log()

Calculates the natural logarithm (the base-e logarithm) of a number. This function expects the values greater than 0.0.

• void setup() {
   int i = 12;
   println(log(i));
   println(log10(i));
  }
  
  // Calculates the base-10 logarithm of a number
  float log10 (int x) {
   return (log(x) / log(10));
  }
  

• log(n)

• n(float)number greater than 0.0

• float