Re: Rounding off double precision

On Mon, 31 Mar 2008 17:45:41 +0100, Les wrote:

"Bamm" <bammster@xxxxxxxxx> wrote in message
news:eab4fbe9-3cf4-4015-9a87-e5e9a872f808@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
Sigh. The text you quoted above reads "creates a literal constant
with the double-precision value". The literal constant is
"3.141592653589793238d0" and is a double precision value. The fact
that it is being assigned to a single-precision parameter is something
different. A parameter is not a literal constant and vice-versa.

So how do you declare a constant in Fortran? I thought parameter was
the way constants were defined in Fortran, but if there is a better
way, I'd like to try it.

you would use something like :
double precision, parameter :: PI = 3.14159.......d0

integer, parameter :: ITYPE = 1

and so on

That, of course, is the preferred Fortran 90 syntax, but the Fortran 77
method

double precision pi
parameter (pi = 3.14159265358979d0)

also has the desired effect and is closer to what was originally asked.




--
Dave Seaman
Court affirms Judge Yohn's ruling.
<http://www.ipsnews.net/news.asp?idnews=41761>
.

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