Hi All, I need to sum a large number of extremely small numbers. These small number are a result of an expression that I wrote using R but the sum of these numbers is incorrect because the numbers perhaps get truncated. How van I make sure that R us summing the numbers without rounding or truncating? Your help is appreciated -- View this message in context: http://n4.nabble.com/high-precision-numbers-tp1016860p1016860.html Sent from the R help mailing list archive at Nabble.com.