l_fp, time, calendar

[Gary E. Miller]

Yo Hal!

On Sun, 26 Mar 2017 19:04:22 -0700
Hal Murray <hmurray at megapathdsl.net> wrote:

> gem at rellim.com said:
> >> Isn't that as simple as convert a 64 bit integer to float and
> >> divide by 1<<32 to get the right scale?  
> > Nope.  Loss of precision.  A double only has 52 bits of significant
> > digits. A float only 23.  To fully encode a 64 bit int you need a
> > long double with (usually) 80 significant bits.  
> 
> Is there something I can say in python to get more precision?  How
> widely is it supported?

You can use gmpy or numpy.  Core Python is a bit sloppy on type precision.

Pulling in either once would annoy a lot of minimalists.  OTOH there
are a lot of NUMPY fans.

RGDS
GARY
---------------------------------------------------------------------------
Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703
	gem at rellim.com  Tel:+1 541 382 8588

	    Veritas liberabit vos. -- Quid est veritas?
    "If you can’t measure it, you can’t improve it." - Lord Kelvin
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