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## Re: [Help-gsl] gsl_sf_beta efficiency question

**From**: |
Brian Gough |

**Subject**: |
Re: [Help-gsl] gsl_sf_beta efficiency question |

**Date**: |
Mon, 22 Jan 2007 14:13:26 +0000 |

**User-agent**: |
Wanderlust/2.14.0 (Africa) Emacs/21.3 Mule/5.0 (SAKAKI) |

At Fri, 19 Jan 2007 18:57:34 +0100,
Helfer Thomas wrote:
>* I measured the CPU time to compute each solution using the rdtsc*
>* assembly function (my processor is an Intel P4).*
>* The results where quite surprising: using the Gamma function*
>* (gsl_sf_gamma) to compute the Beta function seems to be 2x more*
>* efficient than using directly the Beta function (gsl_sf_beta).*
Hello,
The source is in specfunc/beta.c if you want to see the
implementation.
--
Brian Gough
(GSL Maintainer)
Network Theory Ltd,
Publishing the GSL Manual - http://www.network-theory.co.uk/gsl/manual/