long   HexDigit(long,long);
long   HexPower(long);
void   HexCoord(long,double *,double *);
long   HexAdd(long,long,long);
long   HexAdd_b7(long,long,long);
long   HexMul(long,long,long);
long   HexMul_b7(long,long,long);
long   HexShift(long,int,int,long);
long   Hex2Dec(long);
long   Dec2Hex(long);
long   HexEven(long);
long   HexLeft(long);
long   HexReflect(long,long,int);
long   HexMagnitude(long);
double HexDistance(long,long);
double HexAngle(long,long);
long   HexInverse(long,long,long);
long   HexSqrt(long,long,long);
long   HexComplexPower(long,double,long);
long   CoordHex(double,double,long);