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Re: [gpsd-dev] ✘CEP(50) 0.285 metersMime-Version: 1.0


From: Gary E. Miller
Subject: Re: [gpsd-dev] ✘CEP(50) 0.285 metersMime-Version: 1.0
Date: Fri, 22 Jul 2016 17:03:05 -0700

Yo Greg!

On Fri, 22 Jul 2016 19:31:37 -0400
Greg Troxel <address@hidden> wrote:

> long double appears not really that portable.
> 
> http://info.prelert.com/blog/the-pitfalls-of-long-double

Don't care, I just need better than double.
 
> "Gary E. Miller" <address@hidden> writes:
> 
> > We aim to have gpsd run on 32 bit and 64 bit systems.  RasPi's,
> > Odroid's and BBB's currently are 32 bit only.  
> 
> That really shouldn't be an issue.    32-bit CPUs of various kinds
> have implemented both uint64_t and double (the longer of the two
> normal IEEE754 types) for a long time.   The thing to be careful
> about is to use uint64_t if you want a 64-bit type, and not to assume
> that that int, long, or any of the basic C types are particular
> sizes.  This may well interact badly with python that tends to
> provide the native int.

Don't care, the issue is Python.  gpsprof is written in Python.

RGDS
GARY
---------------------------------------------------------------------------
Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703
        address@hidden  Tel:+1 541 382 8588

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