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/* GLIB - Library of useful routines for C programming
* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/*
* Modified by the GLib Team and others 1997-2000. See the AUTHORS
* file for a list of people on the GLib Team. See the ChangeLog
* files for a list of changes. These files are distributed with
* GLib at ftp://ftp.gtk.org/pub/gtk/.
*/
#ifndef __G_TYPES_H__
#define __G_TYPES_H__
#include <glibconfig.h>
G_BEGIN_DECLS
/* Provide type definitions for commonly used types.
* These are useful because a "gint8" can be adjusted
* to be 1 byte (8 bits) on all platforms. Similarly and
* more importantly, "gint32" can be adjusted to be
* 4 bytes (32 bits) on all platforms.
*/
typedef char gchar;
typedef short gshort;
typedef long glong;
typedef int gint;
typedef gint gboolean;
typedef gchar* gstring;
typedef unsigned char guchar;
typedef unsigned short gushort;
typedef unsigned long gulong;
typedef unsigned int guint;
typedef float gfloat;
typedef double gdouble;
/* HAVE_LONG_DOUBLE doesn't work correctly on all platforms.
* Since gldouble isn't used anywhere, just disable it for now */
#if 0
#ifdef HAVE_LONG_DOUBLE
typedef long double gldouble;
#else /* HAVE_LONG_DOUBLE */
typedef double gldouble;
#endif /* HAVE_LONG_DOUBLE */
#endif /* 0 */
typedef void* gpointer;
typedef const void *gconstpointer;
typedef gint (*GCompareFunc) (gconstpointer a,
gconstpointer b);
typedef gint (*GCompareFuncData) (gconstpointer a,
gconstpointer b,
gpointer user_data);
typedef gboolean (*GEqualFunc) (gconstpointer a,
gconstpointer b);
typedef void (*GDestroyNotify) (gpointer data);
typedef void (*GFunc) (gpointer data,
gpointer user_data);
typedef guint (*GHashFunc) (gconstpointer key);
typedef void (*GHFunc) (gpointer key,
gpointer value,
gpointer user_data);
typedef void (*GFreeFunc) (gpointer data);
/* Define some mathematical constants that aren't available
* symbolically in some strict ISO C implementations.
*/
#define G_E 2.7182818284590452354E0
#define G_LN2 6.9314718055994530942E-1
#define G_LN10 2.3025850929940456840E0
#define G_PI 3.14159265358979323846E0
#define G_PI_2 1.57079632679489661923E0
#define G_PI_4 0.78539816339744830962E0
#define G_SQRT2 1.4142135623730950488E0
/* Portable endian checks and conversions
*
* glibconfig.h defines G_BYTE_ORDER which expands to one of
* the below macros.
*/
#define G_LITTLE_ENDIAN 1234
#define G_BIG_ENDIAN 4321
#define G_PDP_ENDIAN 3412 /* unused, need specific PDP check */
/* Basic bit swapping functions
*/
#define GUINT16_SWAP_LE_BE_CONSTANT(val) ((guint16) ( \
(((guint16) (val) & (guint16) 0x00ffU) << 8) | \
(((guint16) (val) & (guint16) 0xff00U) >> 8)))
#define GUINT32_SWAP_LE_BE_CONSTANT(val) ((guint32) ( \
(((guint32) (val) & (guint32) 0x000000ffU) << 24) | \
(((guint32) (val) & (guint32) 0x0000ff00U) << 8) | \
(((guint32) (val) & (guint32) 0x00ff0000U) >> 8) | \
(((guint32) (val) & (guint32) 0xff000000U) >> 24)))
/* Intel specific stuff for speed
*/
#if defined (__i386__) && defined (__GNUC__) && __GNUC__ >= 2
# define GUINT16_SWAP_LE_BE_X86(val) \
(__extension__ \
({ register guint16 __v; \
if (__builtin_constant_p (val)) \
__v = GUINT16_SWAP_LE_BE_CONSTANT (val); \
else \
__asm__ __const__ ("rorw $8, %w0" \
: "=r" (__v) \
: "0" ((guint16) (val))); \
__v; }))
# define GUINT16_SWAP_LE_BE(val) (GUINT16_SWAP_LE_BE_X86 (val))
# if !defined(__i486__) && !defined(__i586__) \
&& !defined(__pentium__) && !defined(__i686__) && !defined(__pentiumpro__)
# define GUINT32_SWAP_LE_BE_X86(val) \
(__extension__ \
({ register guint32 __v; \
if (__builtin_constant_p (val)) \
__v = GUINT32_SWAP_LE_BE_CONSTANT (val); \
else \
__asm__ __const__ ("rorw $8, %w0\n\t" \
"rorl $16, %0\n\t" \
"rorw $8, %w0" \
: "=r" (__v) \
: "0" ((guint32) (val))); \
__v; }))
# else /* 486 and higher has bswap */
# define GUINT32_SWAP_LE_BE_X86(val) \
(__extension__ \
({ register guint32 __v; \
if (__builtin_constant_p (val)) \
__v = GUINT32_SWAP_LE_BE_CONSTANT (val); \
else \
__asm__ __const__ ("bswap %0" \
: "=r" (__v) \
: "0" ((guint32) (val))); \
__v; }))
# endif /* processor specific 32-bit stuff */
# define GUINT32_SWAP_LE_BE(val) (GUINT32_SWAP_LE_BE_X86 (val))
#else /* !__i386__ */
# define GUINT16_SWAP_LE_BE(val) (GUINT16_SWAP_LE_BE_CONSTANT (val))
# define GUINT32_SWAP_LE_BE(val) (GUINT32_SWAP_LE_BE_CONSTANT (val))
#endif /* __i386__ */
#ifdef G_HAVE_GINT64
# define GUINT64_SWAP_LE_BE_CONSTANT(val) ((guint64) ( \
(((guint64) (val) & \
(guint64) G_GINT64_CONSTANT(0x00000000000000ffU)) << 56) | \
(((guint64) (val) & \
(guint64) G_GINT64_CONSTANT(0x000000000000ff00U)) << 40) | \
(((guint64) (val) & \
(guint64) G_GINT64_CONSTANT(0x0000000000ff0000U)) << 24) | \
(((guint64) (val) & \
(guint64) G_GINT64_CONSTANT(0x00000000ff000000U)) << 8) | \
(((guint64) (val) & \
(guint64) G_GINT64_CONSTANT(0x000000ff00000000U)) >> 8) | \
(((guint64) (val) & \
(guint64) G_GINT64_CONSTANT(0x0000ff0000000000U)) >> 24) | \
(((guint64) (val) & \
(guint64) G_GINT64_CONSTANT(0x00ff000000000000U)) >> 40) | \
(((guint64) (val) & \
(guint64) G_GINT64_CONSTANT(0xff00000000000000U)) >> 56)))
# if defined (__i386__) && defined (__GNUC__) && __GNUC__ >= 2
# define GUINT64_SWAP_LE_BE_X86(val) \
(__extension__ \
({ union { guint64 __ll; \
guint32 __l[2]; } __r; \
if (__builtin_constant_p (val)) \
__r.__ll = GUINT64_SWAP_LE_BE_CONSTANT (val); \
else \
{ \
union { guint64 __ll; \
guint32 __l[2]; } __w; \
__w.__ll = ((guint64) val); \
__r.__l[0] = GUINT32_SWAP_LE_BE (__w.__l[1]); \
__r.__l[1] = GUINT32_SWAP_LE_BE (__w.__l[0]); \
} \
__r.__ll; }))
# define GUINT64_SWAP_LE_BE(val) (GUINT64_SWAP_LE_BE_X86 (val))
# else /* !__i386__ */
# define GUINT64_SWAP_LE_BE(val) (GUINT64_SWAP_LE_BE_CONSTANT(val))
# endif
#endif
#define GUINT16_SWAP_LE_PDP(val) ((guint16) (val))
#define GUINT16_SWAP_BE_PDP(val) (GUINT16_SWAP_LE_BE (val))
#define GUINT32_SWAP_LE_PDP(val) ((guint32) ( \
(((guint32) (val) & (guint32) 0x0000ffffU) << 16) | \
(((guint32) (val) & (guint32) 0xffff0000U) >> 16)))
#define GUINT32_SWAP_BE_PDP(val) ((guint32) ( \
(((guint32) (val) & (guint32) 0x00ff00ffU) << 8) | \
(((guint32) (val) & (guint32) 0xff00ff00U) >> 8)))
/* The G*_TO_?E() macros are defined in glibconfig.h.
* The transformation is symmetric, so the FROM just maps to the TO.
*/
#define GINT16_FROM_LE(val) (GINT16_TO_LE (val))
#define GUINT16_FROM_LE(val) (GUINT16_TO_LE (val))
#define GINT16_FROM_BE(val) (GINT16_TO_BE (val))
#define GUINT16_FROM_BE(val) (GUINT16_TO_BE (val))
#define GINT32_FROM_LE(val) (GINT32_TO_LE (val))
#define GUINT32_FROM_LE(val) (GUINT32_TO_LE (val))
#define GINT32_FROM_BE(val) (GINT32_TO_BE (val))
#define GUINT32_FROM_BE(val) (GUINT32_TO_BE (val))
#ifdef G_HAVE_GINT64
#define GINT64_FROM_LE(val) (GINT64_TO_LE (val))
#define GUINT64_FROM_LE(val) (GUINT64_TO_LE (val))
#define GINT64_FROM_BE(val) (GINT64_TO_BE (val))
#define GUINT64_FROM_BE(val) (GUINT64_TO_BE (val))
#endif
#define GLONG_FROM_LE(val) (GLONG_TO_LE (val))
#define GULONG_FROM_LE(val) (GULONG_TO_LE (val))
#define GLONG_FROM_BE(val) (GLONG_TO_BE (val))
#define GULONG_FROM_BE(val) (GULONG_TO_BE (val))
#define GINT_FROM_LE(val) (GINT_TO_LE (val))
#define GUINT_FROM_LE(val) (GUINT_TO_LE (val))
#define GINT_FROM_BE(val) (GINT_TO_BE (val))
#define GUINT_FROM_BE(val) (GUINT_TO_BE (val))
/* Portable versions of host-network order stuff
*/
#define g_ntohl(val) (GUINT32_FROM_BE (val))
#define g_ntohs(val) (GUINT16_FROM_BE (val))
#define g_htonl(val) (GUINT32_TO_BE (val))
#define g_htons(val) (GUINT16_TO_BE (val))
/* IEEE Standard 754 Single Precision Storage Format (gfloat):
*
* 31 30 23 22 0
* +--------+---------------+---------------+
* | s 1bit | e[30:23] 8bit | f[22:0] 23bit |
* +--------+---------------+---------------+
* B0------------------->B1------->B2-->B3-->
*
* IEEE Standard 754 Double Precision Storage Format (gdouble):
*
* 63 62 52 51 32 31 0
* +--------+----------------+----------------+ +---------------+
* | s 1bit | e[62:52] 11bit | f[51:32] 20bit | | f[31:0] 32bit |
* +--------+----------------+----------------+ +---------------+
* B0--------------->B1---------->B2--->B3----> B4->B5->B6->B7->
*/
/* subtract from biased_exponent to form base2 exponent (normal numbers) */
typedef union _GDoubleIEEE754 GDoubleIEEE754;
typedef union _GFloatIEEE754 GFloatIEEE754;
#define G_IEEE754_FLOAT_BIAS (127)
#define G_IEEE754_DOUBLE_BIAS (1023)
/* multiply with base2 exponent to get base10 exponent (nomal numbers) */
#define G_LOG_2_BASE_10 (0.30102999566398119521)
#if G_BYTE_ORDER == G_LITTLE_ENDIAN
union _GFloatIEEE754
{
gfloat v_float;
struct {
guint mantissa : 23;
guint biased_exponent : 8;
guint sign : 1;
} mpn;
};
union _GDoubleIEEE754
{
gdouble v_double;
struct {
guint mantissa_low : 32;
guint mantissa_high : 20;
guint biased_exponent : 11;
guint sign : 1;
} mpn;
};
#elif G_BYTE_ORDER == G_BIG_ENDIAN
union _GFloatIEEE754
{
gfloat v_float;
struct {
guint sign : 1;
guint biased_exponent : 8;
guint mantissa : 23;
} mpn;
};
union _GDoubleIEEE754
{
gdouble v_double;
struct {
guint sign : 1;
guint biased_exponent : 11;
guint mantissa_high : 20;
guint mantissa_low : 32;
} mpn;
};
#else /* !G_LITTLE_ENDIAN && !G_BIG_ENDIAN */
#error unknown ENDIAN type
#endif /* !G_LITTLE_ENDIAN && !G_BIG_ENDIAN */
typedef struct _GTimeVal GTimeVal;
struct _GTimeVal
{
glong tv_sec;
glong tv_usec;
};
G_END_DECLS
/* We prefix variable declarations so they can
* properly get exported in windows dlls.
*/
#ifdef G_OS_WIN32
# ifdef GLIB_COMPILATION
# define GLIB_VAR __declspec(dllexport)
# else /* !GLIB_COMPILATION */
# define GLIB_VAR extern __declspec(dllimport)
# endif /* !GLIB_COMPILATION */
#else /* !G_OS_WIN32 */
# define GLIB_VAR extern
#endif /* !G_OS_WIN32 */
#endif /* __G_TYPES_H__ */
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