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Re: [Help-gsl] machine: GSL_SFLT_EPSILON


From: Christian Hill
Subject: Re: [Help-gsl] machine: GSL_SFLT_EPSILON
Date: Wed, 30 Aug 2017 14:16:59 +0100
User-agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.11; rv:45.0) Gecko/20100101 Thunderbird/45.8.0

Dear Jerome,

It's the machine epsilon (https://en.wikipedia.org/wiki/Machine_epsilon)
value for the IEEE 754 "half precision" (16 bit, "short" in C++ speak)
floating point number system, equal to 2^-11.

Christian


On 30/08/2017 13:24, address@hidden wrote:
> Hellol List,
>
> in the header gsl_machine.h , what is the meaning of the constant 
> GSL_SFLT_EPSILON ?
>
> Thanks in advance,
> Jerome
>

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