id summary reporter owner description type status milestone component version severity resolution keywords cc 4011 Strange bug may be associated with rounded_transc_opp policy Vitor Vieira Lopes Boris Gubenko "When I evaluate the following expression: a = Interval(1.0, 3.0)[[BR]] exp( a * log(0.001) )[[BR]] I receive the result [nan ~ nan] when I select the rounded_transc_opp policy. However, if I select the rounded_transc_exact all goes well and I receive the expected result: [1E-9 ~ 0.001] If I select the rounded_transc_opp policy and evaluate the expression:[[BR]] exp( a * log(0.0001) ) all works well and I receive the expected result: [1E-12 ~ 0.0001] also works well for:[[BR]] exp( a * log(0.0011) ) but not with:[[BR]] exp( a * log(0.00101) ) I hope that someone can look at this problem, since this is really a very strange situation. Keep up with this excellent work and best regards... Vitor " Bugs new To Be Determined interval Boost 1.38.0 Problem