function log10( x ) {
	return addon( x );
}
Evaluates the common logarithm (base ten).

@private
@param {NonNegativeNumber} x - input value
@returns {number} function value

@example
var v = log10( 4.0 );
// returns ~0.602

@example
var v = log10( 8.0 );
// returns ~0.903

@example
var v = log10( 0.0 );
// returns -Infinity

@example
var v = log10( Infinity );
// returns Infinity

@example
var v = log10( NaN );
// returns NaN

@example
var v = log10( -4.0 );
// returns NaN