Re: Need more precision.

As nobody mentioned this so far, I'll bite on "perl has not and my compiler has" part. Perl by default configures/compiles to "normal" doubles, but it has an option to use long doubles for NV types.

Configure your perl with -Duselongdouble

$ perl -V:uselongdouble\|nvsize
nvsize='16';
uselongdouble='define';
$ perl -MData::Dumper -wE'say Dumper cos 1'
$VAR1 = '0.540302305868139717';
[download]

$ perl5.10.1 -V:uselongdouble\|nvsize
nvsize='8';
uselongdouble='undef';
$ perl5.10.1 -MData::Dumper -wE'say Dumper cos 1'
$VAR1 = '0.54030230586814';
$
[download]

Enjoy, Have FUN! H.Merijn

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Re^2: Need more precision. by syphilis (Archbishop) on Jun 10, 2015 at 06:51 UTC
Configure your perl with -Duselongdouble On Windows, you can build in long double support only with perl-5.22.0 and later ... and even then only if you're using a MinGW port of the gcc compiler. Cheers, Rob	[reply]
Re^2: Need more precision. by BrowserUk (Patriarch) on Jun 10, 2015 at 06:39 UTC
My compiler (MSVC) "supports" the long double type, but "The long double type is identical to the double type." So it does me no good at all. Thanks for the thought though :) With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday' Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error. "Science is about questioning the status quo. Questioning authority". I'm with torvalds on this In the absence of evidence, opinion is indistinguishable from prejudice. Agile (and TDD) debunked	[reply]