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The Computer Journal 1979 22(4):317-322; doi:10.1093/comjnl/22.4.317
© 1979 by British Computer Society
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A program to calculate the GAMM measure

B. A. Wichmann1 and J. Du Croz2 *

1 Computing Services Unit, National Physical Laboratory, Teddington, UK, 2 Numerical Algorithms Group, Oxford, UK

A FORTRAN program is given whose execution time is proportional to the GAMM measure of computer performance. An error analysis is given of the floating point calculation in the program. This analysis permits the program to be used as a confidence check on the accuracy of the floating point facilities of the computer.

Received December 1978.

* Numerical Algorithms Group, Oxford

§ Computing Services Unit, National Physical Laboratory, Teddington, Middlesex TW11 0LW


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