symbolic expressions: machine precision calculation

[Dr. Vassilis S. Vassiliadis]

I wonder if there is a possibility to use within GiNaC the
C++ native precision arithmetic rather than that of CLN.

In particular, following symbolic generation and manipulation of
a mathematical model, it would be desirable in many cases to
switch to machine arithmetic for numerical computations based
on the tree of each constructed expression of interest.

Such a possibility would obviate the need to spool external
C++ source code, to recompile externally from the application
built on GiNaC in the first place, and would lead to usability of
GiNaC in limitless domains where eventual efficient numerical computation
is paramount.

Mathematica, although in a rudimentary and rather cumbersome way,
has this option for example (the so-called compiled version of a function).

Vassilis.


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Dr. Vassilis S. Vassiliadis,
Lecturer,

UNIVERSITY OF CAMBRIDGE,
DEPARTMENT OF CHEMICAL ENGINEERING

Pembroke Street,
Cambridge CB2 3RA, UK.

Tel: (reception): +44 1223 334777
Fax: (departmental): +44 1223 334796

e-mail: vsv20 at cheng.cam.ac.uk

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