mirror of
https://github.com/TorqueGameEngines/Torque3D.git
synced 2026-01-20 12:44:46 +00:00
128 lines
3.9 KiB
Plaintext
128 lines
3.9 KiB
Plaintext
//-----------------------------------------------------------------------------
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// Copyright (c) 2012 GarageGames, LLC
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to
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// deal in the Software without restriction, including without limitation the
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// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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// sell copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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// IN THE SOFTWARE.
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//-----------------------------------------------------------------------------
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#import "platform/platform.h"
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#import "console/console.h"
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#import "math/mMath.h"
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#import "core/strings/stringFunctions.h"
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#include "console/engineAPI.h"
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extern void mInstallLibrary_C();
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static MRandomLCG sgPlatRandom;
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U32 Platform::getMathControlState()
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{
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#ifdef TORQUE_CPU_X86
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U16 cw;
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asm("fstcw %0" : "=m" (cw) :);
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return cw;
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#else
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return 0;
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#endif
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}
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void Platform::setMathControlState(U32 state)
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{
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#ifdef TORQUE_CPU_X86
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U16 cw = state;
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asm("fldcw %0" : : "m" (cw));
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#endif
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}
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void Platform::setMathControlStateKnown()
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{
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#ifdef TORQUE_CPU_X86
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U16 cw = 0x27F;
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asm("fldcw %0" : : "m" (cw));
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#endif
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}
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//--------------------------------------
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DefineEngineStringlyVariadicFunction( mathInit, void, 1, 10, "( ... )"
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"@brief Install the math library with specified extensions.\n\n"
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"Possible parameters are:\n\n"
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" - 'DETECT' Autodetect math lib settings.\n\n"
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" - 'C' Enable the C math routines. C routines are always enabled.\n\n"
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" - 'SSE' Enable SSE math routines.\n\n"
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"@ingroup Math")
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{
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U32 properties = CPU_PROP_C; // C entensions are always used
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if (argc == 1)
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{
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Math::init(0);
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return;
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}
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for (argc--, argv++; argc; argc--, argv++)
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{
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if (dStricmp(*argv, "DETECT") == 0) {
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Math::init(0);
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return;
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}
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if (dStricmp(*argv, "C") == 0) {
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properties |= CPU_PROP_C;
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continue;
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}
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if( dStricmp( *argv, "SSE" ) == 0 )
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{
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properties |= CPU_PROP_SSE;
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continue;
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}
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//Con::printf("Error: MathInit(): ignoring unknown math extension '%s'", *argv);
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}
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Math::init(properties);
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}
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//------------------------------------------------------------------------------
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void Math::init(U32 properties)
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{
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if (!properties)
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// detect what's available
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properties = Platform::SystemInfo.processor.properties;
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else
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// Make sure we're not asking for anything that's not supported
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properties &= Platform::SystemInfo.processor.properties;
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Con::printf("Math Init:");
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Con::printf(" Installing Standard C extensions");
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mInstallLibrary_C();
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#ifdef TORQUE_CPU_X86
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if( properties & CPU_PROP_SSE )
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{
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Con::printf( " Installing SSE extensions" );
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}
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#endif
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Con::printf(" ");
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}
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//------------------------------------------------------------------------------
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F32 Platform::getRandom()
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{
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return sgPlatRandom.randF();
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}
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