text: const _TWO_PI = 2 * Math.PI;
  
  function _format00(num){
      var value = (num | 0);
      if(value > 99 || value < 0)
          throw "must be between in range 0-99";
      if(value < 10)
          return "0" + value.toString();
      else
          return value.toString();
  }
  const Maths2 = {
      TWO_PI: _TWO_PI,
      to_radians: (degrees)=> _TWO_PI * degrees / 360,
      to_degrees: (radians)=> 360 * radians/ (_TWO_PI),
      interpolate: (vector1, vector2, fraction)=>{
          var result = [];
          for(var i=0; i< vector1.length; i++){
              var value = vector1[i] + (vector2[i] - vector1[i]) * fraction;
              result.push(value);
          }
          return result;
      },
      format00: (num)=>{
         return _format00(num)
      },
      format000_00: (num)=>{
          var mantissa = (num | 0);
          var mantissa_abs = Math.abs(mantissa);
          var remainder = ((Math.abs(num) - mantissa_abs)*100|0);
          var sign = "-";
          if(num >= 0)
              sign = "+";
          return sign + mantissa_abs.toString() + "." + _format00(remainder);
  
      },
      random_walk: (value,step,max,min)=>{
          if(Math.random()>0.5){
              value -= step;
          } else {
              value += step;
          }
          value = Math.min(value,max);
          value = Math.max(value,min);
          return value;
      }
  }
  module.exports = Maths2;