Found a 64bit double implementation library, but I cannot compile it

Projects Programming
16 
#include "BigNumber.h"

void setup(){
  Serial.begin(115200);
  delay(2000);
  BigNumber::begin ();
  BigNumber::setScale (20);
}

int i=1;
unsigned long time;
void loop()
{
  Serial.println( i );
  
  Serial.print( sin(i) );
  Serial.print(" ");
  printBignum( sine( i, precision ) );
  Serial.println();
  
  Serial.print( cos(i) );
  Serial.print(" ");
  printBignum( cosine( i, precision ) );
  Serial.println();
  Serial.println();
  delay(1000);
  i++;
}

// function to display a big number and free it afterwards
void printBignum (BigNumber n)
{
  char * s = n.toString ();
  Serial.print (s);
  free (s);
}  // end of printBignum

work until -15 <= i <= 15..

using a precision of 10 the range is -7 <= i <= 7

i tryed to change
while (p > 0)

into

while (p > 0.00001)

but nothing to do. I'm having some problem with my ADSL, so it's pretty hard to find alternative algorithm, i hope my adsl will feel better tomorrow :grin: