# WAPR

Algorithm 743: WAPR: a FORTRAN routine for calculating real values of the W-function. We implement the W-function approximation scheme described by the authors [ibid. 21, No. 2, 161--171 (1995; reviewed above) brack. A range of tests of the approximations is included so that the code can be assessed on any given machine. Users can calculate $W(x)$ by specifying $x$ itself or by specifying an offset from $-exp(-1)$, the latter option necessitated by rounding errors that can arise for $x$ close to $-exp(-1)$. Results of running the code on a SUN workstation are included. (Source: http://dl.acm.org/)

This software is also peer reviewed by journal TOMS.

## References in zbMATH (referenced in 13 articles , 1 standard article )

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