Mercurial > sdl-ios-xcode
view include/SDL_cpuinfo.h @ 5187:d976b67150c5
Restored SDL_BLENDMODE_MOD for MAME
author | Sam Lantinga <slouken@libsdl.org> |
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date | Fri, 04 Feb 2011 19:50:56 -0800 |
parents | b3f075368b1f |
children | 6a65c1fc07af |
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/* SDL - Simple DirectMedia Layer Copyright (C) 1997-2010 Sam Lantinga 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 2.1 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA Sam Lantinga slouken@libsdl.org */ /** * \file SDL_cpuinfo.h * * CPU feature detection for SDL. */ #ifndef _SDL_cpuinfo_h #define _SDL_cpuinfo_h #include "SDL_stdinc.h" #include "begin_code.h" /* Set up for C function definitions, even when using C++ */ #ifdef __cplusplus /* *INDENT-OFF* */ extern "C" { /* *INDENT-ON* */ #endif /* This is a guess for the cacheline size used for padding. * Most x86 processors have a 64 byte cache line. * The 64-bit PowerPC processors have a 128 byte cache line. * We'll use the larger value to be generally safe. */ #define SDL_CACHELINE_SIZE 128 /** * This function returns the number of CPU cores available. */ extern DECLSPEC int SDLCALL SDL_GetCPUCount(void); /** * This function returns the L1 cache line size of the CPU * * This is useful for determining multi-threaded structure padding * or SIMD prefetch sizes. */ extern DECLSPEC int SDLCALL SDL_GetCPUCacheLineSize(void); /** * This function returns true if the CPU has the RDTSC instruction. */ extern DECLSPEC SDL_bool SDLCALL SDL_HasRDTSC(void); /** * This function returns true if the CPU has MMX features. */ extern DECLSPEC SDL_bool SDLCALL SDL_HasMMX(void); /** * This function returns true if the CPU has MMX Ext.\ features. */ extern DECLSPEC SDL_bool SDLCALL SDL_HasMMXExt(void); /** * This function returns true if the CPU has 3DNow!\ features. */ extern DECLSPEC SDL_bool SDLCALL SDL_Has3DNow(void); /** * This function returns true if the CPU has 3DNow!\ Ext.\ features. */ extern DECLSPEC SDL_bool SDLCALL SDL_Has3DNowExt(void); /** * This function returns true if the CPU has SSE features. */ extern DECLSPEC SDL_bool SDLCALL SDL_HasSSE(void); /** * This function returns true if the CPU has SSE2 features. */ extern DECLSPEC SDL_bool SDLCALL SDL_HasSSE2(void); /** * This function returns true if the CPU has AltiVec features. */ extern DECLSPEC SDL_bool SDLCALL SDL_HasAltiVec(void); /* Ends C function definitions when using C++ */ #ifdef __cplusplus /* *INDENT-OFF* */ } /* *INDENT-ON* */ #endif #include "close_code.h" #endif /* _SDL_cpuinfo_h */ /* vi: set ts=4 sw=4 expandtab: */