FPException.h

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// Jolt Physics Library (https://github.com/jrouwe/JoltPhysics)
// SPDX-FileCopyrightText: 2021 Jorrit Rouwe
// SPDX-License-Identifier: MIT
 
#pragma once
 
#include <Jolt/Core/FPControlWord.h>
 
JPH_NAMESPACE_BEGIN
 
#ifdef JPH_FLOATING_POINT_EXCEPTIONS_ENABLED
 
#if defined(JPH_CPU_WASM)
 
// Not supported
class FPExceptionsEnable { };
class FPExceptionDisableInvalid { };
class FPExceptionDisableDivByZero { };
class FPExceptionDisableOverflow { };
 
#elif defined(JPH_USE_SSE)
 
class FPExceptionsEnable : public FPControlWord<0, _MM_MASK_DIV_ZERO | _MM_MASK_INVALID | _MM_MASK_OVERFLOW> { };
 
class FPExceptionDisableInvalid : public FPControlWord<_MM_MASK_INVALID, _MM_MASK_INVALID> { };
 
class FPExceptionDisableDivByZero : public FPControlWord<_MM_MASK_DIV_ZERO, _MM_MASK_DIV_ZERO> { };
 
class FPExceptionDisableOverflow : public FPControlWord<_MM_MASK_OVERFLOW, _MM_MASK_OVERFLOW> { };
 
#elif defined(JPH_CPU_ARM) && defined(JPH_COMPILER_MSVC)
 
class FPExceptionsEnable : public FPControlWord<0, _EM_INVALID | _EM_ZERODIVIDE | _EM_OVERFLOW> { };
 
class FPExceptionDisableInvalid : public FPControlWord<_EM_INVALID, _EM_INVALID> { };
 
class FPExceptionDisableDivByZero : public FPControlWord<_EM_ZERODIVIDE, _EM_ZERODIVIDE> { };
 
class FPExceptionDisableOverflow : public FPControlWord<_EM_OVERFLOW, _EM_OVERFLOW> { };
 
#elif defined(JPH_CPU_ARM)
 
static constexpr uint64 FP_IOE = 1 << 8;
 
static constexpr uint64 FP_DZE = 1 << 9;
 
static constexpr uint64 FP_OFE = 1 << 10;
 
class FPExceptionsEnable : public FPControlWord<FP_IOE | FP_DZE | FP_OFE, FP_IOE | FP_DZE | FP_OFE> { };
 
class FPExceptionDisableInvalid : public FPControlWord<0, FP_IOE> { };
 
class FPExceptionDisableDivByZero : public FPControlWord<0, FP_DZE> { };
 
class FPExceptionDisableOverflow : public FPControlWord<0, FP_OFE> { };
 
#elif defined(JPH_CPU_RISCV)
 
#error "RISC-V only implements manually checking if exceptions occurred by reading the fcsr register. It doesn't generate exceptions. JPH_FLOATING_POINT_EXCEPTIONS_ENABLED must be disabled."
 
#elif defined(JPH_CPU_PPC)
 
#error PowerPC floating point exception handling to be implemented. JPH_FLOATING_POINT_EXCEPTIONS_ENABLED must be disabled.
 
#else
 
#error Unsupported CPU architecture
 
#endif
 
#else
 
class FPExceptionsEnable { };
class FPExceptionDisableInvalid { };
class FPExceptionDisableDivByZero { };
class FPExceptionDisableOverflow { };
 
#endif
 
JPH_NAMESPACE_END