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Article Dans Une Revue International Journal of Reliability and Safety Année : 2009

Extended precision with a rounding mode toward zero environment. Application on the CELL processor

Hong Diep Nguyen
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Résumé

In the field of scientific computing, the exactness of the calculation is of prime importance. That leads to efforts made to increase the precision of the floating point algorithms. One of them is to increase the precision of the floating point number to double or quadruple the working precision. The building block of these efforts is the Error-Free Transformations (EFT). In this paper, we develop EFT operations in truncation rounding mode optimised for the Cell processor. They have been implemented and used in double precision library using only single precision numbers. We compare the performance of our library with the native one in double precision on vectors operations. In the best case, the performance of our library is very closed to the standard double precision implementation. The work could be easily extended to obtain quadruple precision.
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Dates et versions

hal-01146513 , version 1 (28-04-2015)

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Hong Diep Nguyen, Stef Graillat, Jean-Luc Lamotte. Extended precision with a rounding mode toward zero environment. Application on the CELL processor. International Journal of Reliability and Safety, 2009, 3 (1-3), pp.153-173. ⟨10.1504/IJRS.2009.026839⟩. ⟨hal-01146513⟩
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