246 lines
7.1 KiB
C
246 lines
7.1 KiB
C
/*
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* q_stdinc.h - includes the minimum necessary stdc headers,
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* defines common and / or missing types.
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*
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* NOTE: for net stuff use net_sys.h,
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* for byte order use q_endian.h,
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* for math stuff use mathlib.h,
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* for locale-insensitive ctype.h functions use q_ctype.h.
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*
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* Copyright (C) 1996-1997 Id Software, Inc.
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* Copyright (C) 2007-2011 O.Sezer <sezero@users.sourceforge.net>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or (at
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* your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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*
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* See the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef __QSTDINC_H
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#define __QSTDINC_H
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#include <sys/types.h>
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#include <stddef.h>
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#include <limits.h>
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#ifndef _WIN32 /* others we support without sys/param.h? */
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#include <sys/param.h>
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#endif
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#include <stdio.h>
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/* NOTES on TYPE SIZES:
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Quake/Hexen II engine relied on 32 bit int type size
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with ILP32 (not LP32) model in mind. We now support
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LP64 and LLP64, too. We expect:
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sizeof (char) == 1
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sizeof (short) == 2
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sizeof (int) == 4
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sizeof (float) == 4
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sizeof (long) == 4 / 8
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sizeof (pointer *) == 4 / 8
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For this, we need stdint.h (or inttypes.h)
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FIXME: On some platforms, only inttypes.h is available.
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FIXME: Properly replace certain short and int usage
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with int16_t and int32_t.
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*/
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#if defined(_MSC_VER) && (_MSC_VER < 1600)
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/* MS Visual Studio provides stdint.h only starting with
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* version 2010. Even in VS2010, there is no inttypes.h.. */
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#include "msinttypes/stdint.h"
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#else
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#include <stdint.h>
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#endif
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#include <stdlib.h>
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#include <stdarg.h>
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#include <string.h>
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/*==========================================================================*/
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#ifndef NULL
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#if defined(__cplusplus)
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#define NULL 0
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#else
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#define NULL ((void *)0)
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#endif
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#endif
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#define Q_MAXCHAR ((char)0x7f)
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#define Q_MAXSHORT ((short)0x7fff)
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#define Q_MAXINT ((int)0x7fffffff)
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#define Q_MAXLONG ((int)0x7fffffff)
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#define Q_MAXFLOAT ((int)0x7fffffff)
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#define Q_MINCHAR ((char)0x80)
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#define Q_MINSHORT ((short)0x8000)
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#define Q_MININT ((int)0x80000000)
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#define Q_MINLONG ((int)0x80000000)
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#define Q_MINFLOAT ((int)0x7fffffff)
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/* Make sure the types really have the right
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* sizes: These macros are from SDL headers.
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*/
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#define COMPILE_TIME_ASSERT(name, x) \
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typedef int dummy_ ## name[(x) * 2 - 1]
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COMPILE_TIME_ASSERT(char, sizeof(char) == 1);
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COMPILE_TIME_ASSERT(float, sizeof(float) == 4);
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COMPILE_TIME_ASSERT(long, sizeof(long) >= 4);
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COMPILE_TIME_ASSERT(int, sizeof(int) == 4);
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COMPILE_TIME_ASSERT(short, sizeof(short) == 2);
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/* make sure enums are the size of ints for structure packing */
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typedef enum {
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THE_DUMMY_VALUE
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} THE_DUMMY_ENUM;
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COMPILE_TIME_ASSERT(enum, sizeof(THE_DUMMY_ENUM) == sizeof(int));
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/* Provide a substitute for offsetof() if we don't have one.
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* This variant works on most (but not *all*) systems...
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*/
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#ifndef offsetof
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#define offsetof(t,m) ((size_t)&(((t *)0)->m))
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#endif
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/*==========================================================================*/
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typedef unsigned char byte;
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#undef true
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#undef false
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#if defined(__cplusplus)
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/* some structures have qboolean members and the x86 asm code expect
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* those members to be 4 bytes long. therefore, qboolean must be 32
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* bits and it can NOT be binary compatible with the 8 bit C++ bool. */
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typedef int qboolean;
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COMPILE_TIME_ASSERT(falsehood, (0 == false));
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COMPILE_TIME_ASSERT(truth, (1 == true));
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#else
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typedef enum {
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false = 0,
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true = 1
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} qboolean;
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COMPILE_TIME_ASSERT(falsehood, ((1 != 1) == false));
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COMPILE_TIME_ASSERT(truth, ((1 == 1) == true));
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#endif
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COMPILE_TIME_ASSERT(qboolean, sizeof(qboolean) == 4);
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/*==========================================================================*/
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/* math */
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typedef float vec_t;
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typedef vec_t vec3_t[3];
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typedef vec_t vec4_t[4];
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typedef vec_t vec5_t[5];
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typedef int fixed4_t;
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typedef int fixed8_t;
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typedef int fixed16_t;
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/*==========================================================================*/
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/* MAX_OSPATH (max length of a filesystem pathname, i.e. PATH_MAX)
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* Note: See GNU Hurd and others' notes about brokenness of this:
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* http://www.gnu.org/software/hurd/community/gsoc/project_ideas/maxpath.html
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* http://insanecoding.blogspot.com/2007/11/pathmax-simply-isnt.html */
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#if !defined(PATH_MAX)
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/* equivalent values? */
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#if defined(MAXPATHLEN)
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#define PATH_MAX MAXPATHLEN
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#elif defined(_WIN32) && defined(_MAX_PATH)
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#define PATH_MAX _MAX_PATH
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#elif defined(_WIN32) && defined(MAX_PATH)
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#define PATH_MAX MAX_PATH
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#else /* fallback */
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#define PATH_MAX 1024
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#endif
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#endif /* PATH_MAX */
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#define MAX_OSPATH PATH_MAX
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/*==========================================================================*/
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/* missing types */
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#if defined(_MSC_VER)
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#if defined(_WIN64)
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#define ssize_t SSIZE_T
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#else
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typedef int ssize_t;
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#endif /* _WIN64 */
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#endif /* _MSC_VER */
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/*==========================================================================*/
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/* function attributes, etc */
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#if defined(__GNUC__)
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#define FUNC_PRINTF(x,y) __attribute__((__format__(__printf__,x,y)))
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#else
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#define FUNC_PRINTF(x,y)
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#endif
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/* argument format attributes for function pointers are supported for gcc >= 3.1 */
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#if defined(__GNUC__) && (__GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ > 0))
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#define FUNCP_PRINTF FUNC_PRINTF
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#else
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#define FUNCP_PRINTF(x,y)
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#endif
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/* llvm's optnone function attribute started with clang-3.5.0 */
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#if defined(__clang__) && \
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(__clang_major__ > 3 || (__clang_major__ == 3 && __clang_minor__ >= 5))
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#define FUNC_NO_OPTIMIZE __attribute__((__optnone__))
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/* function optimize attribute is added starting with gcc 4.4.0 */
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#elif defined(__GNUC__) && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ > 3))
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#define FUNC_NO_OPTIMIZE __attribute__((__optimize__("0")))
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#else
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#define FUNC_NO_OPTIMIZE
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#endif
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#if defined(__GNUC__)
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#define FUNC_NORETURN __attribute__((__noreturn__))
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#elif defined(_MSC_VER) && (_MSC_VER >= 1200)
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#define FUNC_NORETURN __declspec(noreturn)
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#elif defined(__WATCOMC__)
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#define FUNC_NORETURN /* use the 'aborts' aux pragma */
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#else
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#define FUNC_NORETURN
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#endif
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#if defined(__GNUC__) && ((__GNUC__ > 3) || (__GNUC__ == 3 && __GNUC_MINOR__ >= 1))
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#define FUNC_NOINLINE __attribute__((__noinline__))
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#elif defined(_MSC_VER) && (_MSC_VER >= 1300)
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#define FUNC_NOINLINE __declspec(noinline)
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#else
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#define FUNC_NOINLINE
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#endif
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#if defined(__GNUC__) && ((__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 5))
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#define FUNC_NOCLONE __attribute__((__noclone__))
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#else
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#define FUNC_NOCLONE
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#endif
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#if defined(_MSC_VER) && !defined(__cplusplus)
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#define inline __inline
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#endif /* _MSC_VER */
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/*==========================================================================*/
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#endif /* __QSTDINC_H */
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