UnixPlatformMath.h

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// Copyright Epic Games, Inc. All Rights Reserved.
// IWYU pragma: begin_exports
 
/*=============================================================================================
    LinuxPlatformMath.h: Linux platform Math functions
==============================================================================================*/
 
#pragma once
 
#include "CoreTypes.h"
#include "Clang/ClangPlatformMath.h"
#include "Linux/LinuxSystemIncludes.h"
#include "Math/UnrealPlatformMathSSE4.h"
 
struct FLinuxPlatformMath : public TUnrealPlatformMathSSE4Base<FClangPlatformMath>
{
#if PLATFORM_ENABLE_VECTORINTRINSICS
    static UE_FORCEINLINE_HINT bool IsNaN( float A ) { return isnan(A) != 0; }
    static UE_FORCEINLINE_HINT bool IsNaN( double A ) { return isnan(A) != 0; }
    static UE_FORCEINLINE_HINT bool IsFinite( float A ) { return isfinite(A); }
    static UE_FORCEINLINE_HINT bool IsFinite( double A ) { return isfinite(A); }
 
#if PLATFORM_ENABLE_POPCNT_INTRINSIC
    static UE_FORCEINLINE_HINT int32 CountBits(uint64 Bits)
    {
        return __builtin_popcountll(Bits);
    }
#endif
#endif
};
 
typedef FLinuxPlatformMath FPlatformMath;
 
// IWYU pragma: end_exports