sybperl-l Archive

From: michael dot peppler at bnpparibas dot com
Subject: Re: DBD::Sybase 1.07 install on Solaris 8 - failing t/exec.t test #11
Date: Nov 3 2005 12:01PM

I think that that's the problem - with normal double values the 5.4 value
doesn't end up "incorrect"

That being said - float/double values are NOT exact, so what you are seeing
isn't an error, really. It's closer to a test error (i.e. the test should
know better than to make exact comparisons of float/double values).

If it was my server I'd just do the install as it is.

Michael




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earle@isolar.DynDNS.ORG@peppler.org - 03/11/2005 12:21


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Subject:    Re: DBD::Sybase 1.07 install on Solaris 8 - failing t/exec.t
       test #11


On Nov 2, 2005, at 10:21 PM, Michael Peppler wrote:
> On Wed, 2005-11-02 at 15:03 -0800, Greg Earle wrote:
>> I added a
>>
>> print($out[0] - 5.40000000000000035527136788005009);
>>
>> after the
>>
>> print("@out\n");
>>
>> Michael suggested, and, and instead of seeing
>>
>> 5.40000000000000035527136788005009
>> 0
>>
>> as I expected, I get
>>
>> 5.40000000000000035527136788005009
>> 3.08148791101957736488956470813588e-33
>>
>> So it looks like there's no way for me to have an exact match test.
>> (So I commented that test out after all <*grin*>)
>
> Do you have long doubles enabled on your perl?

solaris8:1:42 [/] # /opt/harvestperl/bin/perl5.8.7 -V
Summary of my perl5 (revision 5 version 8 subversion 7) configuration:
   Platform:
     osname=solaris, osvers=2.7, archname=sun4-solaris-thread-multi-ld
     uname='sunos sol7 5.7 generic_106541-20 sun4u sparc sunw,ultraax-mp
'
     config_args=''
     hint=recommended, useposix=true, d_sigaction=define
     usethreads=define use5005threads=undef useithreads=define
usemultiplicity=define
     useperlio=define d_sfio=undef uselargefiles=define usesocks=undef
     use64bitint=undef use64bitall=undef uselongdouble=define
     usemymalloc=n, bincompat5005=undef

[...]

Characteristics of this binary (from libperl):
   Compile-time options: MULTIPLICITY USE_ITHREADS USE_LONG_DOUBLE
                         USE_LARGE_FILES PERL_IMPLICIT_CONTEXT
[...]

Apparently so.  I don't recall explicitly choosing it, but
given that it's Solaris and there's 64-bit support, maybe I thought
it was the "right choice".  Should I rebuild Perl to not use them?

      - Greg



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