Acta Polytechnica (Jan 2010)

FPU-Supported Running Error Analysis

  • T. Zahradnický,
  • R. Lórencz

Journal volume & issue
Vol. 50, no. 2

Abstract

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A-posteriori forward rounding error analyses tend to give sharper error estimates than a-priori ones, as they use actual data quantities. One of such a-posteriori analysis – running error analysis – uses expressions consisting of two parts; one generates the error and the other propagates input errors to the output. This paper suggests replacing the error generating term with an FPU-extracted rounding error estimate, which produces a sharper error bound.

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