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//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
// * Neither the name of NVIDIA CORPORATION nor the names of its
// contributors may be used to endorse or promote products derived
// from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
// PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
// OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// Copyright (c) 2008-2018 NVIDIA Corporation. All rights reserved.
// Copyright (c) 2004-2008 AGEIA Technologies, Inc. All rights reserved.
// Copyright (c) 2001-2004 NovodeX AG. All rights reserved.
#ifndef PSFOUNDATION_PSFPU_H
#define PSFOUNDATION_PSFPU_H
#include "Ps.h"
#include "PsIntrinsics.h"
#define PX_IR(x) ((uint32_t&)(x))
#define PX_SIR(x) ((int32_t&)(x))
#define PX_FR(x) ((float&)(x))
// signed integer representation of a floating-point value.
// Floating-point representation of a integer value.
#define PX_SIGN_BITMASK 0x80000000
#define PX_FPU_GUARD shdfnd::FPUGuard scopedFpGuard;
#define PX_SIMD_GUARD shdfnd::SIMDGuard scopedFpGuard;
#define PX_SUPPORT_GUARDS (PX_WINDOWS_FAMILY || PX_XBOXONE || (PX_LINUX && (PX_X86 || PX_X64)) || PX_PS4 || PX_OSX)
namespace physx
{
namespace shdfnd
{
// sets the default SDK state for scalar and SIMD units
class PX_FOUNDATION_API FPUGuard
{
public:
FPUGuard(); // set fpu control word for PhysX
~FPUGuard(); // restore fpu control word
private:
uint32_t mControlWords[8];
};
// sets default SDK state for simd unit only, lighter weight than FPUGuard
class SIMDGuard
{
public:
PX_INLINE SIMDGuard(); // set simd control word for PhysX
PX_INLINE ~SIMDGuard(); // restore simd control word
private:
#if PX_SUPPORT_GUARDS
uint32_t mControlWord;
#endif
};
/**
\brief Enables floating point exceptions for the scalar and SIMD unit
*/
PX_FOUNDATION_API void enableFPExceptions();
/**
\brief Disables floating point exceptions for the scalar and SIMD unit
*/
PX_FOUNDATION_API void disableFPExceptions();
} // namespace shdfnd
} // namespace physx
#if PX_WINDOWS_FAMILY || PX_XBOXONE
#include "windows/PsWindowsFPU.h"
#elif (PX_LINUX && PX_SSE2) || PX_PS4 || PX_OSX
#include "unix/PsUnixFPU.h"
#else
PX_INLINE physx::shdfnd::SIMDGuard::SIMDGuard()
{
}
PX_INLINE physx::shdfnd::SIMDGuard::~SIMDGuard()
{
}
#endif
#endif // #ifndef PSFOUNDATION_PSFPU_H
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