clang-format all pdfium code.

samples/fx_lpng/lpng_v163/pngconf.h

 
 /* pngconf.h - machine configurable file for libpng
  *
  * libpng version 1.6.3 - July 18, 2013
  *
  * Copyright (c) 1998-2013 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
  * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
  *
  * This code is released under the libpng license.
  * For conditions of distribution and use, see the disclaimer
  * and license in png.h
  *
  */
 
 /* Any machine specific code is near the front of this file, so if you
  * are configuring libpng for a machine, you may want to read the section
  * starting here down to where it starts to typedef png_color, png_text,
  * and png_info.
  */
 
 #ifndef PNGCONF_H
 #define PNGCONF_H
 
 /* To do: Do all of this in scripts/pnglibconf.dfa */
 #ifdef PNG_SAFE_LIMITS_SUPPORTED
-#  ifdef PNG_USER_WIDTH_MAX
-#    undef PNG_USER_WIDTH_MAX
-#    define PNG_USER_WIDTH_MAX 1000000L
-#  endif
-#  ifdef PNG_USER_HEIGHT_MAX
-#    undef PNG_USER_HEIGHT_MAX
-#    define PNG_USER_HEIGHT_MAX 1000000L
-#  endif
-#  ifdef PNG_USER_CHUNK_MALLOC_MAX
-#    undef PNG_USER_CHUNK_MALLOC_MAX
-#    define PNG_USER_CHUNK_MALLOC_MAX 4000000L
-#  endif
-#  ifdef PNG_USER_CHUNK_CACHE_MAX
-#    undef PNG_USER_CHUNK_CACHE_MAX
-#    define PNG_USER_CHUNK_CACHE_MAX 128
-#  endif
+#ifdef PNG_USER_WIDTH_MAX
+#undef PNG_USER_WIDTH_MAX
+#define PNG_USER_WIDTH_MAX 1000000L
+#endif
+#ifdef PNG_USER_HEIGHT_MAX
+#undef PNG_USER_HEIGHT_MAX
+#define PNG_USER_HEIGHT_MAX 1000000L
+#endif
+#ifdef PNG_USER_CHUNK_MALLOC_MAX
+#undef PNG_USER_CHUNK_MALLOC_MAX
+#define PNG_USER_CHUNK_MALLOC_MAX 4000000L
+#endif
+#ifdef PNG_USER_CHUNK_CACHE_MAX
+#undef PNG_USER_CHUNK_CACHE_MAX
+#define PNG_USER_CHUNK_CACHE_MAX 128
+#endif
 #endif
 
 #ifndef PNG_BUILDING_SYMBOL_TABLE /* else includes may cause problems */
 
 /* From libpng 1.6.0 libpng requires an ANSI X3.159-1989 ("ISOC90") compliant C
  * compiler for correct compilation.  The following header files are required by
  * the standard.  If your compiler doesn't provide these header files, or they
  * do not match the standard, you will need to provide/improve them.
  */
 #include <limits.h>
 #include <stddef.h>
 
 /* Library header files.  These header files are all defined by ISOC90; libpng
  * expects conformant implementations, however, an ISOC90 conformant system need
  * not provide these header files if the functionality cannot be implemented.
  * In this case it will be necessary to disable the relevant parts of libpng in
  * the build of pnglibconf.h.
  *
  * Prior to 1.6.0 string.h was included here; the API changes in 1.6.0 to not
  * include this unnecessary header file.
  */
 
 #ifdef PNG_STDIO_SUPPORTED
-   /* Required for the definition of FILE: */
-#  include <stdio.h>
+/* Required for the definition of FILE: */
+#include <stdio.h>
 #endif
 
 #ifdef PNG_SETJMP_SUPPORTED
-   /* Required for the definition of jmp_buf and the declaration of longjmp: */
-#  include <setjmp.h>
+/* Required for the definition of jmp_buf and the declaration of longjmp: */
+#include <setjmp.h>
 #endif
 
 #ifdef PNG_CONVERT_tIME_SUPPORTED
-   /* Required for struct tm: */
-#  include <time.h>
+/* Required for struct tm: */
+#include <time.h>
 #endif
 
 #endif /* PNG_BUILDING_SYMBOL_TABLE */
 
 /* Prior to 1.6.0 it was possible to turn off 'const' in declarations using
  * PNG_NO_CONST; this is no longer supported except for data declarations which
  * apparently still cause problems in 2011 on some compilers.
  */
 #define PNG_CONST const /* backward compatibility only */
 
 /* This controls optimization of the reading of 16 and 32 bit values
  * from PNG files.  It can be set on a per-app-file basis - it
  * just changes whether a macro is used when the function is called.
  * The library builder sets the default; if read functions are not
  * built into the library the macro implementation is forced on.
  */
 #ifndef PNG_READ_INT_FUNCTIONS_SUPPORTED
-#  define PNG_USE_READ_MACROS
+#define PNG_USE_READ_MACROS
 #endif
 #if !defined(PNG_NO_USE_READ_MACROS) && !defined(PNG_USE_READ_MACROS)
-#  if PNG_DEFAULT_READ_MACROS
-#    define PNG_USE_READ_MACROS
-#  endif
+#if PNG_DEFAULT_READ_MACROS
+#define PNG_USE_READ_MACROS
+#endif
 #endif
 
 /* COMPILER SPECIFIC OPTIONS.
  *
  * These options are provided so that a variety of difficult compilers
  * can be used.  Some are fixed at build time (e.g. PNG_API_RULE
  * below) but still have compiler specific implementations, others
  * may be changed on a per-file basis when compiling against libpng.
  */
 
 /* The PNGARG macro was used in versions of libpng prior to 1.6.0 to protect
  * against legacy (pre ISOC90) compilers that did not understand function
  * prototypes.  It is not required for modern C compilers.
  */
 #ifndef PNGARG
-#  define PNGARG(arglist) arglist
+#define PNGARG(arglist) arglist
 #endif
 
 /* Function calling conventions.
  * =============================
  * Normally it is not necessary to specify to the compiler how to call
  * a function - it just does it - however on x86 systems derived from
  * Microsoft and Borland C compilers ('IBM PC', 'DOS', 'Windows' systems
  * and some others) there are multiple ways to call a function and the
  * default can be changed on the compiler command line.  For this reason
  * libpng specifies the calling convention of every exported function and
@@ skipping 68 matching lines @@
  */
 
 /* System specific discovery.
  * ==========================
  * This code is used at build time to find PNG_IMPEXP, the API settings
  * and PNG_EXPORT_TYPE(), it may also set a macro to indicate the DLL
  * import processing is possible.  On Windows systems it also sets
  * compiler-specific macros to the values required to change the calling
  * conventions of the various functions.
  */
-#if defined(_Windows) || defined(_WINDOWS) || defined(WIN32) ||\
+#if defined(_Windows) || defined(_WINDOWS) || defined(WIN32) || \
     defined(_WIN32) || defined(__WIN32__) || defined(__CYGWIN__)
-  /* Windows system (DOS doesn't support DLLs).  Includes builds under Cygwin or
-   * MinGW on any architecture currently supported by Windows.  Also includes
-   * Watcom builds but these need special treatment because they are not
-   * compatible with GCC or Visual C because of different calling conventions.
-   */
-#  if PNG_API_RULE == 2
-    /* If this line results in an error, either because __watcall is not
-     * understood or because of a redefine just below you cannot use *this*
-     * build of the library with the compiler you are using.  *This* build was
-     * build using Watcom and applications must also be built using Watcom!
-     */
-#    define PNGCAPI __watcall
-#  endif
+/* Windows system (DOS doesn't support DLLs).  Includes builds under Cygwin or
+ * MinGW on any architecture currently supported by Windows.  Also includes
+ * Watcom builds but these need special treatment because they are not
+ * compatible with GCC or Visual C because of different calling conventions.
+ */
+#if PNG_API_RULE == 2
+/* If this line results in an error, either because __watcall is not
+ * understood or because of a redefine just below you cannot use *this*
+ * build of the library with the compiler you are using.  *This* build was
+ * build using Watcom and applications must also be built using Watcom!
+ */
+#define PNGCAPI __watcall
+#endif
 
-#  if defined(__GNUC__) || (defined(_MSC_VER) && (_MSC_VER >= 800))
-#    define PNGCAPI __cdecl
-#    if PNG_API_RULE == 1
-       /* If this line results in an error __stdcall is not understood and
-        * PNG_API_RULE should not have been set to '1'.
-        */
-#      define PNGAPI __stdcall
-#    endif
-#  else
-    /* An older compiler, or one not detected (erroneously) above,
-     * if necessary override on the command line to get the correct
-     * variants for the compiler.
-     */
-#    ifndef PNGCAPI
-#      define PNGCAPI _cdecl
-#    endif
-#    if PNG_API_RULE == 1 && !defined(PNGAPI)
-#      define PNGAPI _stdcall
-#    endif
-#  endif /* compiler/api */
+#if defined(__GNUC__) || (defined(_MSC_VER) && (_MSC_VER >= 800))
+#define PNGCAPI __cdecl
+#if PNG_API_RULE == 1
+/* If this line results in an error __stdcall is not understood and
+ * PNG_API_RULE should not have been set to '1'.
+ */
+#define PNGAPI __stdcall
+#endif
+#else
+/* An older compiler, or one not detected (erroneously) above,
+ * if necessary override on the command line to get the correct
+ * variants for the compiler.
+ */
+#ifndef PNGCAPI
+#define PNGCAPI _cdecl
+#endif
+#if PNG_API_RULE == 1 && !defined(PNGAPI)
+#define PNGAPI _stdcall
+#endif
+#endif /* compiler/api */
 
-  /* NOTE: PNGCBAPI always defaults to PNGCAPI. */
+/* NOTE: PNGCBAPI always defaults to PNGCAPI. */
 
-#  if defined(PNGAPI) && !defined(PNG_USER_PRIVATEBUILD)
-#     error "PNG_USER_PRIVATEBUILD must be defined if PNGAPI is changed"
-#  endif
+#if defined(PNGAPI) && !defined(PNG_USER_PRIVATEBUILD)
+#error "PNG_USER_PRIVATEBUILD must be defined if PNGAPI is changed"
+#endif
 
-#  if (defined(_MSC_VER) && _MSC_VER < 800) ||\
-      (defined(__BORLANDC__) && __BORLANDC__ < 0x500)
-    /* older Borland and MSC
-     * compilers used '__export' and required this to be after
-     * the type.
-     */
-#    ifndef PNG_EXPORT_TYPE
-#      define PNG_EXPORT_TYPE(type) type PNG_IMPEXP
-#    endif
-#    define PNG_DLL_EXPORT __export
-#  else /* newer compiler */
-#    define PNG_DLL_EXPORT __declspec(dllexport)
-#    ifndef PNG_DLL_IMPORT
-#      define PNG_DLL_IMPORT __declspec(dllimport)
-#    endif
-#  endif /* compiler */
+#if (defined(_MSC_VER) && _MSC_VER < 800) || \
+    (defined(__BORLANDC__) && __BORLANDC__ < 0x500)
+/* older Borland and MSC
+ * compilers used '__export' and required this to be after
+ * the type.
+ */
+#ifndef PNG_EXPORT_TYPE
+#define PNG_EXPORT_TYPE(type) type PNG_IMPEXP
+#endif
+#define PNG_DLL_EXPORT __export
+#else /* newer compiler */
+#define PNG_DLL_EXPORT __declspec(dllexport)
+#ifndef PNG_DLL_IMPORT
+#define PNG_DLL_IMPORT __declspec(dllimport)
+#endif
+#endif /* compiler */
 
 #else /* !Windows */
-#  if (defined(__IBMC__) || defined(__IBMCPP__)) && defined(__OS2__)
-#    define PNGAPI _System
-#  else /* !Windows/x86 && !OS/2 */
-    /* Use the defaults, or define PNG*API on the command line (but
-     * this will have to be done for every compile!)
-     */
-#  endif /* other system, !OS/2 */
+#if (defined(__IBMC__) || defined(__IBMCPP__)) && defined(__OS2__)
+#define PNGAPI _System
+#else  /* !Windows/x86 && !OS/2 */
+/* Use the defaults, or define PNG*API on the command line (but
+ * this will have to be done for every compile!)
+ */
+#endif /* other system, !OS/2 */
 #endif /* !Windows/x86 */
 
 /* Now do all the defaulting . */
 #ifndef PNGCAPI
-#  define PNGCAPI
+#define PNGCAPI
 #endif
 #ifndef PNGCBAPI
-#  define PNGCBAPI PNGCAPI
+#define PNGCBAPI PNGCAPI
 #endif
 #ifndef PNGAPI
-#  define PNGAPI PNGCAPI
+#define PNGAPI PNGCAPI
 #endif
 
 /* PNG_IMPEXP may be set on the compilation system command line or (if not set)
  * then in an internal header file when building the library, otherwise (when
  * using the library) it is set here.
  */
 #ifndef PNG_IMPEXP
-#  if defined(PNG_USE_DLL) && defined(PNG_DLL_IMPORT)
-     /* This forces use of a DLL, disallowing static linking */
-#    define PNG_IMPEXP PNG_DLL_IMPORT
-#  endif
+#if defined(PNG_USE_DLL) && defined(PNG_DLL_IMPORT)
+/* This forces use of a DLL, disallowing static linking */
+#define PNG_IMPEXP PNG_DLL_IMPORT
+#endif
 
-#  ifndef PNG_IMPEXP
-#    define PNG_IMPEXP
-#  endif
+#ifndef PNG_IMPEXP
+#define PNG_IMPEXP
+#endif
 #endif
 
 /* In 1.5.2 the definition of PNG_FUNCTION has been changed to always treat
  * 'attributes' as a storage class - the attributes go at the start of the
  * function definition, and attributes are always appended regardless of the
  * compiler.  This considerably simplifies these macros but may cause problems
  * if any compilers both need function attributes and fail to handle them as
  * a storage class (this is unlikely.)
  */
 #ifndef PNG_FUNCTION
-#  define PNG_FUNCTION(type, name, args, attributes) attributes type name args
+#define PNG_FUNCTION(type, name, args, attributes) attributes type name args
 #endif
 
 #ifndef PNG_EXPORT_TYPE
-#  define PNG_EXPORT_TYPE(type) PNG_IMPEXP type
+#define PNG_EXPORT_TYPE(type) PNG_IMPEXP type
 #endif
 
-   /* The ordinal value is only relevant when preprocessing png.h for symbol
-    * table entries, so we discard it here.  See the .dfn files in the
-    * scripts directory.
-    */
+/* The ordinal value is only relevant when preprocessing png.h for symbol
+ * table entries, so we discard it here.  See the .dfn files in the
+ * scripts directory.
+ */
 #ifndef PNG_EXPORTA
 
-#  define PNG_EXPORTA(ordinal, type, name, args, attributes)\
-      PNG_FUNCTION(PNG_EXPORT_TYPE(type),(PNGAPI name),PNGARG(args), \
-        extern attributes)
+#define PNG_EXPORTA(ordinal, type, name, args, attributes)         \
+  PNG_FUNCTION(PNG_EXPORT_TYPE(type), (PNGAPI name), PNGARG(args), \
+               extern attributes)
 #endif
 
 /* ANSI-C (C90) does not permit a macro to be invoked with an empty argument,
  * so make something non-empty to satisfy the requirement:
  */
 #define PNG_EMPTY /*empty list*/
 
-#define PNG_EXPORT(ordinal, type, name, args)\
-   PNG_EXPORTA(ordinal, type, name, args, PNG_EMPTY)
+#define PNG_EXPORT(ordinal, type, name, args) \
+  PNG_EXPORTA(ordinal, type, name, args, PNG_EMPTY)
 
 /* Use PNG_REMOVED to comment out a removed interface. */
 #ifndef PNG_REMOVED
-#  define PNG_REMOVED(ordinal, type, name, args, attributes)
+#define PNG_REMOVED(ordinal, type, name, args, attributes)
 #endif
 
 #ifndef PNG_CALLBACK
-#  define PNG_CALLBACK(type, name, args) type (PNGCBAPI name) PNGARG(args)
+#define PNG_CALLBACK(type, name, args) type(PNGCBAPI name) PNGARG(args)
 #endif
 
 /* Support for compiler specific function attributes.  These are used
  * so that where compiler support is available incorrect use of API
  * functions in png.h will generate compiler warnings.
  *
  * Added at libpng-1.2.41.
  */
 
 #ifndef PNG_NO_PEDANTIC_WARNINGS
-#  ifndef PNG_PEDANTIC_WARNINGS_SUPPORTED
-#    define PNG_PEDANTIC_WARNINGS_SUPPORTED
-#  endif
+#ifndef PNG_PEDANTIC_WARNINGS_SUPPORTED
+#define PNG_PEDANTIC_WARNINGS_SUPPORTED
+#endif
 #endif
 
 #ifdef PNG_PEDANTIC_WARNINGS_SUPPORTED
-  /* Support for compiler specific function attributes.  These are used
-   * so that where compiler support is available, incorrect use of API
-   * functions in png.h will generate compiler warnings.  Added at libpng
-   * version 1.2.41.  Disabling these removes the warnings but may also produce
-   * less efficient code.
-   */
-#  if defined(__GNUC__)
-#    ifndef PNG_USE_RESULT
-#      define PNG_USE_RESULT __attribute__((__warn_unused_result__))
-#    endif
-#    ifndef PNG_NORETURN
-#      define PNG_NORETURN   __attribute__((__noreturn__))
-#    endif
-#    if __GNUC__ >= 3
-#      ifndef PNG_ALLOCATED
-#        define PNG_ALLOCATED  __attribute__((__malloc__))
-#      endif
-#      ifndef PNG_DEPRECATED
-#        define PNG_DEPRECATED __attribute__((__deprecated__))
-#      endif
-#      ifndef PNG_PRIVATE
-#        if 0 /* Doesn't work so we use deprecated instead*/
-#          define PNG_PRIVATE \
-            __attribute__((warning("This function is not exported by libpng.")))
-#        else
-#          define PNG_PRIVATE \
-            __attribute__((__deprecated__))
-#        endif
-#      endif
-#      if ((__GNUC__ != 3) || !defined(__GNUC_MINOR__) || (__GNUC_MINOR__ >= 1))
-#        ifndef PNG_RESTRICT
-#          define PNG_RESTRICT __restrict
-#        endif
-#      endif /*  __GNUC__ == 3.0 */
-#    endif /*  __GNUC__ >= 3 */
+/* Support for compiler specific function attributes.  These are used
+ * so that where compiler support is available, incorrect use of API
+ * functions in png.h will generate compiler warnings.  Added at libpng
+ * version 1.2.41.  Disabling these removes the warnings but may also produce
+ * less efficient code.
+ */
+#if defined(__GNUC__)
+#ifndef PNG_USE_RESULT
+#define PNG_USE_RESULT __attribute__((__warn_unused_result__))
+#endif
+#ifndef PNG_NORETURN
+#define PNG_NORETURN __attribute__((__noreturn__))
+#endif
+#if __GNUC__ >= 3
+#ifndef PNG_ALLOCATED
+#define PNG_ALLOCATED __attribute__((__malloc__))
+#endif
+#ifndef PNG_DEPRECATED
+#define PNG_DEPRECATED __attribute__((__deprecated__))
+#endif
+#ifndef PNG_PRIVATE
+#if 0 /* Doesn't work so we use deprecated instead*/
+#define PNG_PRIVATE \
+  __attribute__((warning("This function is not exported by libpng.")))
+#else
+#define PNG_PRIVATE __attribute__((__deprecated__))
+#endif
+#endif
+#if ((__GNUC__ != 3) || !defined(__GNUC_MINOR__) || (__GNUC_MINOR__ >= 1))
+#ifndef PNG_RESTRICT
+#define PNG_RESTRICT __restrict
+#endif
+#endif /*  __GNUC__ == 3.0 */
+#endif /*  __GNUC__ >= 3 */
 
-#  elif defined(_MSC_VER)  && (_MSC_VER >= 1300)
-#    ifndef PNG_USE_RESULT
-#      define PNG_USE_RESULT /* not supported */
-#    endif
-#    ifndef PNG_NORETURN
-#      define PNG_NORETURN   __declspec(noreturn)
-#    endif
-#    ifndef PNG_ALLOCATED
-#      if (_MSC_VER >= 1400)
-#        define PNG_ALLOCATED __declspec(restrict)
-#      endif
-#    endif
-#    ifndef PNG_DEPRECATED
-#      define PNG_DEPRECATED __declspec(deprecated)
-#    endif
-#    ifndef PNG_PRIVATE
-#      define PNG_PRIVATE __declspec(deprecated)
-#    endif
-#    ifndef PNG_RESTRICT
-#      if (_MSC_VER >= 1400)
-#        define PNG_RESTRICT __restrict
-#      endif
-#    endif
+#elif defined(_MSC_VER) && (_MSC_VER >= 1300)
+#ifndef PNG_USE_RESULT
+#define PNG_USE_RESULT /* not supported */
+#endif
+#ifndef PNG_NORETURN
+#define PNG_NORETURN __declspec(noreturn)
+#endif
+#ifndef PNG_ALLOCATED
+#if (_MSC_VER >= 1400)
+#define PNG_ALLOCATED __declspec(restrict)
+#endif
+#endif
+#ifndef PNG_DEPRECATED
+#define PNG_DEPRECATED __declspec(deprecated)
+#endif
+#ifndef PNG_PRIVATE
+#define PNG_PRIVATE __declspec(deprecated)
+#endif
+#ifndef PNG_RESTRICT
+#if (_MSC_VER >= 1400)
+#define PNG_RESTRICT __restrict
+#endif
+#endif
 
-#  elif defined(__WATCOMC__)
-#    ifndef PNG_RESTRICT
-#      define PNG_RESTRICT __restrict
-#    endif
-#  endif /* _MSC_VER */
+#elif defined(__WATCOMC__)
+#ifndef PNG_RESTRICT
+#define PNG_RESTRICT __restrict
+#endif
+#endif /* _MSC_VER */
 #endif /* PNG_PEDANTIC_WARNINGS */
 
 #ifndef PNG_DEPRECATED
-#  define PNG_DEPRECATED  /* Use of this function is deprecated */
+#define PNG_DEPRECATED /* Use of this function is deprecated */
 #endif
 #ifndef PNG_USE_RESULT
-#  define PNG_USE_RESULT  /* The result of this function must be checked */
+#define PNG_USE_RESULT /* The result of this function must be checked */
 #endif
 #ifndef PNG_NORETURN
-#  define PNG_NORETURN    /* This function does not return */
+#define PNG_NORETURN /* This function does not return */
 #endif
 #ifndef PNG_ALLOCATED
-#  define PNG_ALLOCATED   /* The result of the function is new memory */
+#define PNG_ALLOCATED /* The result of the function is new memory */
 #endif
 #ifndef PNG_PRIVATE
-#  define PNG_PRIVATE     /* This is a private libpng function */
+#define PNG_PRIVATE /* This is a private libpng function */
 #endif
 #ifndef PNG_RESTRICT
-#  define PNG_RESTRICT    /* The C99 "restrict" feature */
+#define PNG_RESTRICT /* The C99 "restrict" feature */
 #endif
-#ifndef PNG_FP_EXPORT     /* A floating point API. */
-#  ifdef PNG_FLOATING_POINT_SUPPORTED
-#     define PNG_FP_EXPORT(ordinal, type, name, args)\
-         PNG_EXPORT(ordinal, type, name, args);
-#  else                   /* No floating point APIs */
-#     define PNG_FP_EXPORT(ordinal, type, name, args)
-#  endif
+#ifndef PNG_FP_EXPORT /* A floating point API. */
+#ifdef PNG_FLOATING_POINT_SUPPORTED
+#define PNG_FP_EXPORT(ordinal, type, name, args) \
+  PNG_EXPORT(ordinal, type, name, args);
+#else /* No floating point APIs */
+#define PNG_FP_EXPORT(ordinal, type, name, args)
 #endif
-#ifndef PNG_FIXED_EXPORT  /* A fixed point API. */
-#  ifdef PNG_FIXED_POINT_SUPPORTED
-#     define PNG_FIXED_EXPORT(ordinal, type, name, args)\
-         PNG_EXPORT(ordinal, type, name, args);
-#  else                   /* No fixed point APIs */
-#     define PNG_FIXED_EXPORT(ordinal, type, name, args)
-#  endif
+#endif
+#ifndef PNG_FIXED_EXPORT /* A fixed point API. */
+#ifdef PNG_FIXED_POINT_SUPPORTED
+#define PNG_FIXED_EXPORT(ordinal, type, name, args) \
+  PNG_EXPORT(ordinal, type, name, args);
+#else /* No fixed point APIs */
+#define PNG_FIXED_EXPORT(ordinal, type, name, args)
+#endif
 #endif
 
 #ifndef PNG_BUILDING_SYMBOL_TABLE
 /* Some typedefs to get us started.  These should be safe on most of the common
  * platforms.
  *
  * png_uint_32 and png_int_32 may, currently, be larger than required to hold a
  * 32-bit value however this is not normally advisable.
  *
  * png_uint_16 and png_int_16 should always be two bytes in size - this is
  * verified at library build time.
  *
  * png_byte must always be one byte in size.
  *
  * The checks below use constants from limits.h, as defined by the ISOC90
  * standard.
  */
 #if CHAR_BIT == 8 && UCHAR_MAX == 255
-   typedef unsigned char png_byte;
+typedef unsigned char png_byte;
 #else
-#  error "libpng requires 8 bit bytes"
+#error "libpng requires 8 bit bytes"
 #endif
 
 #if INT_MIN == -32768 && INT_MAX == 32767
-   typedef int png_int_16;
+typedef int png_int_16;
 #elif SHRT_MIN == -32768 && SHRT_MAX == 32767
-   typedef short png_int_16;
+typedef short png_int_16;
 #else
-#  error "libpng requires a signed 16 bit type"
+#error "libpng requires a signed 16 bit type"
 #endif
 
 #if UINT_MAX == 65535
-   typedef unsigned int png_uint_16;
+typedef unsigned int png_uint_16;
 #elif USHRT_MAX == 65535
-   typedef unsigned short png_uint_16;
+typedef unsigned short png_uint_16;
 #else
-#  error "libpng requires an unsigned 16 bit type"
+#error "libpng requires an unsigned 16 bit type"
 #endif
 
 #if INT_MIN < -2147483646 && INT_MAX > 2147483646
-   typedef int png_int_32;
+typedef int png_int_32;
 #elif LONG_MIN < -2147483646 && LONG_MAX > 2147483646
-   typedef long int png_int_32;
+typedef long int png_int_32;
 #else
-#  error "libpng requires a signed 32 bit (or more) type"
+#error "libpng requires a signed 32 bit (or more) type"
 #endif
 
 #if UINT_MAX > 4294967294
-   typedef unsigned int png_uint_32;
+typedef unsigned int png_uint_32;
 #elif ULONG_MAX > 4294967294
-   typedef unsigned long int png_uint_32;
+typedef unsigned long int png_uint_32;
 #else
-#  error "libpng requires an unsigned 32 bit (or more) type"
+#error "libpng requires an unsigned 32 bit (or more) type"
 #endif
 
 /* Prior to 1.6.0 it was possible to disable the use of size_t, 1.6.0, however,
  * requires an ISOC90 compiler and relies on consistent behavior of sizeof.
  */
 typedef size_t png_size_t;
 typedef ptrdiff_t png_ptrdiff_t;
 
 /* libpng needs to know the maximum value of 'size_t' and this controls the
  * definition of png_alloc_size_t, below.  This maximum value of size_t limits
  * but does not control the maximum allocations the library makes - there is
  * direct application control of this through png_set_user_limits().
  */
 #ifndef PNG_SMALL_SIZE_T
-   /* Compiler specific tests for systems where size_t is known to be less than
-    * 32 bits (some of these systems may no longer work because of the lack of
-    * 'far' support; see above.)
-    */
-#  if (defined(__TURBOC__) && !defined(__FLAT__)) ||\
-   (defined(_MSC_VER) && defined(MAXSEG_64K))
-#     define PNG_SMALL_SIZE_T
-#  endif
+/* Compiler specific tests for systems where size_t is known to be less than
+ * 32 bits (some of these systems may no longer work because of the lack of
+ * 'far' support; see above.)
+ */
+#if (defined(__TURBOC__) && !defined(__FLAT__)) || \
+    (defined(_MSC_VER) && defined(MAXSEG_64K))
+#define PNG_SMALL_SIZE_T
+#endif
 #endif
 
 /* png_alloc_size_t is guaranteed to be no smaller than png_size_t, and no
  * smaller than png_uint_32.  Casts from png_size_t or png_uint_32 to
  * png_alloc_size_t are not necessary; in fact, it is recommended not to use
  * them at all so that the compiler can complain when something turns out to be
  * problematic.
  *
  * Casts in the other direction (from png_alloc_size_t to png_size_t or
  * png_uint_32) should be explicitly applied; however, we do not expect to
  * encounter practical situations that require such conversions.
  *
  * PNG_SMALL_SIZE_T must be defined if the maximum value of size_t is less than
  * 4294967295 - i.e. less than the maximum value of png_uint_32.
  */
 #ifdef PNG_SMALL_SIZE_T
-   typedef png_uint_32 png_alloc_size_t;
+typedef png_uint_32 png_alloc_size_t;
 #else
-   typedef png_size_t png_alloc_size_t;
+typedef png_size_t png_alloc_size_t;
 #endif
 
 /* Prior to 1.6.0 libpng offered limited support for Microsoft C compiler
  * implementations of Intel CPU specific support of user-mode segmented address
  * spaces, where 16-bit pointers address more than 65536 bytes of memory using
  * separate 'segment' registers.  The implementation requires two different
  * types of pointer (only one of which includes the segment value.)
  *
  * If required this support is available in version 1.2 of libpng and may be
  * available in versions through 1.5, although the correctness of the code has
  * not been verified recently.
  */
 
 /* Typedef for floating-point numbers that are converted to fixed-point with a
  * multiple of 100,000, e.g., gamma
  */
 typedef png_int_32 png_fixed_point;
 
 /* Add typedefs for pointers */
-typedef void                  * png_voidp;
-typedef const void            * png_const_voidp;
-typedef png_byte              * png_bytep;
-typedef const png_byte        * png_const_bytep;
-typedef png_uint_32           * png_uint_32p;
-typedef const png_uint_32     * png_const_uint_32p;
-typedef png_int_32            * png_int_32p;
-typedef const png_int_32      * png_const_int_32p;
-typedef png_uint_16           * png_uint_16p;
-typedef const png_uint_16     * png_const_uint_16p;
-typedef png_int_16            * png_int_16p;
-typedef const png_int_16      * png_const_int_16p;
-typedef char                  * png_charp;
-typedef const char            * png_const_charp;
-typedef png_fixed_point       * png_fixed_point_p;
-typedef const png_fixed_point * png_const_fixed_point_p;
-typedef png_size_t            * png_size_tp;
-typedef const png_size_t      * png_const_size_tp;
+typedef void* png_voidp;
+typedef const void* png_const_voidp;
+typedef png_byte* png_bytep;
+typedef const png_byte* png_const_bytep;
+typedef png_uint_32* png_uint_32p;
+typedef const png_uint_32* png_const_uint_32p;
+typedef png_int_32* png_int_32p;
+typedef const png_int_32* png_const_int_32p;
+typedef png_uint_16* png_uint_16p;
+typedef const png_uint_16* png_const_uint_16p;
+typedef png_int_16* png_int_16p;
+typedef const png_int_16* png_const_int_16p;
+typedef char* png_charp;
+typedef const char* png_const_charp;
+typedef png_fixed_point* png_fixed_point_p;
+typedef const png_fixed_point* png_const_fixed_point_p;
+typedef png_size_t* png_size_tp;
+typedef const png_size_t* png_const_size_tp;
 
 #ifdef PNG_STDIO_SUPPORTED
-typedef FILE            * png_FILE_p;
+typedef FILE* png_FILE_p;
 #endif
 
 #ifdef PNG_FLOATING_POINT_SUPPORTED
-typedef double       * png_doublep;
-typedef const double * png_const_doublep;
+typedef double* png_doublep;
+typedef const double* png_const_doublep;
 #endif
 
 /* Pointers to pointers; i.e. arrays */
-typedef png_byte        * * png_bytepp;
-typedef png_uint_32     * * png_uint_32pp;
-typedef png_int_32      * * png_int_32pp;
-typedef png_uint_16     * * png_uint_16pp;
-typedef png_int_16      * * png_int_16pp;
-typedef const char      * * png_const_charpp;
-typedef char            * * png_charpp;
-typedef png_fixed_point * * png_fixed_point_pp;
+typedef png_byte** png_bytepp;
+typedef png_uint_32** png_uint_32pp;
+typedef png_int_32** png_int_32pp;
+typedef png_uint_16** png_uint_16pp;
+typedef png_int_16** png_int_16pp;
+typedef const char** png_const_charpp;
+typedef char** png_charpp;
+typedef png_fixed_point** png_fixed_point_pp;
 #ifdef PNG_FLOATING_POINT_SUPPORTED
-typedef double          * * png_doublepp;
+typedef double** png_doublepp;
 #endif
 
 /* Pointers to pointers to pointers; i.e., pointer to array */
-typedef char            * * * png_charppp;
+typedef char*** png_charppp;
 
 #endif /* PNG_BUILDING_SYMBOL_TABLE */
 
 #endif /* PNGCONF_H */