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Quad Precision

The toolkit is moving towards supporting quad-precision (via the __float128 GNU quadmath library), and possibly to higher precision via the GMP library.

Moving to quad precision involves several issues

  • treatment of constants, eg pi, sqrt2, etc need float128 support
  • BLAS/LAPACK library, it looks like a good candidate is MPACK
  • EXPOKIT needs porting to __float128. Or maybe use a different library, see eg http://people.sc.fsu.edu/~jburkardt/f_src/matrix_exponential/matrix_exponential.html
  • ARPACK needs porting to __float128. Probably a big job, but maybe someone has already done it?
  • Handling adjustable parameters, for example eigensolver tolerances, and default values.
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Page last modified on October 16, 2017, at 01:00 AM