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// 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 PXFOUNDATION_PXUNIXINTRINSICS_H
#define PXFOUNDATION_PXUNIXINTRINSICS_H
#include "foundation/PxAssert.h"
#if !(PX_LINUX || PX_APPLE_FAMILY)
#error "This file should only be included by Unix builds!!"
#endif
#if PX_LINUX && !PX_CUDA_COMPILER && !PX_EMSCRIPTEN
// Linux and CUDA compilation does not work with std::isfnite, as it is not marked as CUDA callable
#include <cmath>
#ifndef isfinite
using std::isfinite;
#endif
#endif
#include <math.h>
#include <float.h>
#if !PX_DOXYGEN
namespace physx
{
#endif
namespace intrinsics
{
//! \brief platform-specific absolute value
PX_CUDA_CALLABLE PX_FORCE_INLINE float abs(float a)
{
return ::fabsf(a);
}
//! \brief platform-specific select float
PX_CUDA_CALLABLE PX_FORCE_INLINE float fsel(float a, float b, float c)
{
return (a >= 0.0f) ? b : c;
}
//! \brief platform-specific sign
PX_CUDA_CALLABLE PX_FORCE_INLINE float sign(float a)
{
return (a >= 0.0f) ? 1.0f : -1.0f;
}
//! \brief platform-specific reciprocal
PX_CUDA_CALLABLE PX_FORCE_INLINE float recip(float a)
{
return 1.0f / a;
}
//! \brief platform-specific reciprocal estimate
PX_CUDA_CALLABLE PX_FORCE_INLINE float recipFast(float a)
{
return 1.0f / a;
}
//! \brief platform-specific square root
PX_CUDA_CALLABLE PX_FORCE_INLINE float sqrt(float a)
{
return ::sqrtf(a);
}
//! \brief platform-specific reciprocal square root
PX_CUDA_CALLABLE PX_FORCE_INLINE float recipSqrt(float a)
{
return 1.0f / ::sqrtf(a);
}
PX_CUDA_CALLABLE PX_FORCE_INLINE float recipSqrtFast(float a)
{
return 1.0f / ::sqrtf(a);
}
//! \brief platform-specific sine
PX_CUDA_CALLABLE PX_FORCE_INLINE float sin(float a)
{
return ::sinf(a);
}
//! \brief platform-specific cosine
PX_CUDA_CALLABLE PX_FORCE_INLINE float cos(float a)
{
return ::cosf(a);
}
//! \brief platform-specific minimum
PX_CUDA_CALLABLE PX_FORCE_INLINE float selectMin(float a, float b)
{
return a < b ? a : b;
}
//! \brief platform-specific maximum
PX_CUDA_CALLABLE PX_FORCE_INLINE float selectMax(float a, float b)
{
return a > b ? a : b;
}
//! \brief platform-specific finiteness check (not INF or NAN)
PX_CUDA_CALLABLE PX_FORCE_INLINE bool isFinite(float a)
{
//std::isfinite not recommended as of Feb 2017, since it doesn't work with g++/clang's floating point optimization.
union localU { PxU32 i; float f; } floatUnion;
floatUnion.f = a;
return !((floatUnion.i & 0x7fffffff) >= 0x7f800000);
}
//! \brief platform-specific finiteness check (not INF or NAN)
PX_CUDA_CALLABLE PX_FORCE_INLINE bool isFinite(double a)
{
return !!isfinite(a);
}
/*!
Sets \c count bytes starting at \c dst to zero.
*/
PX_FORCE_INLINE void* memZero(void* dest, size_t count)
{
return memset(dest, 0, count);
}
/*!
Sets \c count bytes starting at \c dst to \c c.
*/
PX_FORCE_INLINE void* memSet(void* dest, int32_t c, size_t count)
{
return memset(dest, c, count);
}
/*!
Copies \c count bytes from \c src to \c dst. User memMove if regions overlap.
*/
PX_FORCE_INLINE void* memCopy(void* dest, const void* src, size_t count)
{
return memcpy(dest, src, count);
}
/*!
Copies \c count bytes from \c src to \c dst. Supports overlapping regions.
*/
PX_FORCE_INLINE void* memMove(void* dest, const void* src, size_t count)
{
return memmove(dest, src, count);
}
} // namespace intrinsics
#if !PX_DOXYGEN
} // namespace physx
#endif
#endif