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cpl_port.h
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/******************************************************************************
* $Id$
*
* Project: CPL - Common Portability Library
* Author: Frank Warmerdam, [email protected]
* Purpose: Include file providing low level portability services for CPL.
* This should be the first include file for any CPL based code.
*
******************************************************************************
* Copyright (c) 1998, 2005, Frank Warmerdam <[email protected]>
* Copyright (c) 2008-2013, Even Rouault <even dot rouault at spatialys.com>
*
* SPDX-License-Identifier: MIT
****************************************************************************/
#ifndef CPL_BASE_H_INCLUDED
#define CPL_BASE_H_INCLUDED
/**
* \file cpl_port.h
*
* Core portability definitions for CPL.
*
*/
/* -------------------------------------------------------------------- */
/* The following apparently allow you to use strcpy() and other */
/* functions judged "unsafe" by microsoft in VS 8 (2005). */
/* -------------------------------------------------------------------- */
#ifdef _MSC_VER
#ifndef _CRT_SECURE_NO_DEPRECATE
#define _CRT_SECURE_NO_DEPRECATE
#endif
#ifndef _CRT_NONSTDC_NO_DEPRECATE
#define _CRT_NONSTDC_NO_DEPRECATE
#endif
#endif
#include "cpl_config.h"
/* ==================================================================== */
/* A few sanity checks, mainly to detect problems that sometimes */
/* arise with bad configured cross-compilation. */
/* ==================================================================== */
#if !defined(SIZEOF_INT) || SIZEOF_INT != 4
#error "Unexpected value for SIZEOF_INT"
#endif
#if !defined(SIZEOF_UNSIGNED_LONG) || \
(SIZEOF_UNSIGNED_LONG != 4 && SIZEOF_UNSIGNED_LONG != 8)
#error "Unexpected value for SIZEOF_UNSIGNED_LONG"
#endif
#if !defined(SIZEOF_VOIDP)
#error "Unexpected value for SIZEOF_VOIDP"
#endif
/* ==================================================================== */
/* This will disable most WIN32 stuff in a Cygnus build which */
/* defines unix to 1. */
/* ==================================================================== */
#ifdef unix
#undef WIN32
#endif
/*! @cond Doxygen_Suppress */
#if defined(VSI_NEED_LARGEFILE64_SOURCE) && !defined(_LARGEFILE64_SOURCE)
#define _LARGEFILE64_SOURCE 1
#endif
/* ==================================================================== */
/* If iconv() is available use extended recoding module. */
/* Stub implementation is always compiled in, because it works */
/* faster than iconv() for encodings it supports. */
/* ==================================================================== */
#if defined(HAVE_ICONV)
#define CPL_RECODE_ICONV
#endif
#define CPL_RECODE_STUB
/*! @endcond */
/* ==================================================================== */
/* MinGW stuff */
/* ==================================================================== */
/* Needed for std=c11 on Solaris to have strcasecmp() */
#if defined(GDAL_COMPILATION) && defined(__sun__) && \
(__STDC_VERSION__ + 0) >= 201112L && (_XOPEN_SOURCE + 0) < 600
#ifdef _XOPEN_SOURCE
#undef _XOPEN_SOURCE
#endif
#define _XOPEN_SOURCE 600
#endif
/* ==================================================================== */
/* Standard include files. */
/* ==================================================================== */
#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include <stdarg.h>
#include <string.h>
#include <ctype.h>
#include <limits.h>
#include <time.h>
#include <errno.h>
#ifdef HAVE_LOCALE_H
#include <locale.h>
#endif
#ifdef HAVE_DIRECT_H
#include <direct.h>
#endif
#if !defined(_WIN32)
#include <strings.h>
#endif
/* ==================================================================== */
/* Base portability stuff ... this stuff may need to be */
/* modified for new platforms. */
/* ==================================================================== */
/* -------------------------------------------------------------------- */
/* Which versions of C++ are available. */
/* -------------------------------------------------------------------- */
/* MSVC fails to define a decent value of __cplusplus. Try to target VS2015*/
/* as a minimum */
#if defined(__cplusplus) && !defined(CPL_SUPRESS_CPLUSPLUS)
#if !(__cplusplus >= 201103L || (defined(_MSC_VER) && _MSC_VER >= 1900))
#error Must have C++11 or newer.
#endif
#if __cplusplus >= 201402L || (defined(_MSVC_LANG) && _MSVC_LANG >= 201402L)
#define HAVE_CXX14 1
#endif
#if __cplusplus >= 201703L || (defined(_MSVC_LANG) && _MSVC_LANG >= 201703L)
#define HAVE_CXX17 1
#endif
#endif /* __cplusplus */
/*---------------------------------------------------------------------
* types for 16 and 32 bits integers, etc...
*--------------------------------------------------------------------*/
#if UINT_MAX == 65535
typedef long GInt32;
typedef unsigned long GUInt32;
#else
/** Int32 type */
typedef int GInt32;
/** Unsigned int32 type */
typedef unsigned int GUInt32;
#endif
/** Int16 type */
typedef short GInt16;
/** Unsigned int16 type */
typedef unsigned short GUInt16;
/** Unsigned byte type */
typedef unsigned char GByte;
/** Signed int8 type */
typedef signed char GInt8;
/* hack for PDF driver and poppler >= 0.15.0 that defines incompatible "typedef
* bool GBool" */
/* in include/poppler/goo/gtypes.h */
#ifndef CPL_GBOOL_DEFINED
/*! @cond Doxygen_Suppress */
#define CPL_GBOOL_DEFINED
/*! @endcond */
/** Type for boolean values (alias to int) */
typedef int GBool;
#endif
/*! @cond Doxygen_Suppress */
#ifdef __cplusplus
#define CPL_STATIC_CAST(type, expr) static_cast<type>(expr)
#define CPL_REINTERPRET_CAST(type, expr) reinterpret_cast<type>(expr)
#else
#define CPL_STATIC_CAST(type, expr) ((type)(expr))
#define CPL_REINTERPRET_CAST(type, expr) ((type)(expr))
#endif
/*! @endcond */
/* -------------------------------------------------------------------- */
/* 64bit support */
/* -------------------------------------------------------------------- */
/** Large signed integer type (generally 64-bit integer type).
* Use GInt64 when exactly 64 bit is needed */
typedef long long GIntBig;
/** Large unsigned integer type (generally 64-bit unsigned integer type).
* Use GUInt64 when exactly 64 bit is needed */
typedef unsigned long long GUIntBig;
/** Minimum GIntBig value */
#define GINTBIG_MIN (CPL_STATIC_CAST(GIntBig, 0x80000000) << 32)
/** Maximum GIntBig value */
#define GINTBIG_MAX ((CPL_STATIC_CAST(GIntBig, 0x7FFFFFFF) << 32) | 0xFFFFFFFFU)
/** Maximum GUIntBig value */
#define GUINTBIG_MAX \
((CPL_STATIC_CAST(GUIntBig, 0xFFFFFFFFU) << 32) | 0xFFFFFFFFU)
/*! @cond Doxygen_Suppress */
#define CPL_HAS_GINT64 1
/*! @endcond */
/* Note: we might want to use instead int64_t / uint64_t if they are available
*/
/** Signed 64 bit integer type */
typedef GIntBig GInt64;
/** Unsigned 64 bit integer type */
typedef GUIntBig GUInt64;
/** Minimum GInt64 value */
#define GINT64_MIN GINTBIG_MIN
/** Maximum GInt64 value */
#define GINT64_MAX GINTBIG_MAX
/** Minimum GUInt64 value */
#define GUINT64_MAX GUINTBIG_MAX
#if SIZEOF_VOIDP > 8
#include <stddef.h> // ptrdiff_t
/** Integer type large enough to hold the difference between 2 addresses */
typedef ptrdiff_t GPtrDiff_t;
#elif SIZEOF_VOIDP == 8
/** Integer type large enough to hold the difference between 2 addresses */
typedef GIntBig GPtrDiff_t;
#else
/** Integer type large enough to hold the difference between 2 addresses */
typedef int GPtrDiff_t;
#endif
#ifdef GDAL_COMPILATION
#include <stdint.h>
typedef uintptr_t GUIntptr_t;
#define CPL_IS_ALIGNED(ptr, quant) \
((CPL_REINTERPRET_CAST(GUIntptr_t, CPL_STATIC_CAST(const void *, ptr)) % \
(quant)) == 0)
#endif
#if (defined(__MSVCRT__) && !(defined(__MINGW64__) && __GNUC__ >= 10)) || \
(defined(_WIN32) && defined(_MSC_VER))
#define CPL_FRMT_GB_WITHOUT_PREFIX "I64"
#else
/** Printf formatting suffix for GIntBig */
#define CPL_FRMT_GB_WITHOUT_PREFIX "ll"
#endif
/** Printf formatting for GIntBig */
#define CPL_FRMT_GIB "%" CPL_FRMT_GB_WITHOUT_PREFIX "d"
/** Printf formatting for GUIntBig */
#define CPL_FRMT_GUIB "%" CPL_FRMT_GB_WITHOUT_PREFIX "u"
/*! @cond Doxygen_Suppress */
#ifdef COMPAT_WITH_ICC_CONVERSION_CHECK
#define CPL_INT64_FITS_ON_INT32(x) ((x) >= INT_MIN && (x) <= INT_MAX)
#else
#define CPL_INT64_FITS_ON_INT32(x) \
(CPL_STATIC_CAST(GIntBig, CPL_STATIC_CAST(int, x)) == (x))
#endif
/*! @endcond */
/* ==================================================================== */
/* Other standard services. */
/* ==================================================================== */
#ifdef __cplusplus
/** Macro to start a block of C symbols */
#define CPL_C_START \
extern "C" \
{
/** Macro to end a block of C symbols */
#define CPL_C_END }
#else
#define CPL_C_START
#define CPL_C_END
#endif
#ifndef CPL_DLL
#if defined(_MSC_VER) && !defined(CPL_DISABLE_DLL)
#ifdef GDAL_COMPILATION
#define CPL_DLL __declspec(dllexport)
#else
#define CPL_DLL
#endif
#define CPL_INTERNAL
#else
#if defined(USE_GCC_VISIBILITY_FLAG)
#define CPL_DLL __attribute__((visibility("default")))
#if !defined(__MINGW32__)
#define CPL_INTERNAL __attribute__((visibility("hidden")))
#else
#define CPL_INTERNAL
#endif
#else
#define CPL_DLL
#define CPL_INTERNAL
#endif
#endif
// Marker for unstable API
#define CPL_UNSTABLE_API CPL_DLL
#endif
/*! @cond Doxygen_Suppress */
/* Should optional (normally private) interfaces be exported? */
#ifdef CPL_OPTIONAL_APIS
#define CPL_ODLL CPL_DLL
#else
#define CPL_ODLL
#endif
/*! @endcond */
#ifndef CPL_STDCALL
#if defined(_MSC_VER) && !defined(CPL_DISABLE_STDCALL)
#define CPL_STDCALL __stdcall
#else
#define CPL_STDCALL
#endif
#endif
/*! @cond Doxygen_Suppress */
#ifdef _MSC_VER
#define FORCE_CDECL __cdecl
#else
#define FORCE_CDECL
#endif
/*! @endcond */
/*! @cond Doxygen_Suppress */
/* TODO : support for other compilers needed */
#if (defined(__GNUC__) && !defined(__NO_INLINE__)) || defined(_MSC_VER)
#define HAS_CPL_INLINE 1
#define CPL_INLINE __inline
#elif defined(__SUNPRO_CC)
#define HAS_CPL_INLINE 1
#define CPL_INLINE inline
#else
#define CPL_INLINE
#endif
/*! @endcond*/
#ifndef MAX
/** Macro to compute the minimum of 2 values */
#define MIN(a, b) (((a) < (b)) ? (a) : (b))
/** Macro to compute the maximum of 2 values */
#define MAX(a, b) (((a) > (b)) ? (a) : (b))
#endif
#ifndef ABS
/** Macro to compute the absolute value */
#define ABS(x) (((x) < 0) ? (-1 * (x)) : (x))
#endif
#ifndef M_PI
/** PI definition */
#define M_PI 3.14159265358979323846
/* 3.1415926535897932384626433832795 */
#endif
/* -------------------------------------------------------------------- */
/* Macro to test equality of two floating point values. */
/* We use fabs() function instead of ABS() macro to avoid side */
/* effects. */
/* -------------------------------------------------------------------- */
/*! @cond Doxygen_Suppress */
#ifndef CPLIsEqual
#define CPLIsEqual(x, y) (fabs((x) - (y)) < 0.0000000000001)
#endif
/*! @endcond */
/* -------------------------------------------------------------------- */
/* Provide macros for case insensitive string comparisons. */
/* -------------------------------------------------------------------- */
#ifndef EQUAL
#if defined(AFL_FRIENDLY) && defined(__GNUC__)
static inline int CPL_afl_friendly_memcmp(const void *ptr1, const void *ptr2,
size_t len)
__attribute__((always_inline));
static inline int CPL_afl_friendly_memcmp(const void *ptr1, const void *ptr2,
size_t len)
{
const unsigned char *bptr1 = (const unsigned char *)ptr1;
const unsigned char *bptr2 = (const unsigned char *)ptr2;
while (len--)
{
unsigned char b1 = *(bptr1++);
unsigned char b2 = *(bptr2++);
if (b1 != b2)
return b1 - b2;
}
return 0;
}
static inline int CPL_afl_friendly_strcmp(const char *ptr1, const char *ptr2)
__attribute__((always_inline));
static inline int CPL_afl_friendly_strcmp(const char *ptr1, const char *ptr2)
{
const unsigned char *usptr1 = (const unsigned char *)ptr1;
const unsigned char *usptr2 = (const unsigned char *)ptr2;
while (1)
{
unsigned char ch1 = *(usptr1++);
unsigned char ch2 = *(usptr2++);
if (ch1 == 0 || ch1 != ch2)
return ch1 - ch2;
}
}
static inline int CPL_afl_friendly_strncmp(const char *ptr1, const char *ptr2,
size_t len)
__attribute__((always_inline));
static inline int CPL_afl_friendly_strncmp(const char *ptr1, const char *ptr2,
size_t len)
{
const unsigned char *usptr1 = (const unsigned char *)ptr1;
const unsigned char *usptr2 = (const unsigned char *)ptr2;
while (len--)
{
unsigned char ch1 = *(usptr1++);
unsigned char ch2 = *(usptr2++);
if (ch1 == 0 || ch1 != ch2)
return ch1 - ch2;
}
return 0;
}
static inline int CPL_afl_friendly_strcasecmp(const char *ptr1,
const char *ptr2)
__attribute__((always_inline));
static inline int CPL_afl_friendly_strcasecmp(const char *ptr1,
const char *ptr2)
{
const unsigned char *usptr1 = (const unsigned char *)ptr1;
const unsigned char *usptr2 = (const unsigned char *)ptr2;
while (1)
{
unsigned char ch1 = *(usptr1++);
unsigned char ch2 = *(usptr2++);
ch1 = (unsigned char)toupper(ch1);
ch2 = (unsigned char)toupper(ch2);
if (ch1 == 0 || ch1 != ch2)
return ch1 - ch2;
}
}
static inline int CPL_afl_friendly_strncasecmp(const char *ptr1,
const char *ptr2, size_t len)
__attribute__((always_inline));
static inline int CPL_afl_friendly_strncasecmp(const char *ptr1,
const char *ptr2, size_t len)
{
const unsigned char *usptr1 = (const unsigned char *)ptr1;
const unsigned char *usptr2 = (const unsigned char *)ptr2;
while (len--)
{
unsigned char ch1 = *(usptr1++);
unsigned char ch2 = *(usptr2++);
ch1 = (unsigned char)toupper(ch1);
ch2 = (unsigned char)toupper(ch2);
if (ch1 == 0 || ch1 != ch2)
return ch1 - ch2;
}
return 0;
}
static inline char *CPL_afl_friendly_strstr(const char *haystack,
const char *needle)
__attribute__((always_inline));
static inline char *CPL_afl_friendly_strstr(const char *haystack,
const char *needle)
{
const char *ptr_haystack = haystack;
while (1)
{
const char *ptr_haystack2 = ptr_haystack;
const char *ptr_needle = needle;
while (1)
{
char ch1 = *(ptr_haystack2++);
char ch2 = *(ptr_needle++);
if (ch2 == 0)
return (char *)ptr_haystack;
if (ch1 != ch2)
break;
}
if (*ptr_haystack == 0)
return NULL;
ptr_haystack++;
}
}
#undef strcmp
#undef strncmp
#define memcmp CPL_afl_friendly_memcmp
#define strcmp CPL_afl_friendly_strcmp
#define strncmp CPL_afl_friendly_strncmp
#define strcasecmp CPL_afl_friendly_strcasecmp
#define strncasecmp CPL_afl_friendly_strncasecmp
#define strstr CPL_afl_friendly_strstr
#endif /* defined(AFL_FRIENDLY) && defined(__GNUC__) */
#if defined(_WIN32)
#define STRCASECMP(a, b) (_stricmp(a, b))
#define STRNCASECMP(a, b, n) (_strnicmp(a, b, n))
#else
/** Alias for strcasecmp() */
#define STRCASECMP(a, b) (strcasecmp(a, b))
/** Alias for strncasecmp() */
#define STRNCASECMP(a, b, n) (strncasecmp(a, b, n))
#endif
/** Alias for strncasecmp() == 0 */
#define EQUALN(a, b, n) (STRNCASECMP(a, b, n) == 0)
/** Alias for strcasecmp() == 0 */
#define EQUAL(a, b) (STRCASECMP(a, b) == 0)
#endif
/*---------------------------------------------------------------------
* Does a string "a" start with string "b". Search is case-sensitive or,
* with CI, it is a case-insensitive comparison.
*--------------------------------------------------------------------- */
#ifndef STARTS_WITH_CI
/** Returns whether a starts with b */
#define STARTS_WITH(a, b) (strncmp(a, b, strlen(b)) == 0)
/** Returns whether a starts with b (case insensitive comparison) */
#define STARTS_WITH_CI(a, b) EQUALN(a, b, strlen(b))
#endif
/*! @cond Doxygen_Suppress */
#ifndef CPL_THREADLOCAL
#define CPL_THREADLOCAL
#endif
/*! @endcond */
#ifndef GDAL_COMPILATION
/*! @cond Doxygen_Suppress */
/* -------------------------------------------------------------------- */
/* Handle isnan() and isinf(). Note that isinf() and isnan() */
/* are supposed to be macros according to C99, defined in math.h */
/* Some systems (i.e. Tru64) don't have isinf() at all, so if */
/* the macro is not defined we just assume nothing is infinite. */
/* This may mean we have no real CPLIsInf() on systems with isinf()*/
/* function but no corresponding macro, but I can live with */
/* that since it isn't that important a test. */
/* -------------------------------------------------------------------- */
#ifdef _MSC_VER
#include <float.h>
#define CPLIsNan(x) _isnan(x)
#define CPLIsInf(x) (!_isnan(x) && !_finite(x))
#define CPLIsFinite(x) _finite(x)
#elif defined(__GNUC__) && \
(__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4))
/* When including <cmath> in C++11 the isnan() macro is undefined, so that */
/* std::isnan() can work (#6489). This is a GCC specific workaround for now. */
#define CPLIsNan(x) __builtin_isnan(x)
#define CPLIsInf(x) __builtin_isinf(x)
#define CPLIsFinite(x) __builtin_isfinite(x)
#elif defined(__cplusplus) && defined(HAVE_STD_IS_NAN) && HAVE_STD_IS_NAN
extern "C++"
{
#ifndef DOXYGEN_SKIP
#include <cmath>
#endif
static inline int CPLIsNan(float f)
{
return std::isnan(f);
}
static inline int CPLIsNan(double f)
{
return std::isnan(f);
}
static inline int CPLIsInf(float f)
{
return std::isinf(f);
}
static inline int CPLIsInf(double f)
{
return std::isinf(f);
}
static inline int CPLIsFinite(float f)
{
return std::isfinite(f);
}
static inline int CPLIsFinite(double f)
{
return std::isfinite(f);
}
}
#else
/** Return whether a floating-pointer number is NaN */
#if defined(__cplusplus) && defined(__GNUC__) && defined(__linux) && \
!defined(__ANDROID__) && !defined(CPL_SUPRESS_CPLUSPLUS)
/* so to not get warning about conversion from double to float with */
/* gcc -Wfloat-conversion when using isnan()/isinf() macros */
extern "C++"
{
static inline int CPLIsNan(float f)
{
return __isnanf(f);
}
static inline int CPLIsNan(double f)
{
return __isnan(f);
}
static inline int CPLIsInf(float f)
{
return __isinff(f);
}
static inline int CPLIsInf(double f)
{
return __isinf(f);
}
static inline int CPLIsFinite(float f)
{
return !__isnanf(f) && !__isinff(f);
}
static inline int CPLIsFinite(double f)
{
return !__isnan(f) && !__isinf(f);
}
}
#else
#define CPLIsNan(x) isnan(x)
#if defined(isinf) || defined(__FreeBSD__)
/** Return whether a floating-pointer number is +/- infinity */
#define CPLIsInf(x) isinf(x)
/** Return whether a floating-pointer number is finite */
#define CPLIsFinite(x) (!isnan(x) && !isinf(x))
#elif defined(__sun__)
#include <ieeefp.h>
#define CPLIsInf(x) (!finite(x) && !isnan(x))
#define CPLIsFinite(x) finite(x)
#else
#define CPLIsInf(x) (0)
#define CPLIsFinite(x) (!isnan(x))
#endif
#endif
#endif
/*! @endcond */
#endif // GDAL_COMPILATION
/*! @cond Doxygen_Suppress */
/*---------------------------------------------------------------------
* CPL_LSB and CPL_MSB
* Only one of these 2 macros should be defined and specifies the byte
* ordering for the current platform.
* This should be defined in the Makefile, but if it is not then
* the default is CPL_LSB (Intel ordering, LSB first).
*--------------------------------------------------------------------*/
#if defined(WORDS_BIGENDIAN) && !defined(CPL_MSB) && !defined(CPL_LSB)
#define CPL_MSB
#endif
#if !(defined(CPL_LSB) || defined(CPL_MSB))
#define CPL_LSB
#endif
#if defined(CPL_LSB)
#define CPL_IS_LSB 1
#else
#define CPL_IS_LSB 0
#endif
/*! @endcond */
#if defined(__cplusplus) && !defined(CPL_SUPRESS_CPLUSPLUS)
/*! @cond Doxygen_Suppress */
extern "C++"
{
template <bool b> struct CPLStaticAssert
{
};
template <> struct CPLStaticAssert<true>
{
static void my_function()
{
}
};
} /* extern "C++" */
#define CPL_STATIC_ASSERT(x) CPLStaticAssert<x>::my_function()
#define CPL_STATIC_ASSERT_IF_AVAILABLE(x) CPL_STATIC_ASSERT(x)
#else /* __cplusplus */
#define CPL_STATIC_ASSERT_IF_AVAILABLE(x)
#endif /* __cplusplus */
/*! @endcond */
/*---------------------------------------------------------------------
* Little endian <==> big endian byte swap macros.
*--------------------------------------------------------------------*/
/** Byte-swap a 16bit unsigned integer */
#define CPL_SWAP16(x) \
CPL_STATIC_CAST(GUInt16, (CPL_STATIC_CAST(GUInt16, x) << 8) | \
(CPL_STATIC_CAST(GUInt16, x) >> 8))
#if defined(HAVE_GCC_BSWAP)
/** Byte-swap a 32bit unsigned integer */
#define CPL_SWAP32(x) \
CPL_STATIC_CAST(GUInt32, __builtin_bswap32(CPL_STATIC_CAST(GUInt32, x)))
/** Byte-swap a 64bit unsigned integer */
#define CPL_SWAP64(x) \
CPL_STATIC_CAST(GUInt64, __builtin_bswap64(CPL_STATIC_CAST(GUInt64, x)))
#elif defined(_MSC_VER)
#define CPL_SWAP32(x) \
CPL_STATIC_CAST(GUInt32, _byteswap_ulong(CPL_STATIC_CAST(GUInt32, x)))
#define CPL_SWAP64(x) \
CPL_STATIC_CAST(GUInt64, _byteswap_uint64(CPL_STATIC_CAST(GUInt64, x)))
#else
/** Byte-swap a 32bit unsigned integer */
#define CPL_SWAP32(x) \
CPL_STATIC_CAST(GUInt32, \
((CPL_STATIC_CAST(GUInt32, x) & 0x000000ffU) << 24) | \
((CPL_STATIC_CAST(GUInt32, x) & 0x0000ff00U) << 8) | \
((CPL_STATIC_CAST(GUInt32, x) & 0x00ff0000U) >> 8) | \
((CPL_STATIC_CAST(GUInt32, x) & 0xff000000U) >> 24))
/** Byte-swap a 64bit unsigned integer */
#define CPL_SWAP64(x) \
((CPL_STATIC_CAST(GUInt64, CPL_SWAP32(CPL_STATIC_CAST(GUInt32, x))) \
<< 32) | \
(CPL_STATIC_CAST(GUInt64, \
CPL_SWAP32(CPL_STATIC_CAST( \
GUInt32, CPL_STATIC_CAST(GUInt64, x) >> 32)))))
#endif
/** Byte-swap a 16 bit pointer */
#define CPL_SWAP16PTR(x) \
do \
{ \
GUInt16 _n16; \
void *_lx = x; \
memcpy(&_n16, _lx, 2); \
CPL_STATIC_ASSERT_IF_AVAILABLE(sizeof(*(x)) == 1 || \
sizeof(*(x)) == 2); \
_n16 = CPL_SWAP16(_n16); \
memcpy(_lx, &_n16, 2); \
} while (0)
/** Byte-swap a 32 bit pointer */
#define CPL_SWAP32PTR(x) \
do \
{ \
GUInt32 _n32; \
void *_lx = x; \
memcpy(&_n32, _lx, 4); \
CPL_STATIC_ASSERT_IF_AVAILABLE(sizeof(*(x)) == 1 || \
sizeof(*(x)) == 4); \
_n32 = CPL_SWAP32(_n32); \
memcpy(_lx, &_n32, 4); \
} while (0)
/** Byte-swap a 64 bit pointer */
#define CPL_SWAP64PTR(x) \
do \
{ \
GUInt64 _n64; \
void *_lx = x; \
memcpy(&_n64, _lx, 8); \
CPL_STATIC_ASSERT_IF_AVAILABLE(sizeof(*(x)) == 1 || \
sizeof(*(x)) == 8); \
_n64 = CPL_SWAP64(_n64); \
memcpy(_lx, &_n64, 8); \
} while (0)
/** Byte-swap a 64 bit pointer */
#define CPL_SWAPDOUBLE(p) CPL_SWAP64PTR(p)
#ifdef CPL_MSB
#define CPL_MSBWORD16(x) (x)
#define CPL_LSBWORD16(x) CPL_SWAP16(x)
#define CPL_MSBWORD32(x) (x)
#define CPL_LSBWORD32(x) CPL_SWAP32(x)
#define CPL_MSBPTR16(x) \
CPL_STATIC_ASSERT_IF_AVAILABLE(sizeof(*(x)) == 1 || sizeof(*(x)) == 2)
#define CPL_LSBPTR16(x) CPL_SWAP16PTR(x)
#define CPL_MSBPTR32(x) \
CPL_STATIC_ASSERT_IF_AVAILABLE(sizeof(*(x)) == 1 || sizeof(*(x)) == 4)
#define CPL_LSBPTR32(x) CPL_SWAP32PTR(x)
#define CPL_MSBPTR64(x) \
CPL_STATIC_ASSERT_IF_AVAILABLE(sizeof(*(x)) == 1 || sizeof(*(x)) == 8)
#define CPL_LSBPTR64(x) CPL_SWAP64PTR(x)
#else
/** Return a 16bit word from a originally LSB ordered word */
#define CPL_LSBWORD16(x) (x)
/** Return a 16bit word from a originally MSB ordered word */
#define CPL_MSBWORD16(x) CPL_SWAP16(x)
/** Return a 32bit word from a originally LSB ordered word */
#define CPL_LSBWORD32(x) (x)
/** Return a 32bit word from a originally MSB ordered word */
#define CPL_MSBWORD32(x) CPL_SWAP32(x)
/** Byte-swap if necessary a 16bit word at the location pointed from a
* originally LSB ordered pointer */
#define CPL_LSBPTR16(x) \
CPL_STATIC_ASSERT_IF_AVAILABLE(sizeof(*(x)) == 1 || sizeof(*(x)) == 2)
/** Byte-swap if necessary a 16bit word at the location pointed from a
* originally MSB ordered pointer */
#define CPL_MSBPTR16(x) CPL_SWAP16PTR(x)
/** Byte-swap if necessary a 32bit word at the location pointed from a
* originally LSB ordered pointer */
#define CPL_LSBPTR32(x) \
CPL_STATIC_ASSERT_IF_AVAILABLE(sizeof(*(x)) == 1 || sizeof(*(x)) == 4)
/** Byte-swap if necessary a 32bit word at the location pointed from a
* originally MSB ordered pointer */
#define CPL_MSBPTR32(x) CPL_SWAP32PTR(x)
/** Byte-swap if necessary a 64bit word at the location pointed from a
* originally LSB ordered pointer */
#define CPL_LSBPTR64(x) \
CPL_STATIC_ASSERT_IF_AVAILABLE(sizeof(*(x)) == 1 || sizeof(*(x)) == 8)
/** Byte-swap if necessary a 64bit word at the location pointed from a
* originally MSB ordered pointer */
#define CPL_MSBPTR64(x) CPL_SWAP64PTR(x)
#endif
/** Return a Int16 from the 2 bytes ordered in LSB order at address x.
* @deprecated Use rather CPL_LSBSINT16PTR or CPL_LSBUINT16PTR for explicit
* signedness. */
#define CPL_LSBINT16PTR(x) \
((*CPL_REINTERPRET_CAST(const GByte *, x)) | \
(*((CPL_REINTERPRET_CAST(const GByte *, x)) + 1) << 8))
/** Return a Int32 from the 4 bytes ordered in LSB order at address x.
* @deprecated Use rather CPL_LSBSINT32PTR or CPL_LSBUINT32PTR for explicit
* signedness. */
#define CPL_LSBINT32PTR(x) \
((*CPL_REINTERPRET_CAST(const GByte *, x)) | \
(*((CPL_REINTERPRET_CAST(const GByte *, x)) + 1) << 8) | \
(*((CPL_REINTERPRET_CAST(const GByte *, x)) + 2) << 16) | \
(*((CPL_REINTERPRET_CAST(const GByte *, x)) + 3) << 24))
/** Return a signed Int16 from the 2 bytes ordered in LSB order at address x */
#define CPL_LSBSINT16PTR(x) CPL_STATIC_CAST(GInt16, CPL_LSBINT16PTR(x))
/** Return a unsigned Int16 from the 2 bytes ordered in LSB order at address x
*/
#define CPL_LSBUINT16PTR(x) CPL_STATIC_CAST(GUInt16, CPL_LSBINT16PTR(x))
/** Return a signed Int32 from the 4 bytes ordered in LSB order at address x */
#define CPL_LSBSINT32PTR(x) CPL_STATIC_CAST(GInt32, CPL_LSBINT32PTR(x))
/** Return a unsigned Int32 from the 4 bytes ordered in LSB order at address x
*/
#define CPL_LSBUINT32PTR(x) CPL_STATIC_CAST(GUInt32, CPL_LSBINT32PTR(x))
/*! @cond Doxygen_Suppress */
/* Utility macro to explicitly mark intentionally unreferenced parameters. */
#ifndef UNREFERENCED_PARAM
#ifdef UNREFERENCED_PARAMETER /* May be defined by Windows API */
#define UNREFERENCED_PARAM(param) UNREFERENCED_PARAMETER(param)
#else
#define UNREFERENCED_PARAM(param) ((void)param)
#endif /* UNREFERENCED_PARAMETER */
#endif /* UNREFERENCED_PARAM */
/*! @endcond */
/***********************************************************************
* Define CPL_CVSID() macro. It can be disabled during a build by
* defining DISABLE_CVSID in the compiler options.
*
* The cvsid_aw() function is just there to prevent reports of cpl_cvsid()
* being unused.
*/
/*! @cond Doxygen_Suppress */
#ifndef DISABLE_CVSID
#if defined(__GNUC__) && __GNUC__ >= 4
#define CPL_CVSID(string) \
static const char cpl_cvsid[] __attribute__((used)) = string;
#else
#define CPL_CVSID(string) \
static const char cpl_cvsid[] = string; \
static const char *cvsid_aw() \
{ \
return (cvsid_aw() ? NULL : cpl_cvsid); \
}
#endif
#else
#define CPL_CVSID(string)
#endif
/*! @endcond */
/* We exclude mingw64 4.6 which seems to be broken regarding this */
#if defined(__GNUC__) && __GNUC__ >= 4 && !defined(DOXYGEN_SKIP) && \
!(defined(__MINGW64__) && __GNUC__ == 4 && __GNUC_MINOR__ == 6)
/** Null terminated variadic */
#define CPL_NULL_TERMINATED __attribute__((__sentinel__))
#else
/** Null terminated variadic */
#define CPL_NULL_TERMINATED
#endif
#if defined(__GNUC__) && __GNUC__ >= 3 && !defined(DOXYGEN_SKIP)
/** Tag a function to have printf() formatting */
#define CPL_PRINT_FUNC_FORMAT(format_idx, arg_idx) \
__attribute__((__format__(__printf__, format_idx, arg_idx)))
/** Tag a function to have scanf() formatting */
#define CPL_SCAN_FUNC_FORMAT(format_idx, arg_idx) \
__attribute__((__format__(__scanf__, format_idx, arg_idx)))
#else
/** Tag a function to have printf() formatting */
#define CPL_PRINT_FUNC_FORMAT(format_idx, arg_idx)
/** Tag a function to have scanf() formatting */
#define CPL_SCAN_FUNC_FORMAT(format_idx, arg_idx)
#endif
#if defined(_MSC_VER) && \
(defined(GDAL_COMPILATION) || defined(CPL_ENABLE_MSVC_ANNOTATIONS))
#include <sal.h>
/** Macro into which to wrap the format argument of a printf-like function.
* Only used if ANALYZE=1 is specified to nmake */
#define CPL_FORMAT_STRING(arg) _Printf_format_string_ arg
/** Macro into which to wrap the format argument of a sscanf-like function.
* Only used if ANALYZE=1 is specified to nmake */
#define CPL_SCANF_FORMAT_STRING(arg) _Scanf_format_string_ arg
#else
/** Macro into which to wrap the format argument of a printf-like function */
#define CPL_FORMAT_STRING(arg) arg
/** Macro into which to wrap the format argument of a sscanf-like function. */
#define CPL_SCANF_FORMAT_STRING(arg) arg
#endif /* defined(_MSC_VER) && defined(GDAL_COMPILATION) */
#if defined(__GNUC__) && __GNUC__ >= 4 && !defined(DOXYGEN_SKIP)
/** Qualifier to warn when the return value of a function is not used */
#define CPL_WARN_UNUSED_RESULT __attribute__((warn_unused_result))
#else
/** Qualifier to warn when the return value of a function is not used */
#define CPL_WARN_UNUSED_RESULT
#endif
#if defined(__GNUC__) && __GNUC__ >= 4
/** Qualifier for an argument that is unused */
#define CPL_UNUSED __attribute((__unused__))
#else
/* TODO: add cases for other compilers */
/** Qualifier for an argument that is unused */
#define CPL_UNUSED
#endif
#if defined(__GNUC__) && __GNUC__ >= 3 && !defined(DOXYGEN_SKIP)
/** Qualifier for a function that does not return at all (terminates the
* process) */
#define CPL_NO_RETURN __attribute__((noreturn))
#else
/** Qualifier for a function that does not return at all (terminates the
* process) */
#define CPL_NO_RETURN
#endif
/*! @cond Doxygen_Suppress */
/* Clang __has_attribute */
#ifndef __has_attribute
#define __has_attribute(x) 0 // Compatibility with non-clang compilers.
#endif
/*! @endcond */
#if ((defined(__GNUC__) && \
(__GNUC__ >= 5 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 9))) || \
__has_attribute(returns_nonnull)) && \
!defined(DOXYGEN_SKIP) && !defined(__INTEL_COMPILER)
/** Qualifier for a function that does not return NULL */
#define CPL_RETURNS_NONNULL __attribute__((returns_nonnull))
#else