Revision control
++ // Copyright (c) 2001-2004 NovodeX AG. All rights reserved.
++ // Copyright (c) 2004-2008 AGEIA Technologies, Inc. All rights reserved.
++ // SPDX-FileCopyrightText: Copyright (c) 2008-2026 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
++ // SPDX-License-Identifier: Apache-2.0
++
++ #ifndef PX_FPU_H
++ #define PX_FPU_H
++
++ #include "foundation/PxSimpleTypes.h"
++ #include "foundation/PxIntrinsics.h"
++ #include "foundation/PxAssert.h"
++ #include "foundation/PxFoundationConfig.h"
++
++ #define PX_IR(x) ((PxU32&)(x)) // integer representation of a floating-point value.
++ #define PX_SIR(x) ((PxI32&)(x)) // signed integer representation of a floating-point value.
++ #define PX_FR(x) ((PxReal&)(x)) // floating-point representation of a integer value.
++
++ #define PX_FPU_GUARD PxFPUGuard scopedFpGuard;
++ #define PX_SIMD_GUARD PxSIMDGuard scopedFpGuard;
++ #define PX_SIMD_GUARD_CNDT(x) PxSIMDGuard scopedFpGuard(x);
++
++ #if !PX_DOXYGEN
++ namespace physx
++ {
++ #endif
++ // sets the default SDK state for scalar and SIMD units
++ class PX_FOUNDATION_API PxFPUGuard
++ {
++ public:
++ PxFPUGuard(); // set fpu control word for PhysX
++ ~PxFPUGuard(); // restore fpu control word
++ private:
++ PxU32 mControlWords[8];
++ };
++
++ // sets default SDK state for simd unit only, lighter weight than FPUGuard
++ class PxSIMDGuard
++ {
++ public:
++ PX_INLINE PxSIMDGuard(bool enable = true); // set simd control word for PhysX
++ PX_INLINE ~PxSIMDGuard(); // restore simd control word
++ private:
++ #if !(PX_LINUX || PX_OSX) || (!PX_EMSCRIPTEN && PX_INTEL_FAMILY)
++ PxU32 mControlWord;
++ bool mEnabled;
++ #endif
++ };
++
++ /**
++ \brief Enables floating point exceptions for the scalar and SIMD unit
++ */
++ PX_FOUNDATION_API void PxEnableFPExceptions();
++
++ /**
++ \brief Disables floating point exceptions for the scalar and SIMD unit
++ */
++ PX_FOUNDATION_API void PxDisableFPExceptions();
++
++ #if !PX_DOXYGEN
++ } // namespace physx
++ #endif
++
++ #if PX_WINDOWS_FAMILY
++ #include "foundation/windows/PxWindowsFPU.h"
++ #elif (PX_LINUX && PX_SSE2) || PX_OSX
++ #include "foundation/unix/PxUnixFPU.h"
++ #else
++ PX_INLINE physx::PxSIMDGuard::PxSIMDGuard(bool)
++ {
++ }
++ PX_INLINE physx::PxSIMDGuard::~PxSIMDGuard()
++ {
++ }
++ #endif
++
++ #endif
++