Re: loss of precision in doing file I/O

From:
"Victor Bazarov" <v.Abazarov@comAcast.net>
Newsgroups:
comp.lang.c++
Date:
Fri, 2 Jun 2006 13:10:54 -0400
Message-ID:
<e5prev$lc1$1@news.datemas.de>
Jeff Flinn wrote:

osmium wrote:

"Jeff Flinn" writes:

Write more digits to the output.

I am programming in c++ using visual studio 6 on win2000.


That shoulnd't matter.


Aah, but it does. There have been recent discussions on the boost
mailing list concerning roundtripping doubles/floats to/from text
files with many VC versions losing 1-2 bits precision for certain
numeric values. These have been posted on MS website as bugs, but
have apparently been refuted by MS as a design feature.


Look at the numbers the OP gave! This thread is not about losing a
few bits between friends.


Which is why I responded only to Victor's second point. Victor
addressed the large scale disparity in his first response. Once that
is corrected, the OP and possibly others Googling this thread can be
saved some time in tracking down these finer grain disparities.


I don't understand this. You "addressed" my second point by plucking
it out of context altogether. WTF?

V
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