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#define Power(x, y) (pow(x,(CCTK_REAL) y))
#define Sqrt(x) (sqrt(x))
#ifdef KRANC_C
# define Abs(x) (fabs(x))
# define Min(x, y) (fmin(x,y))
# define Min3(x, y, z) (fmin(fmin((x), (y)), (z)))
# define Max(x, y) (fmax(x,y))
# define IfThen(x,y,z) ((x) ? (y) : (z))
#else
# define Abs(x) (abs(x))
# define Min(x, y) (min(x,y))
# define Max(x, y) (max(x,y))
# define IfThen(x,y,z) ((x)*(y) + (1-(x))*(z))
#endif
#ifdef KRANC_C
# define Sign(x) (copysign(1.0,(x)))
# define ToReal(x) ((CCTK_REAL)(x))
#else
# define Sign(x) (sgn(x))
# define ToReal(x) (real((x),kind(khalf)))
#endif
#define MinMod(x, y) ((x) * (y) < 0 ? 0 : (fabs((x)) < fabs((y)) ? (x) : (y)))
#define VanLeer(x, y) ((x) * (y) < 0 ? 0 : (Min3(2*fabs(x),2*fabs(y),0.5*(fabs(x)+fabs(y)))*Sign((x)+(y))))
#define Exp(x) (exp(x))
#define Log(x) (log(x))
#define Sin(x) (sin(x))
#define Cos(x) (cos(x))
#define Tan(x) (tan(x))
#define ArcSin(x) (asin(x))
#define ArcCos(x) (acos(x))
#define ArcTan(x) (atan(x))
#define ArcTan2(x,y) (atan2(y,x))
#define Sinh(x) (sinh(x))
#define Cosh(x) (cosh(x))
#define Tanh(x) (tanh(x))
#define Csch(x) (1./sinh(x))
#define Sech(x) (1./cosh(x))
#ifdef KRANC_C
# define Sign(x) (copysign(1.0,(x)))
# define ToReal(x) ((CCTK_REAL)(x))
#else
# define Sign(x) (sgn(x))
# define ToReal(x) (real((x),kind(khalf)))
#endif
#ifdef KRANC_C
# define E M_E
# define Pi M_PI
#else
# define E 2.71828182845904523536029d0
# define Pi 3.14159265358979323846264d0
#endif
#define StepFunction(x) ((x)>0)
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