--- Tim Fenn <fenn@xxxxxxxxxxxx> wrote: > On Wed, Apr 26, 2006 at 01:13:56PM -0700, Globe Trotter wrote: > > > > Has anyone used fftw on FC5? I upgraded two weeks ago, and now I get > > FFT's all zeros. I am not sure if I have inadvertently introduced a > > bug in my program somewhere, but I am mystified, where. > > > > So, I thought I would ask if anyone has had problems/no problems > > with fftw on FC5. > > > > I don't know if this is of use, but since I upgraded a library that > uses fftw2, I've had to use -fno-strict-aliasing with gcc 4.1.0 (or > turn down the level of optimization below 1) in order for fftw calls > to work as I'd expect. I don't know if the same is true with fftw3, > however. > > HTH, > Tim > Hi, Thanks! I think you may be right. I switched the option to FFTW_ESTIMATE from FFTW_MEASURE and it worked like a charm. Actually, it appears that FFTW_MEASURE does not work even with RHEL4. I have sent the FFTW developers a note asking them whether that needs to be called any differently. Btw, fftw actually uses fftw3 nowadays. best, Trotter __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com
