arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2002.10220math.NAcs.NA
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利用Infinity计算机体系结构建立动态精度浮点运算

On the use of the Infinity Computer architecture to set up a dynamic precision floating-point arithmetic

Pierluigi Amodio, Luigi Brugnano, Felice Iavernaro, Francesca Mazzia

摘要:

我们利用Infinity计算机提供的框架设计了一个可变精度的浮点运算。这是一个实现无限算术系统的计算平台,这是一个位置数字系统,可以处理由基数Grossone的正负有限次幂表示的无限小和无穷小的量。Infinity Computer提供的计算功能允许我们在计算流程中动态更改表示和浮点运算的精度。当适当地实施时,这种可能性在解决病态问题时变得特别有利。事实上,与标准的多精度算法相比,这里仅在需要时提高精度,因此不会影响整体计算工作量。最后给出了一个求解非线性方程的例子。

英文摘要:

We devise a variable precision floating-point arithmetic by exploiting the framework provided by the Infinity Computer. This is a computational platform implementing the Infinity Arithmetic system, a positional numeral system which can handle both infinite and infinitesimal quantities symbolized by the positive and negative finite powers of the radix grossone. The computational features offered by the Infinity Computer allows us to dynamically change the accuracy of representation and floating-point operations during the flow of a computation. When suitably implemented, this possibility turns out to be particularly advantageous when solving ill-conditioned problems. In fact, compared with a standard multi-precision arithmetic, here the accuracy is improved only when needed, thus not affecting that much the overall computational effort. An illustrative example about the solution of a nonlinear equation is also presented.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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