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Re: Double precision random number generator in Fortran 77
Posted:
Nov 17, 2005 10:49 AM
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os2_user@hotmail.com wrote:
>
...top posting repaired...
> > os2_user@hotmail.com wrote:
> >
> > > Hugo Pfoertner wrote:
> > >
> > >>os2_user@hotmail.com wrote:
> > >>
> > >>>What is a good and free double precision random number generator in
> > >>>Fortran 77? Is DUNI from Netlib ok? Is Ranlux available in double
> > >>>precision and is it better? Are there better ones than these two
> > >>>(longer period, pass all tests etc)?
> > >>>
> > >>>Thanks.
> > >>
> > >>Links to several implementations of the Mersenne Twister PRNG written in
> > >>Fortran can be found at
> > >>http://www.math.sci.hiroshima-u.ac.jp/~m-mat/MT/VERSIONS/FORTRAN/fortran.html
> > >
> > >
> > > The Fortran 77 version doesn't compile. There is an illegal data
> > > statement for the variable mti which is in COMMON. It can be fixed by
> > > having a block data statement. Has anyone else noticed this error?
> > >
> paul v birke wrote:
> > it compiles and runs under watcom
>
> That's strange. Lahey doesn't like it and my Fortran book says it's an
> error.
Do you have strict F77 conformance switch on or is it the default for
the Lahey compiler when presented a fixed source file? It is, as noted
elsewhere, a quite common extension but not, as you've noted, strict
F77.
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