asn_system.h

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/*
 * Copyright (c) 2003-2017 Lev Walkin <vlm@lionet.info>. All rights reserved.
 * Redistribution and modifications are permitted subject to BSD license.
 */
/*
 * Miscellaneous system-dependent types.
 */
#ifndef ASN_SYSTEM_H
#define ASN_SYSTEM_H
 
#ifdef  HAVE_CONFIG_H
#include "config.h"
#endif
 
#ifndef _DEFAULT_SOURCE
#define _DEFAULT_SOURCE 1
#endif
 
#ifndef _BSD_SOURCE
#define _BSD_SOURCE /* for snprintf() on some linux systems  */
#endif
 
#include <stdio.h>      /* For snprintf(3) */
#include <stdlib.h>     /* For *alloc(3) */
#include <string.h>     /* For memcpy(3) */
#include <sys/types.h>  /* For size_t */
#include <limits.h>     /* For LONG_MAX */
#include <stdarg.h>     /* For va_start */
#include <stddef.h>     /* for offsetof and ptrdiff_t */
#include <inttypes.h>   /* for PRIdMAX */
 
#ifdef  _WIN32
 
#include <malloc.h>
#ifndef __MINGW32__
#define  snprintf       _snprintf
#define  vsnprintf      _vsnprintf
#endif
 
/* To avoid linking with ws2_32.lib, here's the definition of ntohl() */
#define sys_ntohl(l)    ((((l) << 24)  & 0xff000000)    \
                        | (((l) << 8) & 0xff0000)       \
                        | (((l) >> 8)  & 0xff00)        \
                        | ((l >> 24) & 0xff))
 
#ifdef _MSC_VER                 /* MSVS.Net */
#ifndef __cplusplus
#define inline __inline
#endif
#ifndef ASSUMESTDTYPES  /* Standard types have been defined elsewhere */
#define ssize_t         SSIZE_T
#if _MSC_VER < 1600
typedef char            int8_t;
typedef short           int16_t;
typedef int             int32_t;
typedef unsigned char   uint8_t;
typedef unsigned short  uint16_t;
typedef unsigned int    uint32_t;
#else /* _MSC_VER >= 1600 */
#include <stdint.h>
#endif /* _MSC_VER < 1600 */
#endif  /* ASSUMESTDTYPES */
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#include <float.h>
#define isnan _isnan
#define finite _finite
#define copysign _copysign
#define ilogb   _logb
#else   /* !_MSC_VER */
#include <stdint.h>
#endif  /* _MSC_VER */
 
#else   /* !_WIN32 */
 
#if defined(__vxworks)
#include <types/vxTypes.h>
#else   /* !defined(__vxworks) */
 
#include <inttypes.h>   /* C99 specifies this file */
#ifdef HAVE_ARPA_INET_H
#include <arpa/inet.h> /* for ntohl() */
#define sys_ntohl(foo)  ntohl(foo)
#else /* !_HAVE_ARPA_INET_H */
#ifdef HAVE_NETINET_IN_H
#include <netinet/in.h> /* for ntohl() */
#define sys_ntohl(foo)  ntohl(foo)
#else /* !_HAVE_NETINET_IN_H */
/* Here's the definition of ntohl() */
#define sys_ntohl(l)   ((((l) << 24)  & 0xff000000)    \
            | (((l) << 8) & 0xff0000)  \
            | (((l) >> 8)  & 0xff00)   \
            | ((l >> 24) & 0xff))
#endif /* HAVE_NETINET_IN_H */
#endif /* HAVE_ARPA_INET_H */
#endif  /* defined(__vxworks) */
 
 
#endif  /* _WIN32 */
 
#if     __GNUC__ >= 3 || defined(__clang__)
#define CC_ATTRIBUTE(attr)    __attribute__((attr))
#else
#define CC_ATTRIBUTE(attr)
#endif
#if defined(__GNUC__) && ((__GNUC__ == 4 && __GNUC_MINOR__>= 4) || __GNUC__ > 4)
#define CC_PRINTFLIKE(fmt, var) CC_ATTRIBUTE(format(gnu_printf, fmt, var))
#elif defined(__GNUC__)
#if defined(ANDROID)
#define CC_PRINTFLIKE(fmt, var) CC_ATTRIBUTE(__format__(__printf__, fmt, var))
#else
#define CC_PRINTFLIKE(fmt, var) CC_ATTRIBUTE(format(printf, fmt, var))
#endif
#else
#define CC_PRINTFLIKE(fmt, var)
#endif
#define CC_NOTUSED                  CC_ATTRIBUTE(unused)
#ifndef CC_ATTR_NO_SANITIZE
#if     __GNUC__ < 8
#define CC_ATTR_NO_SANITIZE(what)
#else
#define CC_ATTR_NO_SANITIZE(what)   CC_ATTRIBUTE(no_sanitize(what))
#endif
#endif
 
/* Figure out if thread safety is requested */
#if !defined(ASN_THREAD_SAFE) && (defined(THREAD_SAFE) || defined(_REENTRANT))
#define ASN_THREAD_SAFE
#endif  /* Thread safety */
 
#ifndef offsetof        /* If not defined by <stddef.h> */
#define offsetof(s, m)  ((ptrdiff_t)&(((s *)0)->m) - (ptrdiff_t)((s *)0))
#endif  /* offsetof */
 
#ifndef MIN             /* Suitable for comparing primitive types (integers) */
#if defined(__GNUC__)
#define MIN(a,b)        ({ __typeof a _a = a; __typeof b _b = b;        \
        ((_a)<(_b)?(_a):(_b)); })
#else   /* !__GNUC__ */
#define MIN(a,b)        ((a)<(b)?(a):(b))       /* Unsafe variant */
#endif /* __GNUC__ */
#endif  /* MIN */
 
#if __STDC_VERSION__ >= 199901L
#ifndef SIZE_MAX
#define SIZE_MAX   ((~((size_t)0)) >> 1)
#endif
 
#ifndef RSIZE_MAX   /* C11, Annex K */
#define RSIZE_MAX   (SIZE_MAX >> 1)
#endif
#ifndef RSSIZE_MAX   /* Halve signed size even further than unsigned */
#define RSSIZE_MAX   ((ssize_t)(RSIZE_MAX >> 1))
#endif
#else   /* Old compiler */
#undef  SIZE_MAX
#undef  RSIZE_MAX
#undef  RSSIZE_MAX
#define SIZE_MAX   ((~((size_t)0)) >> 1)
#define RSIZE_MAX   (SIZE_MAX >> 1)
#define RSSIZE_MAX   ((ssize_t)(RSIZE_MAX >> 1))
#endif
 
#if __STDC_VERSION__ >= 199901L
#define ASN_PRI_SIZE "zu"
#define ASN_PRI_SSIZE "zd"
#define ASN_PRIuMAX PRIuMAX
#define ASN_PRIdMAX PRIdMAX
#define ASN_PRIu64 PRIu64
#define ASN_PRId64 PRId64
#else
#define ASN_PRI_SIZE "lu"
#define ASN_PRI_SSIZE "ld"
#define ASN_PRIu64 "llu"
#define ASN_PRId64 "lld"
#if LLONG_MAX > LONG_MAX
#define ASN_PRIuMAX "llu"
#define ASN_PRIdMAX "lld"
#else
#define ASN_PRIuMAX "lu"
#define ASN_PRIdMAX "ld"
#endif
#endif
 
#endif  /* ASN_SYSTEM_H */