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My vote is NO. I would vote YES if in Table 4.1 under Basic operations after fma(x,y,z) the dot product of two vectors would be added. The dot product brings speed and accuracy to interval arithmetic. Both are essential for acceptance and success of interval methods. Please do not answer that this is not possible by formal reasons. If this would be so another way must be found, possibly by a revision of the standard now and not in ten years. Ulrich Kulisch -- Karlsruher Institut für Technologie (KIT) Institut für Angewandte und Numerische Mathematik D-76128 Karlsruhe, Germany Prof. Ulrich Kulisch KIT Distinguished Senior Fellow Telefon: +49 721 608-42680 Fax: +49 721 608-46679 E-Mail: ulrich.kulisch@xxxxxxx www.kit.edu www.math.kit.edu/ianm2/~kulisch/ KIT - Universität des Landes Baden-Württemberg und nationales Großforschungszentrum in der Helmholtz-Gesellschaft |