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+/*
+ * 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;
+# ifndef __eglplatform_h_
+ typedef __int32 int32_t;
+# endif
+ 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(_WIN32) && !defined(__WIN32__) && !defined(__CYGWIN__) && !defined(BUILD_FOR_SNAP)
+# define __WIN32__
+# 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__) && (__GNUC__ * 100 + __GNUC_MINOR__) >= 303
+# 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__) || __GNUC__ < 3) && (!defined(__IBMC__) || __IBMC__ < 900)
+# define __builtin_expect(x, y) 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__) || (__GNUC__ < 2)) && (!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
+
+
+/**
+ * Either define MESA_BIG_ENDIAN or MESA_LITTLE_ENDIAN.
+ * Do not use them 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 )
+#else /*__linux__ __APPLE__*/
+#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
+
+
+#ifndef NULL
+#define NULL 0
+#endif
+
+
+/**
+ * LONGSTRING macro
+ * gcc -pedantic warns about long string literals, LONGSTRING silences that.
+ */
+#if !defined(__GNUC__) || (__GNUC__ < 2) || \
+ ((__GNUC__ == 2) && (__GNUC_MINOR__ <= 7))
+# 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 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 */