BRAIN — BaRycentric Approximation for INtegrands (Implementation Issues)
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In this chapter we present BRAIN, an implementation (written in Fortran77) of the BaRycentric Approximation for INtegrands. In chapter III we mainly focused on understanding and properties of the approximation. Below, we concentrate to ease its usage and to illustrate the effort of the computational activities within one iteration of the algorithm stated in section 20. Moreover, that which follows gives also some insight in how to exploit the structural properties of a x-simplex.
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