cdecl ___mb_cur_max_l_func(_locale_t);
#endif  /* MB_CUR_MAX */

/* Minimum and maximum macros */

#define __max(a,b)  (((a) > (b)) ? (a) : (b))
#define __min(a,b)  (((a) < (b)) ? (a) : (b))

/*
 * Sizes for buffers used by the _makepath() and _splitpath() functions.
 * note that the sizes include space for 0-terminator
 */
#define _MAX_PATH   260 /* max. length of full pathname */
#define _MAX_DRIVE  3   /* max. length of drive component */
#define _MAX_DIR    256 /* max. length of path component */
#define _MAX_FNAME  256 /* max. length of file name component */
#define _MAX_EXT    256 /* max. length of extension component */

/*
 * Argument values for _set_error_mode().
 */
#define _OUT_TO_DEFAULT 0
#define _OUT_TO_STDERR  1
#define _OUT_TO_MSGBOX  2
#define _REPORT_ERRMODE 3

/*
 * Argument values for _set_abort_behavior().
 */
#define _WRITE_ABORT_MSG    0x1 /* debug only, has no effect in release */
#define _CALL_REPORTFAULT   0x2

/*
 * Sizes for buffers used by the getenv/putenv family of functions.
 */
#define _MAX_ENV 32767

#if !defined (_M_CEE_PURE)
/* a purecall handler procedure. Never returns normally */
typedef void (__cdecl *_purecall_handler)(void);

/* establishes a purecall handler for the process */
_CRTIMP _purecall_handler __cdecl _set_purecall_handler(_In_opt_ _purecall_handler _Handler);
_CRTIMP _purecall_handler __cdecl _get_purecall_handler(void);
#endif  /* !defined (_M_CEE_PURE) */

#if defined (__cplusplus)
extern "C++"
{
#if defined (_M_CEE_PURE)
    typedef void (__clrcall *_purecall_handler)(void);