mirror of
https://github.com/beefytech/Beef.git
synced 2025-06-20 00:50:25 +02:00
Inital update
This commit is contained in:
Martin Cietwierkowski
parent
7083739120
commit
6dc1ad22f9
93 changed files with 23961 additions and 8506 deletions
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@ -1,6 +1,6 @@
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/*
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Simple DirectMedia Layer
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Copyright (C) 1997-2019 Sam Lantinga <slouken@libsdl.org>
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Copyright (C) 1997-2023 Sam Lantinga <slouken@libsdl.org>
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This software is provided 'as-is', without any express or implied
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warranty. In no event will the authors be held liable for any damages
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@ -30,6 +30,12 @@
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#include "SDL_config.h"
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#ifdef __APPLE__
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#ifndef _DARWIN_C_SOURCE
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#define _DARWIN_C_SOURCE 1 /* for memset_pattern4() */
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#endif
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#endif
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#ifdef HAVE_SYS_TYPES_H
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#include <sys/types.h>
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#endif
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@ -74,9 +80,9 @@
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# include <ctype.h>
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#endif
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#ifdef HAVE_MATH_H
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# if defined(__WINRT__)
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# if defined(_MSC_VER)
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/* Defining _USE_MATH_DEFINES is required to get M_PI to be defined on
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WinRT. See http://msdn.microsoft.com/en-us/library/4hwaceh6.aspx
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Visual Studio. See http://msdn.microsoft.com/en-us/library/4hwaceh6.aspx
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for more information.
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*/
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# define _USE_MATH_DEFINES
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@ -109,6 +115,23 @@ char *alloca();
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# endif
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#endif
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#ifdef SIZE_MAX
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# define SDL_SIZE_MAX SIZE_MAX
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#else
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# define SDL_SIZE_MAX ((size_t) -1)
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#endif
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/**
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* Check if the compiler supports a given builtin.
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* Supported by virtually all clang versions and recent gcc. Use this
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* instead of checking the clang version if possible.
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*/
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#ifdef __has_builtin
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#define _SDL_HAS_BUILTIN(x) __has_builtin(x)
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#else
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#define _SDL_HAS_BUILTIN(x) 0
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#endif
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/**
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* The number of elements in an array.
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*/
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@ -217,13 +240,26 @@ typedef uint64_t Uint64;
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/* @} *//* Basic data types */
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/* Make sure we have macros for printing 64 bit values.
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/**
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* \name Floating-point constants
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*/
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/* @{ */
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#ifdef FLT_EPSILON
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#define SDL_FLT_EPSILON FLT_EPSILON
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#else
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#define SDL_FLT_EPSILON 1.1920928955078125e-07F /* 0x0.000002p0 */
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#endif
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/* @} *//* Floating-point constants */
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/* Make sure we have macros for printing width-based integers.
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* <stdint.h> should define these but this is not true all platforms.
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* (for example win32) */
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#ifndef SDL_PRIs64
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#ifdef PRIs64
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#define SDL_PRIs64 PRIs64
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#elif defined(__WIN32__)
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#elif defined(__WIN32__) || defined(__GDK__)
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#define SDL_PRIs64 "I64d"
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#elif defined(__LINUX__) && defined(__LP64__)
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#define SDL_PRIs64 "ld"
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@ -234,7 +270,7 @@ typedef uint64_t Uint64;
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#ifndef SDL_PRIu64
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#ifdef PRIu64
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#define SDL_PRIu64 PRIu64
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#elif defined(__WIN32__)
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#elif defined(__WIN32__) || defined(__GDK__)
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#define SDL_PRIu64 "I64u"
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#elif defined(__LINUX__) && defined(__LP64__)
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#define SDL_PRIu64 "lu"
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@ -245,7 +281,7 @@ typedef uint64_t Uint64;
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#ifndef SDL_PRIx64
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#ifdef PRIx64
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#define SDL_PRIx64 PRIx64
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#elif defined(__WIN32__)
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#elif defined(__WIN32__) || defined(__GDK__)
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#define SDL_PRIx64 "I64x"
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#elif defined(__LINUX__) && defined(__LP64__)
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#define SDL_PRIx64 "lx"
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@ -256,7 +292,7 @@ typedef uint64_t Uint64;
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#ifndef SDL_PRIX64
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#ifdef PRIX64
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#define SDL_PRIX64 PRIX64
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#elif defined(__WIN32__)
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#elif defined(__WIN32__) || defined(__GDK__)
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#define SDL_PRIX64 "I64X"
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#elif defined(__LINUX__) && defined(__LP64__)
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#define SDL_PRIX64 "lX"
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@ -264,6 +300,34 @@ typedef uint64_t Uint64;
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#define SDL_PRIX64 "llX"
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#endif
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#endif
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#ifndef SDL_PRIs32
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#ifdef PRId32
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#define SDL_PRIs32 PRId32
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#else
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#define SDL_PRIs32 "d"
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#endif
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#endif
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#ifndef SDL_PRIu32
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#ifdef PRIu32
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#define SDL_PRIu32 PRIu32
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#else
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#define SDL_PRIu32 "u"
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#endif
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#endif
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#ifndef SDL_PRIx32
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#ifdef PRIx32
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#define SDL_PRIx32 PRIx32
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#else
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#define SDL_PRIx32 "x"
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#endif
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#endif
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#ifndef SDL_PRIX32
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#ifdef PRIX32
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#define SDL_PRIX32 PRIX32
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#else
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#define SDL_PRIX32 "X"
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#endif
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#endif
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/* Annotations to help code analysis tools */
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#ifdef SDL_DISABLE_ANALYZE_MACROS
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@ -309,8 +373,22 @@ typedef uint64_t Uint64;
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#endif
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#endif /* SDL_DISABLE_ANALYZE_MACROS */
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#ifndef SDL_COMPILE_TIME_ASSERT
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#if defined(__cplusplus)
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#if (__cplusplus >= 201103L)
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#define SDL_COMPILE_TIME_ASSERT(name, x) static_assert(x, #x)
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#endif
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#elif defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 201112L)
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#define SDL_COMPILE_TIME_ASSERT(name, x) _Static_assert(x, #x)
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#endif
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#endif /* !SDL_COMPILE_TIME_ASSERT */
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#ifndef SDL_COMPILE_TIME_ASSERT
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/* universal, but may trigger -Wunused-local-typedefs */
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#define SDL_COMPILE_TIME_ASSERT(name, x) \
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typedef int SDL_compile_time_assert_ ## name[(x) * 2 - 1]
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#endif
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/** \cond */
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#ifndef DOXYGEN_SHOULD_IGNORE_THIS
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SDL_COMPILE_TIME_ASSERT(uint8, sizeof(Uint8) == 1);
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@ -332,7 +410,7 @@ SDL_COMPILE_TIME_ASSERT(sint64, sizeof(Sint64) == 8);
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/** \cond */
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#ifndef DOXYGEN_SHOULD_IGNORE_THIS
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#if !defined(__ANDROID__)
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#if !defined(__ANDROID__) && !defined(__VITA__) && !defined(__3DS__)
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/* TODO: include/SDL_stdinc.h:174: error: size of array 'SDL_dummy_enum' is negative */
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typedef enum
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{
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@ -369,7 +447,19 @@ typedef void *(SDLCALL *SDL_realloc_func)(void *mem, size_t size);
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typedef void (SDLCALL *SDL_free_func)(void *mem);
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/**
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* \brief Get the current set of SDL memory functions
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* Get the original set of SDL memory functions
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*
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* \since This function is available since SDL 2.24.0.
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*/
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extern DECLSPEC void SDLCALL SDL_GetOriginalMemoryFunctions(SDL_malloc_func *malloc_func,
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SDL_calloc_func *calloc_func,
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SDL_realloc_func *realloc_func,
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SDL_free_func *free_func);
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/**
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* Get the current set of SDL memory functions
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*
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* \since This function is available since SDL 2.0.7.
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*/
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extern DECLSPEC void SDLCALL SDL_GetMemoryFunctions(SDL_malloc_func *malloc_func,
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SDL_calloc_func *calloc_func,
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@ -377,12 +467,9 @@ extern DECLSPEC void SDLCALL SDL_GetMemoryFunctions(SDL_malloc_func *malloc_func
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SDL_free_func *free_func);
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/**
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* \brief Replace SDL's memory allocation functions with a custom set
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* Replace SDL's memory allocation functions with a custom set
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*
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* \note If you are replacing SDL's memory functions, you should call
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* SDL_GetNumAllocations() and be very careful if it returns non-zero.
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* That means that your free function will be called with memory
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* allocated by the previous memory allocation functions.
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* \since This function is available since SDL 2.0.7.
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*/
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extern DECLSPEC int SDLCALL SDL_SetMemoryFunctions(SDL_malloc_func malloc_func,
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SDL_calloc_func calloc_func,
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@ -390,36 +477,60 @@ extern DECLSPEC int SDLCALL SDL_SetMemoryFunctions(SDL_malloc_func malloc_func,
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SDL_free_func free_func);
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/**
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* \brief Get the number of outstanding (unfreed) allocations
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* Get the number of outstanding (unfreed) allocations
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*
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* \since This function is available since SDL 2.0.7.
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*/
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extern DECLSPEC int SDLCALL SDL_GetNumAllocations(void);
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extern DECLSPEC char *SDLCALL SDL_getenv(const char *name);
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extern DECLSPEC int SDLCALL SDL_setenv(const char *name, const char *value, int overwrite);
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extern DECLSPEC void SDLCALL SDL_qsort(void *base, size_t nmemb, size_t size, int (*compare) (const void *, const void *));
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extern DECLSPEC void SDLCALL SDL_qsort(void *base, size_t nmemb, size_t size, int (SDLCALL *compare) (const void *, const void *));
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extern DECLSPEC void * SDLCALL SDL_bsearch(const void *key, const void *base, size_t nmemb, size_t size, int (SDLCALL *compare) (const void *, const void *));
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extern DECLSPEC int SDLCALL SDL_abs(int x);
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/* !!! FIXME: these have side effects. You probably shouldn't use them. */
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/* !!! FIXME: Maybe we do forceinline functions of SDL_mini, SDL_minf, etc? */
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/* NOTE: these double-evaluate their arguments, so you should never have side effects in the parameters */
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#define SDL_min(x, y) (((x) < (y)) ? (x) : (y))
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#define SDL_max(x, y) (((x) > (y)) ? (x) : (y))
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#define SDL_clamp(x, a, b) (((x) < (a)) ? (a) : (((x) > (b)) ? (b) : (x)))
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extern DECLSPEC int SDLCALL SDL_isalpha(int x);
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extern DECLSPEC int SDLCALL SDL_isalnum(int x);
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extern DECLSPEC int SDLCALL SDL_isblank(int x);
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extern DECLSPEC int SDLCALL SDL_iscntrl(int x);
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extern DECLSPEC int SDLCALL SDL_isdigit(int x);
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extern DECLSPEC int SDLCALL SDL_isxdigit(int x);
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extern DECLSPEC int SDLCALL SDL_ispunct(int x);
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extern DECLSPEC int SDLCALL SDL_isspace(int x);
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extern DECLSPEC int SDLCALL SDL_isupper(int x);
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extern DECLSPEC int SDLCALL SDL_islower(int x);
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extern DECLSPEC int SDLCALL SDL_isprint(int x);
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extern DECLSPEC int SDLCALL SDL_isgraph(int x);
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extern DECLSPEC int SDLCALL SDL_toupper(int x);
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extern DECLSPEC int SDLCALL SDL_tolower(int x);
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extern DECLSPEC Uint16 SDLCALL SDL_crc16(Uint16 crc, const void *data, size_t len);
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extern DECLSPEC Uint32 SDLCALL SDL_crc32(Uint32 crc, const void *data, size_t len);
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extern DECLSPEC void *SDLCALL SDL_memset(SDL_OUT_BYTECAP(len) void *dst, int c, size_t len);
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#define SDL_zero(x) SDL_memset(&(x), 0, sizeof((x)))
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#define SDL_zerop(x) SDL_memset((x), 0, sizeof(*(x)))
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#define SDL_zeroa(x) SDL_memset((x), 0, sizeof((x)))
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#define SDL_copyp(dst, src) \
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{ SDL_COMPILE_TIME_ASSERT(SDL_copyp, sizeof (*(dst)) == sizeof (*(src))); } \
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SDL_memcpy((dst), (src), sizeof (*(src)))
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/* Note that memset() is a byte assignment and this is a 32-bit assignment, so they're not directly equivalent. */
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SDL_FORCE_INLINE void SDL_memset4(void *dst, Uint32 val, size_t dwords)
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{
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#if defined(__GNUC__) && defined(i386)
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#ifdef __APPLE__
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memset_pattern4(dst, &val, dwords * 4);
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#elif defined(__GNUC__) && defined(__i386__)
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int u0, u1, u2;
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__asm__ __volatile__ (
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"cld \n\t"
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@ -432,14 +543,14 @@ SDL_FORCE_INLINE void SDL_memset4(void *dst, Uint32 val, size_t dwords)
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size_t _n = (dwords + 3) / 4;
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Uint32 *_p = SDL_static_cast(Uint32 *, dst);
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Uint32 _val = (val);
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if (dwords == 0)
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if (dwords == 0) {
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return;
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switch (dwords % 4)
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{
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case 0: do { *_p++ = _val; /* fallthrough */
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case 3: *_p++ = _val; /* fallthrough */
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case 2: *_p++ = _val; /* fallthrough */
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case 1: *_p++ = _val; /* fallthrough */
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}
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switch (dwords % 4) {
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case 0: do { *_p++ = _val; SDL_FALLTHROUGH;
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case 3: *_p++ = _val; SDL_FALLTHROUGH;
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case 2: *_p++ = _val; SDL_FALLTHROUGH;
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case 1: *_p++ = _val;
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} while ( --_n );
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}
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#endif
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@ -450,11 +561,16 @@ extern DECLSPEC void *SDLCALL SDL_memcpy(SDL_OUT_BYTECAP(len) void *dst, SDL_IN_
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extern DECLSPEC void *SDLCALL SDL_memmove(SDL_OUT_BYTECAP(len) void *dst, SDL_IN_BYTECAP(len) const void *src, size_t len);
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extern DECLSPEC int SDLCALL SDL_memcmp(const void *s1, const void *s2, size_t len);
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extern DECLSPEC wchar_t *SDLCALL SDL_wcsdup(const wchar_t *wstr);
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extern DECLSPEC size_t SDLCALL SDL_wcslen(const wchar_t *wstr);
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extern DECLSPEC size_t SDLCALL SDL_wcslcpy(SDL_OUT_Z_CAP(maxlen) wchar_t *dst, const wchar_t *src, size_t maxlen);
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extern DECLSPEC size_t SDLCALL SDL_wcslcat(SDL_INOUT_Z_CAP(maxlen) wchar_t *dst, const wchar_t *src, size_t maxlen);
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extern DECLSPEC wchar_t *SDLCALL SDL_wcsdup(const wchar_t *wstr);
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extern DECLSPEC wchar_t *SDLCALL SDL_wcsstr(const wchar_t *haystack, const wchar_t *needle);
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extern DECLSPEC int SDLCALL SDL_wcscmp(const wchar_t *str1, const wchar_t *str2);
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extern DECLSPEC int SDLCALL SDL_wcsncmp(const wchar_t *str1, const wchar_t *str2, size_t maxlen);
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extern DECLSPEC int SDLCALL SDL_wcscasecmp(const wchar_t *str1, const wchar_t *str2);
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extern DECLSPEC int SDLCALL SDL_wcsncasecmp(const wchar_t *str1, const wchar_t *str2, size_t len);
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extern DECLSPEC size_t SDLCALL SDL_strlen(const char *str);
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extern DECLSPEC size_t SDLCALL SDL_strlcpy(SDL_OUT_Z_CAP(maxlen) char *dst, const char *src, size_t maxlen);
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@ -467,7 +583,10 @@ extern DECLSPEC char *SDLCALL SDL_strlwr(char *str);
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extern DECLSPEC char *SDLCALL SDL_strchr(const char *str, int c);
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extern DECLSPEC char *SDLCALL SDL_strrchr(const char *str, int c);
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extern DECLSPEC char *SDLCALL SDL_strstr(const char *haystack, const char *needle);
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extern DECLSPEC char *SDLCALL SDL_strcasestr(const char *haystack, const char *needle);
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extern DECLSPEC char *SDLCALL SDL_strtokr(char *s1, const char *s2, char **saveptr);
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extern DECLSPEC size_t SDLCALL SDL_utf8strlen(const char *str);
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extern DECLSPEC size_t SDLCALL SDL_utf8strnlen(const char *str, size_t bytes);
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extern DECLSPEC char *SDLCALL SDL_itoa(int value, char *str, int radix);
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extern DECLSPEC char *SDLCALL SDL_uitoa(unsigned int value, char *str, int radix);
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|
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@ -493,6 +612,8 @@ extern DECLSPEC int SDLCALL SDL_sscanf(const char *text, SDL_SCANF_FORMAT_STRING
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extern DECLSPEC int SDLCALL SDL_vsscanf(const char *text, const char *fmt, va_list ap);
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extern DECLSPEC int SDLCALL SDL_snprintf(SDL_OUT_Z_CAP(maxlen) char *text, size_t maxlen, SDL_PRINTF_FORMAT_STRING const char *fmt, ... ) SDL_PRINTF_VARARG_FUNC(3);
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||||
extern DECLSPEC int SDLCALL SDL_vsnprintf(SDL_OUT_Z_CAP(maxlen) char *text, size_t maxlen, const char *fmt, va_list ap);
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||||
extern DECLSPEC int SDLCALL SDL_asprintf(char **strp, SDL_PRINTF_FORMAT_STRING const char *fmt, ...) SDL_PRINTF_VARARG_FUNC(2);
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extern DECLSPEC int SDLCALL SDL_vasprintf(char **strp, const char *fmt, va_list ap);
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|
||||
#ifndef HAVE_M_PI
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#ifndef M_PI
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||||
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@ -500,14 +621,28 @@ extern DECLSPEC int SDLCALL SDL_vsnprintf(SDL_OUT_Z_CAP(maxlen) char *text, size
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#endif
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||||
#endif
|
||||
|
||||
/**
|
||||
* Use this function to compute arc cosine of `x`.
|
||||
*
|
||||
* The definition of `y = acos(x)` is `x = cos(y)`.
|
||||
*
|
||||
* Domain: `-1 <= x <= 1`
|
||||
*
|
||||
* Range: `0 <= y <= Pi`
|
||||
*
|
||||
* \param x floating point value, in radians.
|
||||
* \returns arc cosine of `x`.
|
||||
*
|
||||
* \since This function is available since SDL 2.0.2.
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||||
*/
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||||
extern DECLSPEC double SDLCALL SDL_acos(double x);
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||||
extern DECLSPEC float SDLCALL SDL_acosf(float x);
|
||||
extern DECLSPEC double SDLCALL SDL_asin(double x);
|
||||
extern DECLSPEC float SDLCALL SDL_asinf(float x);
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||||
extern DECLSPEC double SDLCALL SDL_atan(double x);
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||||
extern DECLSPEC float SDLCALL SDL_atanf(float x);
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||||
extern DECLSPEC double SDLCALL SDL_atan2(double x, double y);
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||||
extern DECLSPEC float SDLCALL SDL_atan2f(float x, float y);
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||||
extern DECLSPEC double SDLCALL SDL_atan2(double y, double x);
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||||
extern DECLSPEC float SDLCALL SDL_atan2f(float y, float x);
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extern DECLSPEC double SDLCALL SDL_ceil(double x);
|
||||
extern DECLSPEC float SDLCALL SDL_ceilf(float x);
|
||||
extern DECLSPEC double SDLCALL SDL_copysign(double x, double y);
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||||
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@ -520,6 +655,8 @@ extern DECLSPEC double SDLCALL SDL_fabs(double x);
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extern DECLSPEC float SDLCALL SDL_fabsf(float x);
|
||||
extern DECLSPEC double SDLCALL SDL_floor(double x);
|
||||
extern DECLSPEC float SDLCALL SDL_floorf(float x);
|
||||
extern DECLSPEC double SDLCALL SDL_trunc(double x);
|
||||
extern DECLSPEC float SDLCALL SDL_truncf(float x);
|
||||
extern DECLSPEC double SDLCALL SDL_fmod(double x, double y);
|
||||
extern DECLSPEC float SDLCALL SDL_fmodf(float x, float y);
|
||||
extern DECLSPEC double SDLCALL SDL_log(double x);
|
||||
|
|
@ -528,6 +665,10 @@ extern DECLSPEC double SDLCALL SDL_log10(double x);
|
|||
extern DECLSPEC float SDLCALL SDL_log10f(float x);
|
||||
extern DECLSPEC double SDLCALL SDL_pow(double x, double y);
|
||||
extern DECLSPEC float SDLCALL SDL_powf(float x, float y);
|
||||
extern DECLSPEC double SDLCALL SDL_round(double x);
|
||||
extern DECLSPEC float SDLCALL SDL_roundf(float x);
|
||||
extern DECLSPEC long SDLCALL SDL_lround(double x);
|
||||
extern DECLSPEC long SDLCALL SDL_lroundf(float x);
|
||||
extern DECLSPEC double SDLCALL SDL_scalbn(double x, int n);
|
||||
extern DECLSPEC float SDLCALL SDL_scalbnf(float x, int n);
|
||||
extern DECLSPEC double SDLCALL SDL_sin(double x);
|
||||
|
|
@ -551,9 +692,12 @@ extern DECLSPEC int SDLCALL SDL_iconv_close(SDL_iconv_t cd);
|
|||
extern DECLSPEC size_t SDLCALL SDL_iconv(SDL_iconv_t cd, const char **inbuf,
|
||||
size_t * inbytesleft, char **outbuf,
|
||||
size_t * outbytesleft);
|
||||
|
||||
/**
|
||||
* This function converts a string between encodings in one pass, returning a
|
||||
* string that must be freed with SDL_free() or NULL on error.
|
||||
* This function converts a string between encodings in one pass, returning a
|
||||
* string that must be freed with SDL_free() or NULL on error.
|
||||
*
|
||||
* \since This function is available since SDL 2.0.0.
|
||||
*/
|
||||
extern DECLSPEC char *SDLCALL SDL_iconv_string(const char *tocode,
|
||||
const char *fromcode,
|
||||
|
|
@ -562,10 +706,22 @@ extern DECLSPEC char *SDLCALL SDL_iconv_string(const char *tocode,
|
|||
#define SDL_iconv_utf8_locale(S) SDL_iconv_string("", "UTF-8", S, SDL_strlen(S)+1)
|
||||
#define SDL_iconv_utf8_ucs2(S) (Uint16 *)SDL_iconv_string("UCS-2-INTERNAL", "UTF-8", S, SDL_strlen(S)+1)
|
||||
#define SDL_iconv_utf8_ucs4(S) (Uint32 *)SDL_iconv_string("UCS-4-INTERNAL", "UTF-8", S, SDL_strlen(S)+1)
|
||||
#define SDL_iconv_wchar_utf8(S) SDL_iconv_string("UTF-8", "WCHAR_T", (char *)S, (SDL_wcslen(S)+1)*sizeof(wchar_t))
|
||||
|
||||
/* force builds using Clang's static analysis tools to use literal C runtime
|
||||
here, since there are possibly tests that are ineffective otherwise. */
|
||||
#if defined(__clang_analyzer__) && !defined(SDL_DISABLE_ANALYZE_MACROS)
|
||||
|
||||
/* The analyzer knows about strlcpy even when the system doesn't provide it */
|
||||
#ifndef HAVE_STRLCPY
|
||||
size_t strlcpy(char* dst, const char* src, size_t size);
|
||||
#endif
|
||||
|
||||
/* The analyzer knows about strlcat even when the system doesn't provide it */
|
||||
#ifndef HAVE_STRLCAT
|
||||
size_t strlcat(char* dst, const char* src, size_t size);
|
||||
#endif
|
||||
|
||||
#define SDL_malloc malloc
|
||||
#define SDL_calloc calloc
|
||||
#define SDL_realloc realloc
|
||||
|
|
@ -574,15 +730,23 @@ extern DECLSPEC char *SDLCALL SDL_iconv_string(const char *tocode,
|
|||
#define SDL_memcpy memcpy
|
||||
#define SDL_memmove memmove
|
||||
#define SDL_memcmp memcmp
|
||||
#define SDL_strlen strlen
|
||||
#define SDL_strlcpy strlcpy
|
||||
#define SDL_strlcat strlcat
|
||||
#define SDL_strlen strlen
|
||||
#define SDL_wcslen wcslen
|
||||
#define SDL_wcslcpy wcslcpy
|
||||
#define SDL_wcslcat wcslcat
|
||||
#define SDL_strdup strdup
|
||||
#define SDL_wcsdup wcsdup
|
||||
#define SDL_strchr strchr
|
||||
#define SDL_strrchr strrchr
|
||||
#define SDL_strstr strstr
|
||||
#define SDL_wcsstr wcsstr
|
||||
#define SDL_strtokr strtok_r
|
||||
#define SDL_strcmp strcmp
|
||||
#define SDL_wcscmp wcscmp
|
||||
#define SDL_strncmp strncmp
|
||||
#define SDL_wcsncmp wcsncmp
|
||||
#define SDL_strcasecmp strcasecmp
|
||||
#define SDL_strncasecmp strncasecmp
|
||||
#define SDL_sscanf sscanf
|
||||
|
|
@ -596,6 +760,65 @@ SDL_FORCE_INLINE void *SDL_memcpy4(SDL_OUT_BYTECAP(dwords*4) void *dst, SDL_IN_B
|
|||
return SDL_memcpy(dst, src, dwords * 4);
|
||||
}
|
||||
|
||||
/**
|
||||
* If a * b would overflow, return -1. Otherwise store a * b via ret
|
||||
* and return 0.
|
||||
*
|
||||
* \since This function is available since SDL 2.24.0.
|
||||
*/
|
||||
SDL_FORCE_INLINE int SDL_size_mul_overflow (size_t a,
|
||||
size_t b,
|
||||
size_t *ret)
|
||||
{
|
||||
if (a != 0 && b > SDL_SIZE_MAX / a) {
|
||||
return -1;
|
||||
}
|
||||
*ret = a * b;
|
||||
return 0;
|
||||
}
|
||||
|
||||
#if _SDL_HAS_BUILTIN(__builtin_mul_overflow)
|
||||
/* This needs to be wrapped in an inline rather than being a direct #define,
|
||||
* because __builtin_mul_overflow() is type-generic, but we want to be
|
||||
* consistent about interpreting a and b as size_t. */
|
||||
SDL_FORCE_INLINE int _SDL_size_mul_overflow_builtin (size_t a,
|
||||
size_t b,
|
||||
size_t *ret)
|
||||
{
|
||||
return __builtin_mul_overflow(a, b, ret) == 0 ? 0 : -1;
|
||||
}
|
||||
#define SDL_size_mul_overflow(a, b, ret) (_SDL_size_mul_overflow_builtin(a, b, ret))
|
||||
#endif
|
||||
|
||||
/**
|
||||
* If a + b would overflow, return -1. Otherwise store a + b via ret
|
||||
* and return 0.
|
||||
*
|
||||
* \since This function is available since SDL 2.24.0.
|
||||
*/
|
||||
SDL_FORCE_INLINE int SDL_size_add_overflow (size_t a,
|
||||
size_t b,
|
||||
size_t *ret)
|
||||
{
|
||||
if (b > SDL_SIZE_MAX - a) {
|
||||
return -1;
|
||||
}
|
||||
*ret = a + b;
|
||||
return 0;
|
||||
}
|
||||
|
||||
#if _SDL_HAS_BUILTIN(__builtin_add_overflow)
|
||||
/* This needs to be wrapped in an inline rather than being a direct #define,
|
||||
* the same as the call to __builtin_mul_overflow() above. */
|
||||
SDL_FORCE_INLINE int _SDL_size_add_overflow_builtin (size_t a,
|
||||
size_t b,
|
||||
size_t *ret)
|
||||
{
|
||||
return __builtin_add_overflow(a, b, ret) == 0 ? 0 : -1;
|
||||
}
|
||||
#define SDL_size_add_overflow(a, b, ret) (_SDL_size_add_overflow_builtin(a, b, ret))
|
||||
#endif
|
||||
|
||||
/* Ends C function definitions when using C++ */
|
||||
#ifdef __cplusplus
|
||||
}
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue