On 1/12/14, 6:10 AM, Luc Maisonobe wrote: > Le 12/01/2014 14:57, Thomas Neidhart a écrit : >> Hi, >> >> in MATH-1070 we have discovered that calling Precision.round(x, y) >> behaves differently for float and double values when the value to be >> rounded is negative zero: >> >> Precision.round(-0.0d, 0) = 0.0 >> Precision.round(-0.0f, 0) = -0.0 >> >> The reason being that in the double case, the value is converted to a >> BigDecimal, which loses the sign in this case, see >> http://docs.oracle.com/javase/7/docs/api/java/math/BigDecimal.html#BigDecimal%28java.lang.String%29. >> >> I could not find anything related to the IEEE standard for rounding >> numbers for this case. Looking at octave and python, there the sign is >> kept and this would also be a reasonable behavior imho. >> >> Thus I would propose to add a special case for this to the >> Precision.round method. > This sounds reasonable to me.
+1 Phil > > Luc > >> Thomas >> >> --------------------------------------------------------------------- >> To unsubscribe, e-mail: dev-unsubscr...@commons.apache.org >> For additional commands, e-mail: dev-h...@commons.apache.org >> >> >> > > --------------------------------------------------------------------- > To unsubscribe, e-mail: dev-unsubscr...@commons.apache.org > For additional commands, e-mail: dev-h...@commons.apache.org > > --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@commons.apache.org For additional commands, e-mail: dev-h...@commons.apache.org
