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> From: Arnold Neumaier <Arnold.Neumaier@xxxxxxxxxxxx> > Date: Thu, 12 Feb 2009 14:15:10 +0100 > Subject: MidRad to/from InfSup (was: the "set paradigm" is harmful) > > I think the formula that should be in the standard is > set round up > m=l+0.5*(u-l);r=m-l I'd prefer m = 0.5 * (l + u) rather than m = l + 0.5*(u - l) because of 1. Avoiding the loss of significance in performing u-l for narrow intervals 2. One less arithmetic operation. Chenyi Hu