This function returns the base 10 logarithm value of x.
Note: The LabTalk log function is based on 10 while the Origin C log function is based on e. The Origin C base 10 logarithmic function is log10.
double log(double x)
Returns the base 10 logarithm value of x.
aa = log(10);
aa = ; //1
bb = log(20);
bb = ; //1.301029995664