Calculate the logarithm of the specified argument.
n - the value (converted to a double) to apply this function to.
base - the base to use, if no base is specified, then the natural logarithm of n is calculated.
A double scalar.
sub log10 { return log($1) / log(10); } println("log10(2): " . log10(2)); println("log10(3): " . log10(3)); println("log10(5): " . log10(5));
log10(2): 0.30102999566398114 log10(3): 0.4771212547196623 log10(5): 0.6989700043360187