Development and acceleration of multiple precision arithmetic toolbox MuPAT for Scilab

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概要

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• MuPAT enables the users to easily treat quadruple and octuple precision arithmetics as well as double precision arithmetic on Scilab. Using external C routines, we have also developed a high speed implementation MuPAT_c for Windows, Mac OS, and Linux. MuPAT_c reduced the computation time especially for all octuple precision arithmetic and inner product of quadruple precision arithmetic. MuPAT_c can run 90-1200 times faster than MuPAT. We applied three different precisions to tridiagonalization by the Lanczos method and confirmed that a high precision arithmetic was essential for the Lanczos method to get accurate eigenvalues of real symmetric matrices.

著者

• Saito Tsubasa

  Graduate School Of Engineering Department Of Engineering And Computer Sciences

• Ishiwata Emiko

  Tokyo University of Science

• Kikkawa Satoko

  Graduate School of Science, Tokyo University of Science

• Hasegawa Hidehiko

  University of Tsukuba

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• Development and acceleration of multiple precision arithmetic toolbox MuPAT for Scilab

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