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Re: about QAWF integration -- Fourier integrals
- From: Brian Gough <bjg at network-theory dot co dot uk>
- To: xie qiong <xieq at yahoo dot com>
- Cc: gsl-discuss at sources dot redhat dot com
- Date: Fri, 8 Mar 2002 19:15:01 +0000 (GMT)
- Subject: Re: about QAWF integration -- Fourier integrals
- References: <20020308045501.34518.qmail@web10008.mail.yahoo.com>
xie qiong writes:
> Hello there,
> I have some problem when I tried to use gsl_integration_qawf. I
> can get Fourier transform results for rectangular or normal pdf
> using this routine. But when I changed the integrand to be
> log-normal pdf, core dump happens due to the ERROR: cannot reach
> tolerance because of roundoff error Aborted.
Only a larger tolerance will prevent that. Send a small example program
to the list if you still have problems.
> I have ever tried to make changes to some parameters, such as table
> level n, workspace size and desired tolerance limit, but still
> cannot provent core dump from happening.
> Any solution, help or suggestion would be greatly appreciated.
> Regards, Qiong