/* HEADER TO MY_MATHS 
 * PETER BLACK
 *26 OCT 1997
 */
 
 #ifndef MY_MATHS
 #define MY_MATHS
 
 /* 
  * SIN AND COSIN FUNCTION LOOK UP TABLE METHOD
  * IN DEGREES 90 DEGREES RETURNS 1
  * RESOLUTION 360 FOR FULL CIRCLE
  */
  //DATA ARRAY SIN
  extern short sin_data[361];
  //DATA ARRAY COS
  extern short cos_data[361];
  //SIN
  extern short SinFunc(short a);
  //COSIN
  extern short CosFunc(short a);
  // ABS    
  extern short AbsFunc(short a);
  // SGN  retuns -1 ,0 or 1
  extern short SgnFunc(short a);
  
  #endif