On Formats of the Representation of Real Numbers and Algorithm for Automatic Declaration of Constants of the Computer Real Arithmetic

Article type: Research Article

Authors: Dushanov, E.B.^{a; 1} | Emelianenko, M.G.^b | Konovalova, G.Yu.^c

Affiliations: [a] Institute for Nuclear Physics, Tashkent, Uzbekistan. E-mail: [email protected] | [b] Department of Computational Mathematics and Informatics, Moscow State University, Moscow, Russia | [c] International University of Nature, Society, and Man, Dubna, Russia

Correspondence: [1] The address for manuscript correspondence: E.Dushanov, LIT, JINR Dubna, Moscow region, 141980, Russia. E-mail: [email protected]. Fax: (096-21) 65145. Tel.: (095) 64845.

Abstract: Formats of the representation for any-type numbers in different computers are presented. An algorithm for automatic definition of constants of the computer real arithmetic [1] is developed. Texts of programs on FORTRAN-77 realizing this algorithm as well as those extracting the exponent and mantissa of a real number are described.

Keywords: Algorithm, Bit, Mantissa, Exponent, Error, Program, Digit, Format, Number

DOI: 10.3233/JCM-2002-21-208

Journal: Journal of Computational Methods in Sciences and Engineering, vol. 2, no. 1-2, pp. 57-62, 2002