Subject: Re: [Boost-bugs] [Boost C++ Libraries] #8621: erf function gives wrong results with pgcpp - PGI 10.4
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2013-06-03 18:03:00
#8621: erf function gives wrong results with pgcpp - PGI 10.4
---------------------------------------------------------------+------------
Reporter: Jacques Desfosses <jacques.desfosses@â¦> | Owner:
Type: Bugs | Status: new
Milestone: To Be Determined | Component: None
Version: Boost 1.53.0 | Severity: Problem
Resolution: | Keywords: erf pgi
---------------------------------------------------------------+------------
Description changed by viboes:
Old description:
> Hi experts,
>
> I compiled the following code with pgcpp / PGI 10.4 on linux.
>
> /opt/pgi-10.4/linux86/10.4/bin/pgcpp main.cpp -o erf.exe
> -------------------
> #include <math.h>
> #include <boost/math/special_functions/erf.hpp>
> int main()
> {
> double val(1.0);
> printf("BOOST : %-20.15E\n", boost::math::erf(val));
> printf("MATH_H: %-20.15E\n", erf(val));
> }
> -------------------
>
> Output is as follows:
> BOOST : 8.368481544380342E-01
> MATH_H: 8.427007929497149E-01
>
> The value computed by BOOST is incorrect. The same code will give the
> correct value when compiled with VS2012 with Windows 7-64 bits OS.
>
> My linux box is running SUSE Linux Enterprise Desktop 10 SP2 (x86_64)
>
> Can you please help troubleshoot the problem? Other basic statistic
> functions will also return wrong values such as cdf and quantile of
> standard distribution.
>
> Thanks a lot,
>
> Jacques Desfosses
New description:
Hi experts,
I compiled the following code with pgcpp / PGI 10.4 on linux.
/opt/pgi-10.4/linux86/10.4/bin/pgcpp main.cpp -o erf.exe
{{{
#include <math.h>
#include <boost/math/special_functions/erf.hpp>
int main()
{
double val(1.0);
printf("BOOST : %-20.15E\n", boost::math::erf(val));
printf("MATH_H: %-20.15E\n", erf(val));
}
}}}
Output is as follows:
{{{
BOOST : 8.368481544380342E-01
MATH_H: 8.427007929497149E-01
}}}
The value computed by BOOST is incorrect. The same code will give the
correct value when compiled with VS2012 with Windows 7-64 bits OS.
My linux box is running SUSE Linux Enterprise Desktop 10 SP2 (x86_64)
Can you please help troubleshoot the problem? Other basic statistic
functions will also return wrong values such as cdf and quantile of
standard distribution.
Thanks a lot,
Jacques Desfosses
-- -- Ticket URL: <https://svn.boost.org/trac/boost/ticket/8621#comment:1> Boost C++ Libraries <http://www.boost.org/> Boost provides free peer-reviewed portable C++ source libraries.
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