JoltPhysics/Jolt/Core/FPFlushDenormals.h

// SPDX-FileCopyrightText: 2021 Jorrit Rouwe
// SPDX-License-Identifier: MIT

#pragma once

#include <Core/FPControlWord.h>

namespace JPH {

#if defined(JPH_USE_SSE)

/// Helper class that needs to be put on the stack to enable flushing denormals to zero
/// This can make floating point operations much faster when working with very small numbers
class FPFlushDenormals : public FPControlWord<_MM_FLUSH_ZERO_ON, _MM_FLUSH_ZERO_MASK> { };

#elif defined(JPH_USE_NEON)

/// Flush denormals to zero bit
static constexpr uint64 FP_FZ = 1 << 24;

/// Helper class that needs to be put on the stack to enable flushing denormals to zero
/// This can make floating point operations much faster when working with very small numbers
class FPFlushDenormals : public FPControlWord<FP_FZ, FP_FZ> { };

#else

#error Unsupported CPU architecture

#endif

} // JPH