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(Neural Computation. 2000;12:2009-2012.)
© 2000 The MIT Press

Note

On a Fast, Compact Approximation of the Exponential Function

Gavin C. Cawley

University of East Anglia, Norwich, Norfolk NR4 7TJ, England

Recently Schraudolph (1999) described an ingenious, fast, and compact approximation of the exponential function through manipulation of the components of a standard (IEEE-754 (IEEE, 1985)) floating-point representation. This brief note communicates a recoding of this procedure that overcomes some of the limitations of the original macro at little or no additional computational expense.






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