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Re: Optimizing the expint function


From: louis scott
Subject: Re: Optimizing the expint function
Date: Wed, 5 Feb 2014 13:26:05 +0000

SSE optimized exponential. Your binary may not use it. A compile from source, use of MKL non-free math library, or create an oct file that makes use of them from C.  Quick search will find examples.

On 5 Feb 2014 11:09, "Nicanor García" <address@hidden> wrote:

Hello,

I was testing some Speech Enhancement algorithms, one of which used the expint (exponential integral) function and I noticed this function takes ages to compute.

I then tried the same algorithm in MATLAB in the same machine and noticed that the same function takes around 1/10000th of the time it was taking in Octave to compute.

Is there any way to optimize this function so it does work better in Octave?

Thank you very much.

Nicanor García O.

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