func (g *Glg) Printf(format string, val ...interface{}) error {
	return g.out(PRINT, format, val...)
}
func (g *Glg) Printf(format string, val ...interface{}) error {
	return g.out(PRINT, format, val...)
}
func ( g * Glg ) Printf ( format string , val ... interface { } ) error { return g . out ( PRINT , format , val ... ) }
// Printf outputs formatted Print log
Printf outputs formatted Print log