src/mesa/main/compiler.h - platform/external/mesa3d - Gitiles

 /*
  * Mesa 3-D graphics library
  * Version:  7.5
  *
  * Copyright (C) 1999-2008  Brian Paul   All Rights Reserved.
  * Copyright (C) 2009  VMware, Inc.  All Rights Reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the "Software"),
  * to deal in the Software without restriction, including without limitation
  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  * and/or sell copies of the Software, and to permit persons to whom the
  * Software is furnished to do so, subject to the following conditions:
  *
  * The above copyright notice and this permission notice shall be included
  * in all copies or substantial portions of the Software.
  *
  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
  * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  */


 /**
  * \file compiler.h
  * Compiler-related stuff.
  */


 #ifndef COMPILER_H
 #define COMPILER_H


 #include <assert.h>
 #include <ctype.h>
 #if defined(__alpha__) && defined(CCPML)
 #include <cpml.h> /* use Compaq's Fast Math Library on Alpha */
 #else
 #include <math.h>
 #endif
 #include <limits.h>
 #include <stdlib.h>
 #include <stdio.h>
 #include <string.h>
 #if defined(__linux__) && defined(__i386__)
 #include <fpu_control.h>
 #endif
 #include <float.h>
 #include <stdarg.h>


 #ifdef __cplusplus
 extern "C" {
 #endif


 /**
  * Get standard integer types
  */
 #if defined(_MSC_VER)
    typedef __int8             int8_t;
    typedef unsigned __int8    uint8_t;
    typedef __int16            int16_t;
    typedef unsigned __int16   uint16_t;
    typedef __int32            int32_t;
    typedef unsigned __int32   uint32_t;
    typedef __int64            int64_t;
    typedef unsigned __int64   uint64_t;

 #  if defined(_WIN64)
      typedef __int64            intptr_t;
      typedef unsigned __int64   uintptr_t;
 #  else
      typedef __int32            intptr_t;
      typedef unsigned __int32   uintptr_t;
 #  endif

 #  define INT64_C(__val) __val##i64
 #  define UINT64_C(__val) __val##ui64
 #else
 #  include <stdint.h>
 #endif


 /**
   * Sun compilers define __i386 instead of the gcc-style __i386__
  */
 #ifdef __SUNPRO_C
 # if !defined(__i386__) && defined(__i386)
 #  define __i386__
 # elif !defined(__amd64__) && defined(__amd64)
 #  define __amd64__
 # elif !defined(__sparc__) && defined(__sparc)
 #  define __sparc__
 # endif
 # if !defined(__volatile)
 #  define __volatile volatile
 # endif
 #endif


 /**
  * finite macro.
  */
 #if defined(_MSC_VER)
 #  define finite _finite
 #elif defined(__WATCOMC__)
 #  define finite _finite
 #endif


 /**
  * Disable assorted warnings
  */
 #if !defined(OPENSTEP) && (defined(__WIN32__) && !defined(__CYGWIN__)) && !defined(BUILD_FOR_SNAP)
 #  if !defined(__GNUC__) /* mingw environment */
 #    pragma warning( disable : 4068 ) /* unknown pragma */
 #    pragma warning( disable : 4710 ) /* function 'foo' not inlined */
 #    pragma warning( disable : 4711 ) /* function 'foo' selected for automatic inline expansion */
 #    pragma warning( disable : 4127 ) /* conditional expression is constant */
 #    if defined(MESA_MINWARN)
 #      pragma warning( disable : 4244 ) /* '=' : conversion from 'const double ' to 'float ', possible loss of data */
 #      pragma warning( disable : 4018 ) /* '<' : signed/unsigned mismatch */
 #      pragma warning( disable : 4305 ) /* '=' : truncation from 'const double ' to 'float ' */
 #      pragma warning( disable : 4550 ) /* 'function' undefined; assuming extern returning int */
 #      pragma warning( disable : 4761 ) /* integral size mismatch in argument; conversion supplied */
 #    endif
 #  endif
 #endif
 #if defined(__WATCOMC__)
 #  pragma disable_message(201) /* Disable unreachable code warnings */
 #endif


 /**
  * Function inlining
  */
 #if defined(__GNUC__)
 #  define INLINE __inline__
 #elif defined(__MSC__)
 #  define INLINE __inline
 #elif defined(_MSC_VER)
 #  define INLINE __inline
 #elif defined(__ICL)
 #  define INLINE __inline
 #elif defined(__INTEL_COMPILER)
 #  define INLINE inline
 #elif defined(__WATCOMC__) && (__WATCOMC__ >= 1100)
 #  define INLINE __inline
 #elif defined(__SUNPRO_C) && defined(__C99FEATURES__)
 #  define INLINE inline
 #  define __inline inline
 #  define __inline__ inline
 #elif (__STDC_VERSION__ >= 199901L) /* C99 */
 #  define INLINE inline
 #else
 #  define INLINE
 #endif


 /**
  * PUBLIC/USED macros
  *
  * If we build the library with gcc's -fvisibility=hidden flag, we'll
  * use the PUBLIC macro to mark functions that are to be exported.
  *
  * We also need to define a USED attribute, so the optimizer doesn't
  * inline a static function that we later use in an alias. - ajax
  */
 #if defined(__GNUC__) || (defined(__SUNPRO_C) && (__SUNPRO_C >= 0x590))
 #  define PUBLIC __attribute__((visibility("default")))
 #  define USED __attribute__((used))
 #else
 #  define PUBLIC
 #  define USED
 #endif


 /**
  * Some compilers don't like some of Mesa's const usage.  In those places use
  * CONST instead of const.  Pass -DNO_CONST to compilers where this matters.
  */
 #ifdef NO_CONST
 #  define CONST
 #else
 #  define CONST const
 #endif


 /**
  * __builtin_expect macros
  */
 #if !defined(__GNUC__)
 #  define __builtin_expect(x, y) x
 #endif

 #ifdef __GNUC__
 #define likely(x) __builtin_expect(!!(x), 1)
 #define unlikely(x) __builtin_expect(!!(x), 0)
 #else
 #define likely(x) !!(x)
 #define unlikely(x) !!(x)
 #endif

 /**
  * The __FUNCTION__ gcc variable is generally only used for debugging.
  * If we're not using gcc, define __FUNCTION__ as a cpp symbol here.
  * Don't define it if using a newer Windows compiler.
  */
 #ifndef __FUNCTION__
 # if defined(__VMS)
 #  define __FUNCTION__ "VMS$NL:"
 # elif !defined(__GNUC__) && !defined(__xlC__) &&	\
       (!defined(_MSC_VER) || _MSC_VER < 1300)
 #  if (__STDC_VERSION__ >= 199901L) /* C99 */ || \
     (defined(__SUNPRO_C) && defined(__C99FEATURES__))
 #   define __FUNCTION__ __func__
 #  else
 #   define __FUNCTION__ "<unknown>"
 #  endif
 # endif
 #endif
 #ifndef __func__
 #  if (__STDC_VERSION__ >= 199901L) || \
       (defined(__SUNPRO_C) && defined(__C99FEATURES__))
        /* __func__ is part of C99 */
 #  elif defined(_MSC_VER)
 #    if _MSC_VER >= 1300
 #      define __func__ __FUNCTION__
 #    else
 #      define __func__ "<unknown>"
 #    endif
 #  endif
 #endif


 /**
  * Either define MESA_BIG_ENDIAN or MESA_LITTLE_ENDIAN, and CPU_TO_LE32.
  * Do not use these unless absolutely necessary!
  * Try to use a runtime test instead.
  * For now, only used by some DRI hardware drivers for color/texel packing.
  */
 #if defined(BYTE_ORDER) && defined(BIG_ENDIAN) && BYTE_ORDER == BIG_ENDIAN
 #if defined(__linux__)
 #include <byteswap.h>
 #define CPU_TO_LE32( x )	bswap_32( x )
 #elif defined(__APPLE__)
 #include <CoreFoundation/CFByteOrder.h>
 #define CPU_TO_LE32( x )	CFSwapInt32HostToLittle( x )
 #elif (defined(_AIX) || defined(__blrts))
 static INLINE GLuint CPU_TO_LE32(GLuint x)
 {
    return (((x & 0x000000ff) << 24) |
            ((x & 0x0000ff00) <<  8) |
            ((x & 0x00ff0000) >>  8) |
            ((x & 0xff000000) >> 24));
 }
 #else /*__linux__ */
 #include <sys/endian.h>
 #define CPU_TO_LE32( x )	bswap32( x )
 #endif /*__linux__*/
 #define MESA_BIG_ENDIAN 1
 #else
 #define CPU_TO_LE32( x )	( x )
 #define MESA_LITTLE_ENDIAN 1
 #endif
 #define LE32_TO_CPU( x )	CPU_TO_LE32( x )


 #if !defined(CAPI) && defined(WIN32) && !defined(BUILD_FOR_SNAP)
 #define CAPI _cdecl
 #endif


 /**
  * Create a macro so that asm functions can be linked into compilers other
  * than GNU C
  */
 #ifndef _ASMAPI
 #if defined(WIN32) && !defined(BUILD_FOR_SNAP)/* was: !defined( __GNUC__ ) && !defined( VMS ) && !defined( __INTEL_COMPILER )*/
 #define _ASMAPI __cdecl
 #else
 #define _ASMAPI
 #endif
 #ifdef	PTR_DECL_IN_FRONT
 #define	_ASMAPIP * _ASMAPI
 #else
 #define	_ASMAPIP _ASMAPI *
 #endif
 #endif

 #ifdef USE_X86_ASM
 #define _NORMAPI _ASMAPI
 #define _NORMAPIP _ASMAPIP
 #else
 #define _NORMAPI
 #define _NORMAPIP *
 #endif


 /* This is a macro on IRIX */
 #ifdef _P
 #undef _P
 #endif


 /* Turn off macro checking systems used by other libraries */
 #ifdef CHECK
 #undef CHECK
 #endif


 /**
  * ASSERT macro
  */
 #if !defined(_WIN32_WCE)
 #if defined(BUILD_FOR_SNAP) && defined(CHECKED)
 #  define ASSERT(X)   _CHECK(X)
 #elif defined(DEBUG)
 #  define ASSERT(X)   assert(X)
 #else
 #  define ASSERT(X)
 #endif
 #endif

 #if (__GNUC__ >= 3)
 #define PRINTFLIKE(f, a) __attribute__ ((format(__printf__, f, a)))
 #else
 #define PRINTFLIKE(f, a)
 #endif

 #ifndef NULL
 #define NULL 0
 #endif


 /**
  * LONGSTRING macro
  * gcc -pedantic warns about long string literals, LONGSTRING silences that.
  */
 #if !defined(__GNUC__)
 # define LONGSTRING
 #else
 # define LONGSTRING __extension__
 #endif


 #ifndef M_PI
 #define M_PI (3.1415926536)
 #endif

 #ifndef M_E
 #define M_E (2.7182818284590452354)
 #endif

 #ifndef M_LOG2E
 #define M_LOG2E     (1.4426950408889634074)
 #endif

 #ifndef ONE_DIV_LN2
 #define ONE_DIV_LN2 (1.442695040888963456)
 #endif

 #ifndef ONE_DIV_SQRT_LN2
 #define ONE_DIV_SQRT_LN2 (1.201122408786449815)
 #endif

 #ifndef FLT_MAX_EXP
 #define FLT_MAX_EXP 128
 #endif


 /**
  * USE_IEEE: Determine if we're using IEEE floating point
  */
 #if defined(__i386__) || defined(__386__) || defined(__sparc__) || \
     defined(__s390x__) || defined(__powerpc__) || \
     defined(__x86_64__) || \
     defined(ia64) || defined(__ia64__) || \
     defined(__hppa__) || defined(hpux) || \
     defined(__mips) || defined(_MIPS_ARCH) || \
     defined(__arm__) || \
     defined(__sh__) || defined(__m32r__) || \
     (defined(__sun) && defined(_IEEE_754)) || \
     (defined(__alpha__) && (defined(__IEEE_FLOAT) || !defined(VMS)))
 #define USE_IEEE
 #define IEEE_ONE 0x3f800000
 #endif


 /**
  * START/END_FAST_MATH macros:
  *
  * START_FAST_MATH: Set x86 FPU to faster, 32-bit precision mode (and save
  *                  original mode to a temporary).
  * END_FAST_MATH: Restore x86 FPU to original mode.
  */
 #if defined(__GNUC__) && defined(__i386__)
 /*
  * Set the x86 FPU control word to guarentee only 32 bits of precision
  * are stored in registers.  Allowing the FPU to store more introduces
  * differences between situations where numbers are pulled out of memory
  * vs. situations where the compiler is able to optimize register usage.
  *
  * In the worst case, we force the compiler to use a memory access to
  * truncate the float, by specifying the 'volatile' keyword.
  */
 /* Hardware default: All exceptions masked, extended double precision,
  * round to nearest (IEEE compliant):
  */
 #define DEFAULT_X86_FPU		0x037f
 /* All exceptions masked, single precision, round to nearest:
  */
 #define FAST_X86_FPU		0x003f
 /* The fldcw instruction will cause any pending FP exceptions to be
  * raised prior to entering the block, and we clear any pending
  * exceptions before exiting the block.  Hence, asm code has free
  * reign over the FPU while in the fast math block.
  */
 #if defined(NO_FAST_MATH)
 #define START_FAST_MATH(x)						\
 do {									\
    static GLuint mask = DEFAULT_X86_FPU;				\
    __asm__ ( "fnstcw %0" : "=m" (*&(x)) );				\
    __asm__ ( "fldcw %0" : : "m" (mask) );				\
 } while (0)
 #else
 #define START_FAST_MATH(x)						\
 do {									\
    static GLuint mask = FAST_X86_FPU;					\
    __asm__ ( "fnstcw %0" : "=m" (*&(x)) );				\
    __asm__ ( "fldcw %0" : : "m" (mask) );				\
 } while (0)
 #endif
 /* Restore original FPU mode, and clear any exceptions that may have
  * occurred in the FAST_MATH block.
  */
 #define END_FAST_MATH(x)						\
 do {									\
    __asm__ ( "fnclex ; fldcw %0" : : "m" (*&(x)) );			\
 } while (0)

 #elif defined(__WATCOMC__) && defined(__386__)
 #define DEFAULT_X86_FPU		0x037f /* See GCC comments above */
 #define FAST_X86_FPU		0x003f /* See GCC comments above */
 void _watcom_start_fast_math(unsigned short *x,unsigned short *mask);
 #pragma aux _watcom_start_fast_math =                                   \
    "fnstcw  word ptr [eax]"                                             \
    "fldcw   word ptr [ecx]"                                             \
    parm [eax] [ecx]                                                     \
    modify exact [];
 void _watcom_end_fast_math(unsigned short *x);
 #pragma aux _watcom_end_fast_math =                                     \
    "fnclex"                                                             \
    "fldcw   word ptr [eax]"                                             \
    parm [eax]                                                           \
    modify exact [];
 #if defined(NO_FAST_MATH)
 #define START_FAST_MATH(x)                                              \
 do {                                                                    \
    static GLushort mask = DEFAULT_X86_FPU;	                        \
    _watcom_start_fast_math(&x,&mask);                                   \
 } while (0)
 #else
 #define START_FAST_MATH(x)                                              \
 do {                                                                    \
    static GLushort mask = FAST_X86_FPU;                                 \
    _watcom_start_fast_math(&x,&mask);                                   \
 } while (0)
 #endif
 #define END_FAST_MATH(x)  _watcom_end_fast_math(&x)

 #elif defined(_MSC_VER) && defined(_M_IX86)
 #define DEFAULT_X86_FPU		0x037f /* See GCC comments above */
 #define FAST_X86_FPU		0x003f /* See GCC comments above */
 #if defined(NO_FAST_MATH)
 #define START_FAST_MATH(x) do {\
 	static GLuint mask = DEFAULT_X86_FPU;\
 	__asm fnstcw word ptr [x]\
 	__asm fldcw word ptr [mask]\
 } while(0)
 #else
 #define START_FAST_MATH(x) do {\
 	static GLuint mask = FAST_X86_FPU;\
 	__asm fnstcw word ptr [x]\
 	__asm fldcw word ptr [mask]\
 } while(0)
 #endif
 #define END_FAST_MATH(x) do {\
 	__asm fnclex\
 	__asm fldcw word ptr [x]\
 } while(0)

 #else
 #define START_FAST_MATH(x)  x = 0
 #define END_FAST_MATH(x)  (void)(x)
 #endif


 #ifndef Elements
 #define Elements(x) (sizeof(x)/sizeof(*(x)))
 #endif


 #ifdef __cplusplus
 }
 #endif


 #endif /* COMPILER_H */
	/*
	* Mesa 3-D graphics library
	* Version: 7.5
	*
	* Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
	* Copyright (C) 2009 VMware, Inc. All Rights Reserved.
	*
	* Permission is hereby granted, free of charge, to any person obtaining a
	* copy of this software and associated documentation files (the "Software"),
	* to deal in the Software without restriction, including without limitation
	* the rights to use, copy, modify, merge, publish, distribute, sublicense,
	* and/or sell copies of the Software, and to permit persons to whom the
	* Software is furnished to do so, subject to the following conditions:
	*
	* The above copyright notice and this permission notice shall be included
	* in all copies or substantial portions of the Software.
	*
	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
	* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
	* BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
	* AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
	* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
	*/


	/**
	* \file compiler.h
	* Compiler-related stuff.
	*/


	#ifndef COMPILER_H
	#define COMPILER_H


	#include <assert.h>
	#include <ctype.h>
	#if defined(__alpha__) && defined(CCPML)
	#include <cpml.h> /* use Compaq's Fast Math Library on Alpha */
	#else
	#include <math.h>
	#endif
	#include <limits.h>
	#include <stdlib.h>
	#include <stdio.h>
	#include <string.h>
	#if defined(__linux__) && defined(__i386__)
	#include <fpu_control.h>
	#endif
	#include <float.h>
	#include <stdarg.h>


	#ifdef __cplusplus
	extern "C" {
	#endif


	/**
	* Get standard integer types
	*/
	#if defined(_MSC_VER)
	typedef __int8 int8_t;
	typedef unsigned __int8 uint8_t;
	typedef __int16 int16_t;
	typedef unsigned __int16 uint16_t;
	typedef __int32 int32_t;
	typedef unsigned __int32 uint32_t;
	typedef __int64 int64_t;
	typedef unsigned __int64 uint64_t;

	# if defined(_WIN64)
	typedef __int64 intptr_t;
	typedef unsigned __int64 uintptr_t;
	# else
	typedef __int32 intptr_t;
	typedef unsigned __int32 uintptr_t;
	# endif

	# define INT64_C(__val) __val##i64
	# define UINT64_C(__val) __val##ui64
	#else
	# include <stdint.h>
	#endif


	/**
	* Sun compilers define __i386 instead of the gcc-style __i386__
	*/
	#ifdef __SUNPRO_C
	# if !defined(__i386__) && defined(__i386)
	# define __i386__
	# elif !defined(__amd64__) && defined(__amd64)
	# define __amd64__
	# elif !defined(__sparc__) && defined(__sparc)
	# define __sparc__
	# endif
	# if !defined(__volatile)
	# define __volatile volatile
	# endif
	#endif


	/**
	* finite macro.
	*/
	#if defined(_MSC_VER)
	# define finite _finite
	#elif defined(__WATCOMC__)
	# define finite _finite
	#endif


	/**
	* Disable assorted warnings
	*/
	#if !defined(OPENSTEP) && (defined(__WIN32__) && !defined(__CYGWIN__)) && !defined(BUILD_FOR_SNAP)
	# if !defined(__GNUC__) /* mingw environment */
	# pragma warning( disable : 4068 ) /* unknown pragma */
	# pragma warning( disable : 4710 ) /* function 'foo' not inlined */
	# pragma warning( disable : 4711 ) /* function 'foo' selected for automatic inline expansion */
	# pragma warning( disable : 4127 ) /* conditional expression is constant */
	# if defined(MESA_MINWARN)
	# pragma warning( disable : 4244 ) /* '=' : conversion from 'const double ' to 'float ', possible loss of data */
	# pragma warning( disable : 4018 ) /* '<' : signed/unsigned mismatch */
	# pragma warning( disable : 4305 ) /* '=' : truncation from 'const double ' to 'float ' */
	# pragma warning( disable : 4550 ) /* 'function' undefined; assuming extern returning int */
	# pragma warning( disable : 4761 ) /* integral size mismatch in argument; conversion supplied */
	# endif
	# endif
	#endif
	#if defined(__WATCOMC__)
	# pragma disable_message(201) /* Disable unreachable code warnings */
	#endif



	/**
	* Function inlining
	*/
	#if defined(__GNUC__)
	# define INLINE __inline__
	#elif defined(__MSC__)
	# define INLINE __inline
	#elif defined(_MSC_VER)
	# define INLINE __inline
	#elif defined(__ICL)
	# define INLINE __inline
	#elif defined(__INTEL_COMPILER)
	# define INLINE inline
	#elif defined(__WATCOMC__) && (__WATCOMC__ >= 1100)
	# define INLINE __inline
	#elif defined(__SUNPRO_C) && defined(__C99FEATURES__)
	# define INLINE inline
	# define __inline inline
	# define __inline__ inline
	#elif (__STDC_VERSION__ >= 199901L) /* C99 */
	# define INLINE inline
	#else
	# define INLINE
	#endif


	/**
	* PUBLIC/USED macros
	*
	* If we build the library with gcc's -fvisibility=hidden flag, we'll
	* use the PUBLIC macro to mark functions that are to be exported.
	*
	* We also need to define a USED attribute, so the optimizer doesn't
	* inline a static function that we later use in an alias. - ajax
	*/
	#if defined(__GNUC__) \|\| (defined(__SUNPRO_C) && (__SUNPRO_C >= 0x590))
	# define PUBLIC __attribute__((visibility("default")))
	# define USED __attribute__((used))
	#else
	# define PUBLIC
	# define USED
	#endif


	/**
	* Some compilers don't like some of Mesa's const usage. In those places use
	* CONST instead of const. Pass -DNO_CONST to compilers where this matters.
	*/
	#ifdef NO_CONST
	# define CONST
	#else
	# define CONST const
	#endif


	/**
	* __builtin_expect macros
	*/
	#if !defined(__GNUC__)
	# define __builtin_expect(x, y) x
	#endif

	#ifdef __GNUC__
	#define likely(x) __builtin_expect(!!(x), 1)
	#define unlikely(x) __builtin_expect(!!(x), 0)
	#else
	#define likely(x) !!(x)
	#define unlikely(x) !!(x)
	#endif

	/**
	* The __FUNCTION__ gcc variable is generally only used for debugging.
	* If we're not using gcc, define __FUNCTION__ as a cpp symbol here.
	* Don't define it if using a newer Windows compiler.
	*/
	#ifndef __FUNCTION__
	# if defined(__VMS)
	# define __FUNCTION__ "VMS$NL:"
	# elif !defined(__GNUC__) && !defined(__xlC__) && \
	(!defined(_MSC_VER) \|\| _MSC_VER < 1300)
	# if (__STDC_VERSION__ >= 199901L) /* C99 */ \|\| \
	(defined(__SUNPRO_C) && defined(__C99FEATURES__))
	# define __FUNCTION__ __func__
	# else
	# define __FUNCTION__ "<unknown>"
	# endif
	# endif
	#endif
	#ifndef __func__
	# if (__STDC_VERSION__ >= 199901L) \|\| \
	(defined(__SUNPRO_C) && defined(__C99FEATURES__))
	/* __func__ is part of C99 */
	# elif defined(_MSC_VER)
	# if _MSC_VER >= 1300
	# define __func__ __FUNCTION__
	# else
	# define __func__ "<unknown>"
	# endif
	# endif
	#endif


	/**
	* Either define MESA_BIG_ENDIAN or MESA_LITTLE_ENDIAN, and CPU_TO_LE32.
	* Do not use these unless absolutely necessary!
	* Try to use a runtime test instead.
	* For now, only used by some DRI hardware drivers for color/texel packing.
	*/
	#if defined(BYTE_ORDER) && defined(BIG_ENDIAN) && BYTE_ORDER == BIG_ENDIAN
	#if defined(__linux__)
	#include <byteswap.h>
	#define CPU_TO_LE32( x ) bswap_32( x )
	#elif defined(__APPLE__)
	#include <CoreFoundation/CFByteOrder.h>
	#define CPU_TO_LE32( x ) CFSwapInt32HostToLittle( x )
	#elif (defined(_AIX) \|\| defined(__blrts))
	static INLINE GLuint CPU_TO_LE32(GLuint x)
	{
	return (((x & 0x000000ff) << 24) \|
	((x & 0x0000ff00) << 8) \|
	((x & 0x00ff0000) >> 8) \|
	((x & 0xff000000) >> 24));
	}
	#else /__linux__ /
	#include <sys/endian.h>
	#define CPU_TO_LE32( x ) bswap32( x )
	#endif /__linux__/
	#define MESA_BIG_ENDIAN 1
	#else
	#define CPU_TO_LE32( x ) ( x )
	#define MESA_LITTLE_ENDIAN 1
	#endif
	#define LE32_TO_CPU( x ) CPU_TO_LE32( x )



	#if !defined(CAPI) && defined(WIN32) && !defined(BUILD_FOR_SNAP)
	#define CAPI _cdecl
	#endif


	/**
	* Create a macro so that asm functions can be linked into compilers other
	* than GNU C
	*/
	#ifndef _ASMAPI
	#if defined(WIN32) && !defined(BUILD_FOR_SNAP)/* was: !defined( __GNUC__ ) && !defined( VMS ) && !defined( __INTEL_COMPILER )*/
	#define _ASMAPI __cdecl
	#else
	#define _ASMAPI
	#endif
	#ifdef PTR_DECL_IN_FRONT
	#define _ASMAPIP * _ASMAPI
	#else
	#define _ASMAPIP _ASMAPI *
	#endif
	#endif

	#ifdef USE_X86_ASM
	#define _NORMAPI _ASMAPI
	#define _NORMAPIP _ASMAPIP
	#else
	#define _NORMAPI
	#define _NORMAPIP *
	#endif


	/* This is a macro on IRIX */
	#ifdef _P
	#undef _P
	#endif


	/* Turn off macro checking systems used by other libraries */
	#ifdef CHECK
	#undef CHECK
	#endif


	/**
	* ASSERT macro
	*/
	#if !defined(_WIN32_WCE)
	#if defined(BUILD_FOR_SNAP) && defined(CHECKED)
	# define ASSERT(X) _CHECK(X)
	#elif defined(DEBUG)
	# define ASSERT(X) assert(X)
	#else
	# define ASSERT(X)
	#endif
	#endif

	#if (__GNUC__ >= 3)
	#define PRINTFLIKE(f, a) __attribute__ ((format(__printf__, f, a)))
	#else
	#define PRINTFLIKE(f, a)
	#endif

	#ifndef NULL
	#define NULL 0
	#endif


	/**
	* LONGSTRING macro
	* gcc -pedantic warns about long string literals, LONGSTRING silences that.
	*/
	#if !defined(__GNUC__)
	# define LONGSTRING
	#else
	# define LONGSTRING __extension__
	#endif


	#ifndef M_PI
	#define M_PI (3.1415926536)
	#endif

	#ifndef M_E
	#define M_E (2.7182818284590452354)
	#endif

	#ifndef M_LOG2E
	#define M_LOG2E (1.4426950408889634074)
	#endif

	#ifndef ONE_DIV_LN2
	#define ONE_DIV_LN2 (1.442695040888963456)
	#endif

	#ifndef ONE_DIV_SQRT_LN2
	#define ONE_DIV_SQRT_LN2 (1.201122408786449815)
	#endif

	#ifndef FLT_MAX_EXP
	#define FLT_MAX_EXP 128
	#endif


	/**
	* USE_IEEE: Determine if we're using IEEE floating point
	*/
	#if defined(__i386__) \|\| defined(__386__) \|\| defined(__sparc__) \|\| \
	defined(__s390x__) \|\| defined(__powerpc__) \|\| \
	defined(__x86_64__) \|\| \
	defined(ia64) \|\| defined(__ia64__) \|\| \
	defined(__hppa__) \|\| defined(hpux) \|\| \
	defined(__mips) \|\| defined(_MIPS_ARCH) \|\| \
	defined(__arm__) \|\| \
	defined(__sh__) \|\| defined(__m32r__) \|\| \
	(defined(__sun) && defined(_IEEE_754)) \|\| \
	(defined(__alpha__) && (defined(__IEEE_FLOAT) \|\| !defined(VMS)))
	#define USE_IEEE
	#define IEEE_ONE 0x3f800000
	#endif


	/**
	* START/END_FAST_MATH macros:
	*
	* START_FAST_MATH: Set x86 FPU to faster, 32-bit precision mode (and save
	* original mode to a temporary).
	* END_FAST_MATH: Restore x86 FPU to original mode.
	*/
	#if defined(__GNUC__) && defined(__i386__)
	/*
	* Set the x86 FPU control word to guarentee only 32 bits of precision
	* are stored in registers. Allowing the FPU to store more introduces
	* differences between situations where numbers are pulled out of memory
	* vs. situations where the compiler is able to optimize register usage.
	*
	* In the worst case, we force the compiler to use a memory access to
	* truncate the float, by specifying the 'volatile' keyword.
	*/
	/* Hardware default: All exceptions masked, extended double precision,
	* round to nearest (IEEE compliant):
	*/
	#define DEFAULT_X86_FPU 0x037f
	/* All exceptions masked, single precision, round to nearest:
	*/
	#define FAST_X86_FPU 0x003f
	/* The fldcw instruction will cause any pending FP exceptions to be
	* raised prior to entering the block, and we clear any pending
	* exceptions before exiting the block. Hence, asm code has free
	* reign over the FPU while in the fast math block.
	*/
	#if defined(NO_FAST_MATH)
	#define START_FAST_MATH(x) \
	do { \
	static GLuint mask = DEFAULT_X86_FPU; \
	__asm__ ( "fnstcw %0" : "=m" (*&(x)) ); \
	__asm__ ( "fldcw %0" : : "m" (mask) ); \
	} while (0)
	#else
	#define START_FAST_MATH(x) \
	do { \
	static GLuint mask = FAST_X86_FPU; \
	__asm__ ( "fnstcw %0" : "=m" (*&(x)) ); \
	__asm__ ( "fldcw %0" : : "m" (mask) ); \
	} while (0)
	#endif
	/* Restore original FPU mode, and clear any exceptions that may have
	* occurred in the FAST_MATH block.
	*/
	#define END_FAST_MATH(x) \
	do { \
	__asm__ ( "fnclex ; fldcw %0" : : "m" (*&(x)) ); \
	} while (0)

	#elif defined(__WATCOMC__) && defined(__386__)
	#define DEFAULT_X86_FPU 0x037f /* See GCC comments above */
	#define FAST_X86_FPU 0x003f /* See GCC comments above */
	void _watcom_start_fast_math(unsigned short x,unsigned short mask);
	#pragma aux _watcom_start_fast_math = \
	"fnstcw word ptr [eax]" \
	"fldcw word ptr [ecx]" \
	parm [eax] [ecx] \
	modify exact [];
	void _watcom_end_fast_math(unsigned short *x);
	#pragma aux _watcom_end_fast_math = \
	"fnclex" \
	"fldcw word ptr [eax]" \
	parm [eax] \
	modify exact [];
	#if defined(NO_FAST_MATH)
	#define START_FAST_MATH(x) \
	do { \
	static GLushort mask = DEFAULT_X86_FPU; \
	_watcom_start_fast_math(&x,&mask); \
	} while (0)
	#else
	#define START_FAST_MATH(x) \
	do { \
	static GLushort mask = FAST_X86_FPU; \
	_watcom_start_fast_math(&x,&mask); \
	} while (0)
	#endif
	#define END_FAST_MATH(x) _watcom_end_fast_math(&x)

	#elif defined(_MSC_VER) && defined(_M_IX86)
	#define DEFAULT_X86_FPU 0x037f /* See GCC comments above */
	#define FAST_X86_FPU 0x003f /* See GCC comments above */
	#if defined(NO_FAST_MATH)
	#define START_FAST_MATH(x) do {\
	static GLuint mask = DEFAULT_X86_FPU;\
	__asm fnstcw word ptr [x]\
	__asm fldcw word ptr [mask]\
	} while(0)
	#else
	#define START_FAST_MATH(x) do {\
	static GLuint mask = FAST_X86_FPU;\
	__asm fnstcw word ptr [x]\
	__asm fldcw word ptr [mask]\
	} while(0)
	#endif
	#define END_FAST_MATH(x) do {\
	__asm fnclex\
	__asm fldcw word ptr [x]\
	} while(0)

	#else
	#define START_FAST_MATH(x) x = 0
	#define END_FAST_MATH(x) (void)(x)
	#endif


	#ifndef Elements
	#define Elements(x) (sizeof(x)/sizeof(*(x)))
	#endif



	#ifdef __cplusplus
	}
	#endif


	#endif /* COMPILER_H */