Syntax
#include <math.h>
double log(double x);
float logf(float x);
Arguments
x
Return Value
The natural log of x
Description
Computes the natural log of x using the following formula:
log(x) = 2*((x-1)/(x+1)) + 2/3*((x-1)/(x+1))^3 + (2/(2k+1))((x-1)/(x+1))^(2k+1) (k=0,1,2....) log(2^k * x) = k * log(2) + log(x)