NDLI: Optimizing programs over the constructive reals

Content Provider	ACM Digital Library
Author	Lee, Vernon A. Boehm, Hans-J.
Abstract	The constructive reals provide programmers with a useful mechanism for prototyping numerical programs, and for experimenting with numerical algorithms. Unfortunately, the performance of current implementations is inadequate for some potential applications. In particular, these implementations tend to be space inefficient, in that they essentially require a complete computation history to be maintained.Some numerical analysts (cf. [3]) propose that the programmer instead be provided with variable precision interval arithmetic, and then be required to write code to restart a computation when the intervals become too inaccurate. Though this model is no doubt appropriate at times, it is not an adequate replacement for exact arithmetic. The correct transformation from a program operating on the constructive reals to a reasonable program using iterated interval arithmetic can be nontrivial and error prone. Here we present a technique based on program slicing to both automate this process and reduce the amount of reexecution. Thus the programmer is still free to use the simpler abstraction of exact real arithmetic, but we can provide a more efficient interval arithmetic based implementation. Some preliminary empirical results are presented.
Starting Page	102
Ending Page	111
Page Count	10
File Format	PDF
ISSN	03621340 15581160
DOI	10.1145/93548.93558
Journal	ACM SIGPLAN Notices (SIGP)
Volume Number	25
Issue Number	6
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	1983-05-01
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Content Type	Text
Resource Type	Article
Subject	Computer Graphics and Computer-Aided Design Software

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
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3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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