#ifndef ConstantDefinitions
    #define ConstantDefinitions

    // use "wall-clock" time in windows for now since times() from <sys/times.h>
    // won't work there
    #if defined(_WIN32) || defined(WIN32) || defined(_WIN64) || defined(WIN64)
        #define WALLCLOCK 1
        #define SYS_DELETE "del /Q"
        #define SYS_COPY "copy /Y"
        #define SYS_MKDIR "mkdir"
    #else
        #define WALLCLOCK 0
        #define SYS_DELETE "/bin/rm -rf"
        #define SYS_COPY "/bin/cp -f"
        #define SYS_MKDIR "/bin/mkdir -p"
    #endif

    #define tetraNumBasis 24

    #define YES 1
    #define NO  0
    #define NOT_NUMBERED -1

    #define STRLEN 256
    #define StrLenShort 128
    #define StrOutput 128

    #define ZERO_3 1.e-3
    #define ZERO_4 1.e-4
    #define ZERO_5 1.e-5
    #define ZERO_6 1.e-6
    #define ZERO_7 1.e-7
    #define ZERO_8 1.e-8
    #define ZERO_9 1.e-9
    #define ZERO_10 1.e-10
    #define ZERO_11 1.e-11
    #define ZERO_12 1.e-12
    #define ZERO_13 1.e-13
    #define ZERO_14 1.e-14
    #define ZERO_15 1.e-15

    // for numerical integration of element matrices
    #define triNumGaussPnt 6

    #define SecondOrderNodes 10
    #define SecondOrderTri 6
    
    #define TriNumH1Basis 8
    #define SEC_ORDER_FACE_NODES 6
    #define FIR_ORDER_FACE_NODES 3

    #define NumOfUnitaryVectors 3
    #define NumOfNodes 4
    #define NumOfEdges 6
    #define NumOfFaces 4
    #define NumOfNodesPerFace 3
    #define NumOfEdgesPerFace 3
    #define NumOfTetrasPerFace 2
    #define NumOfFieldComponents 6    //Ex Ey Ez Hx Hy Hz

    #define TypeOfFields 2 //E & H
    #define TensorRow_Col 3
    #define NumCouplingMatrices 3 // Beii, Feij, Beij (number of matrices that need info of their neighbours)

    #define BIGD 1.0e6
    #define MEGA 1.0e6

    #define EulerGamma 0.57721566490153286061
    #define LnEulerGamma -0.54953931298164482234

    #define DecibelsPerNeper 8.685889638065036553
    #define NepersPerDecibel 0.1151292546497022842

    #define MetersPerMil 0.0000254
    #define MilsPerMeter 39370.07874015748

    #define Pi 3.141592653589793239e+00
    #define PiSquared 9.869604401089358619e+00
    #define SqrtPi 1.772453850905516027e+00
    #define LnPi 1.144729885849400174e+00
    #define TwoPi 6.283185307179586477e+00
    #define PiOverTwo 1.570796326794896619e+00
    #define TwoOverPi 6.366197723675813431e-01
    #define PiOverFour 7.853981633974483096e-01

    #define Uo 1.256637061435917239e-06
    #define Eo 8.854187817620390251e-12
    #define Vo 2.997924580000000000e+08
    #define No 3.767303134617706384e+02

    #define Ln10 2.302585092994045684e+00
    #define Ln2 6.931471805599453094e-01
    #define Sqrt2 1.414213562373095049e+00
    #define DegreesPerRadian 5.729577951308232088e+01
    #define RadiansPerDegree 1.745329251994329577e-02

    #define ICC 0
    #define ILDLT 1
    #define ILDLH 2
    #define ILU 3

    #define VTK_DIR "vtk"
    #define VTK_UG_FILE_EXT ".vtu"
    #define VTK_P_UG_FILE_EXT ".pvtu"
    #define VTK_POLY_FILE_EXT ".vtp"
    #define VTK_P_POLY_FILE_EXT ".pvtp"
    #define VISIT_FILE_EXT ".visit"

    // #define Tolerance   1.0e-12
    #define Tolerance 1.0e-07
    #define scaleFact 1.0E+12
    #define scaleFactinv 1.0E-12
    
    #define Protection 0.5e9
    #define MaxThreadsPerBlock 1024
    #define MaxThreadsPerWrap 32

    #define ConformalCase 1
    #define NonConformalCase 0

    #define ClassRelMinCNT 0.1 //minimum % of elements to count as class
    #define ClassMinCNT 1500   //minimum number of elements to count as class

    #define PadeTolerance 0.94
    #define SourceTolerancePade 1.0e-2

    #define NumOfSampleEnergyCheck 10

    #define usageSecurityThresholdFactor 1.1
#endif  /* ConstantDefinitions */