File size: 10,121 Bytes
d4035c1 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 | /** @file host.h
** @author Andrea Vedaldi
** @brief Host
**/
/* AUTORIGHTS
Copyright (C) 2007-09 Andrea Vedaldi and Brian Fulkerson
This file is part of VLFeat, available in the terms of the GNU
General Public License version 2.
*/
#ifndef VL_HOST_H
#define VL_HOST_H
/*
The following macros identify the host OS, architecture and compiler.
They are derived from http://predef.sourceforge.net/
*/
/** @name Identifying the host operating system
** @{ */
#if defined(linux) || \
defined(__linux) || \
defined(__linux__) || \
defined(__DOXYGEN__)
#define VL_OS_LINUX 1
#endif
#if (defined(__APPLE__) & defined(__MACH__)) || \
defined(__DOXYGEN__)
#define VL_OS_MACOSX 1
#endif
#if defined(__WIN32__) || \
defined(_WIN32) || \
defined(__DOXYGEN__)
#define VL_OS_WIN 1
#endif
#if defined(_WIN64) || \
defined(__DOXYGEN__)
#define VL_OS_WIN64 1
#endif
/** @} */
/** @name Identifying the host compiler
** @{ */
#if defined(__GNUC__) || defined(__DOXYGEN__)
# if defined(__GNUC_PATCHLEVEL__)
# define VL_COMPILER_GNUC (__GNUC__ * 10000 \
+ __GNUC_MINOR__ * 100 \
+ __GNUC_PATCHLEVEL__)
# else
# define VL_COMPILER_GNUC (__GNUC__ * 10000 \
+ __GNUC_MINOR__ * 100)
# endif
#endif
#if defined(_MSC_VER) || defined(__DOXYGEN__)
#define VL_COMPILER_MSC _MSC_VER
#endif
#if defined(__LCC__) || defined(__DOXYGEN__)
#warning "LCC support is experimental!"
#define VL_COMPILER_LCC 1
#endif
/** @} */
/** @name Identifying the host CPU architecture
** @{ */
#if defined(i386) || \
defined(__i386__) || \
defined(__DOXYGEN__)
#define VL_ARCH_IX86 300
#elif defined(__i486__)
#define VL_ARCH_IX86 400
#elif defined(__i586__)
#define VL_ARCH_IX86 500
#elif defined(__i686__)
#define VL_ARCH_IX86 600
#elif defined(_M_IX86)
#define VL_ARCH_IX86 _M_IX86
#endif
#if defined(_M_X64) || \
defined(__amd64__) || \
defined(__amd64) || \
defined(__x86_64) || \
defined(__x86_64)
#define VL_ARCH_X64
#endif
#if defined(__ia64__) || \
defined(_IA64) || \
defined(__IA64) || \
defined(__ia64) || \
defined(_M_IA64) || \
defined(__DOXYGEN__)
#define VL_ARCH_IA64
#endif
/** @} */
/** @name Identifying the host data model
** @{ */
#if defined(__LLP64__) || \
defined(__LLP64) || \
defined(__LLP64) || \
(defined(VL_COMPILER_MSC) & defined(VL_OS_WIN64)) || \
(defined(VL_COMPILER_LCC) & defined(VL_OS_WIN64)) || \
defined(__DOXYGEN__)
#define VL_COMPILER_LLP64
#endif
#if defined(__LP64__) || \
defined(__LP64) || \
defined(__LP64) || \
(defined(VL_OS_MACOSX) & defined(VL_ARCH_IA64)) || \
defined(__DOXYGEN__)
#define VL_COMPILER_LP64
#endif
#if (!defined(VL_COMPILER_LLP64) & !defined(VL_COMPILER_LP64)) || \
defined(__DOXYGEN__)
#define VL_COMPILER_ILP32
#endif
/** @} */
/** @name Identifying the host endianness
** @{ */
#if defined(__LITTLE_ENDIAN__) || \
defined(VL_ARCH_IX86) || \
defined(VL_ARCH_IA64) || \
defined(VL_ARCH_X68) || \
defined(__DOXYGEN__)
#define VL_ARCH_LITTLE_ENDIAN
#endif
#if defined(__DOXYGEN__) || \
!defined(VL_ARCH_LITTLE_ENDIAN)
#define VL_ARCH_BIG_ENDIAN
#endif
/** @} */
#if defined(VL_COMPILER_MSC)
#define VL_INLINE static __inline
#define snprintf _snprintf
#define isnan _isnan
#ifdef VL_BUILD_DLL
#define VL_EXPORT __declspec(dllexport)
#else
#define VL_EXPORT __declspec(dllimport)
#endif
#endif
#if defined(VL_COMPILER_LCC)
#define VL_INLINE static __inline
#define snprintf _snprintf
#define isnan _isnan
#ifdef VL_BUILD_DLL
#define VL_EXPORT __declspec(dllexport)
#else
#define VL_EXPORT
#endif
#endif
#if defined(VL_COMPILER_GNUC) || \
defined(__DOXYGEN__)
#define VL_INLINE static __inline__
#ifdef VL_BUILD_DLL
#define VL_EXPORT __attribute__((visibility ("default")))
#else
#define VL_EXPORT
#endif
#endif
/** ------------------------------------------------------------------
** @name Atomic data types
** @{
**/
#define VL_TRUE 1 /**< @brief @c true (1) constant */
#define VL_FALSE 0 /**< @brief @c false (0) constant */
#if defined(VL_COMPILER_LP64) || defined(VL_COMPILER_LLP64)
typedef long long vl_int64 ; /**< @brief Signed 64-bit integer. */
typedef int vl_int32 ; /**< @brief Signed 32-bit integer. */
typedef short vl_int16 ; /**< @brief Signed 16-bit integer. */
typedef char vl_int8 ; /**< @brief Signed 8-bit integer. */
typedef long long unsigned vl_uint64 ; /**< @brief Unsigned 64-bit integer. */
typedef int unsigned vl_uint32 ; /**< @brief Unsigned 32-bit integer. */
typedef short unsigned vl_uint16 ; /**< @brief Unsigned 16-bit integer. */
typedef char unsigned vl_uint8 ; /**< @brief Unsigned 8-bit integer. */
typedef int vl_int ; /**< @brief Same as @c int. */
typedef unsigned int vl_uint ; /**< @brief Same as <code>unsigned int</code>. */
typedef int vl_bool ; /**< @brief Boolean. */
typedef vl_int64 vl_intptr ; /**< @brief Integer holding a pointer. */
typedef vl_uint64 vl_uintptr ; /**< @brief Unsigned integer holding a pointer. */
typedef vl_uint64 vl_size ; /**< @brief Unsigned integer holding the size of a memory block. */
typedef vl_int64 vl_index ; /**< @brief Signed version of ::vl_size and ::vl_uindex */
typedef vl_uint64 vl_uindex ; /**< @brief Same as ::vl_size */
#endif
#if defined(VL_COMPILER_ILP32)
#ifdef VL_COMPILER_MSC
typedef __int64 vl_int64 ;
#else
typedef long long vl_int64 ;
#endif
typedef int vl_int32 ;
typedef short vl_int16 ;
typedef char vl_int8 ;
#ifdef VL_COMPILER_MSC
typedef __int64 unsigned vl_uint64 ;
#else
typedef long long unsigned vl_uint64 ;
#endif
typedef int unsigned vl_uint32 ;
typedef short unsigned vl_uint16 ;
typedef char unsigned vl_uint8 ;
typedef int vl_int ;
typedef unsigned int vl_uint ;
typedef int vl_bool ;
typedef vl_int32 vl_intptr ;
typedef vl_uint32 vl_uintptr ;
typedef vl_uint32 vl_size ;
typedef vl_int32 vl_index ;
typedef vl_uint32 vl_uindex ;
#endif
/** @} */
/** ------------------------------------------------------------------
** @name Printing the atomic data types
** @{ */
/** @def VL_FL_INT64
** @brief @c prinf length flag for ::vl_int64 and ::vl_uint64.
**/
/** @def VL_FL_INT32
** @brief @c prinf length flag for ::vl_int32 and ::vl_uint32.
**/
/** @def VL_FL_INT16
** @brief @c prinf length flag for ::vl_int16 and ::vl_uint16.
**/
/** @def VL_FL_INT8
** @brief @c prinf length flag for ::vl_int8 and ::vl_uint8.
**/
#ifdef VL_COMPILER_MSC
#define VL_FL_INT64 "I64"
#else
#define VL_FL_INT64 "ll"
#endif
#define VL_FL_INT32 ""
#define VL_FL_INT16 "h"
#define VL_FL_INT8 "hh"
/** @} */
/** ------------------------------------------------------------------
** @name Atomic data types limits
** @{ */
/** @brief Largest integer (math constant) */
#define VL_BIG_INT 0x7FFFFFFFL
/** @brief Smallest integer (math constant) */
#define VL_SMALL_INT (- VL_BIG_INT - 1)
/** @brief Largest unsigned integer (math constant) */
#define VL_BIG_UINT 0xFFFFFFFFUL
/** @} */
/** ------------------------------------------------------------------
** @name Endianness detection and conversion
** @{
**/
VL_INLINE void vl_swap_host_big_endianness_8 (void *dst, void* src) ;
VL_INLINE void vl_swap_host_big_endianness_4 (void *dst, void* src) ;
VL_INLINE void vl_swap_host_big_endianness_2 (void *dst, void* src) ;
/** @} */
/** ------------------------------------------------------------------
** @name Obtaining host info at run time
** @{ */
VL_EXPORT void vl_print_host_info() ;
VL_EXPORT vl_bool vl_cpu_has_sse3 () ;
VL_EXPORT vl_bool vl_cpu_has_sse2 () ;
/** @} */
VL_EXPORT void vl_set_simd_enabled (vl_bool x) ;
VL_EXPORT vl_bool vl_get_simd_enabled() ;
/** ------------------------------------------------------------------
** @brief Host <-> big endian transformation for 8-bytes value
**
** @param dst destination 8-byte buffer.
** @param src source 8-byte bufffer.
** @see @ref host-arch-endianness.
**/
VL_INLINE void
vl_swap_host_big_endianness_8 (void *dst, void* src)
{
char *dst_ = (char*) dst ;
char *src_ = (char*) src ;
#if defined(VL_ARCH_BIG_ENDIAN)
dst_ [0] = src_ [0] ;
dst_ [1] = src_ [1] ;
dst_ [2] = src_ [2] ;
dst_ [3] = src_ [3] ;
dst_ [4] = src_ [4] ;
dst_ [5] = src_ [5] ;
dst_ [6] = src_ [6] ;
dst_ [7] = src_ [7] ;
#else
dst_ [0] = src_ [7] ;
dst_ [1] = src_ [6] ;
dst_ [2] = src_ [5] ;
dst_ [3] = src_ [4] ;
dst_ [4] = src_ [3] ;
dst_ [5] = src_ [2] ;
dst_ [6] = src_ [1] ;
dst_ [7] = src_ [0] ;
#endif
}
/** ------------------------------------------------------------------
** @brief Host <-> big endian transformation for 4-bytes value
**
** @param dst destination 4-byte buffer.
** @param src source 4-byte bufffer.
** @sa @ref host-arch-endianness.
**/
VL_INLINE void
vl_swap_host_big_endianness_4 (void *dst, void* src)
{
char *dst_ = (char*) dst ;
char *src_ = (char*) src ;
#if defined(VL_ARCH_BIG_ENDIAN)
dst_ [0] = src_ [0] ;
dst_ [1] = src_ [1] ;
dst_ [2] = src_ [2] ;
dst_ [3] = src_ [3] ;
#else
dst_ [0] = src_ [3] ;
dst_ [1] = src_ [2] ;
dst_ [2] = src_ [1] ;
dst_ [3] = src_ [0] ;
#endif
}
/** ------------------------------------------------------------------
** @brief Host <-> big endian transformation for 2-bytes value
**
** @param dst destination 2-byte buffer.
** @param src source 2-byte bufffer.
** @see @ref host-arch-endianness.
**/
VL_INLINE void
vl_swap_host_big_endianness_2 (void *dst, void* src)
{
char *dst_ = (char*) dst ;
char *src_ = (char*) src ;
#if defined(VL_ARCH_BIG_ENDIAN)
dst_ [0] = src_ [0] ;
dst_ [1] = src_ [1] ;
#else
dst_ [0] = src_ [1] ;
dst_ [1] = src_ [0] ;
#endif
}
/* VL_HOST_H */
#endif
|