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Re: FortranForm

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  • Subject: [mg109550] Re: FortranForm
  • From: David Reiss <dbreiss at>
  • Date: Wed, 5 May 2010 06:04:24 -0400 (EDT)
  • References: <hrosvr$5sc$>

I think that the short answer to your questions is that FortranForm is
a very old component of Mathematica that I suspect has not been
updated since version 1.0 (and toe documentation indicates this).  So,
for question # 1 the answer is no.  For question #2 you need to write
a function of your own that searches out exact expressions and
substitutes the numerical values with the appropriate precision & c.

Hope this helps,


On May 4, 6:30 am, Gideon <gideon.simp... at> wrote:
> I have two, possibly related, questions on the FortranForm command.
> 1.  Is it possible to get Fortran 90/95 style output?  In particular,
> I'd like to have long lines broken up with the end of line &
> character, rather than the sixth column indicator as it is now.
> 2.  Is it possible to get it to output decimals where it has whole
> numbers?  For instance, in some code I have, a factor of sqrt(2)
> appears.  FortranForm renders this as Sqrt(2).  My compiler (gfortran
> 4.4) doesn't like this because it sees this as the square root of an
> integer.  I have been resolving this with find-replace, and suspect I
> could also deal with it by compiler flags, but it's annoying.

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