1. double precision reals??
Hi all,
How can I make sure that a variable is always of type "double precision" ?
If I make it an atom, it 'could' be a double precision real, but if the
range of the number is small enough, Euphoria turns it into a single
precision real, is it not?
For instance, the double precision number 5.123456789012345678e4 can be
represented by a single precision real but with less accuracy namely
something like this: 5.123456789e4. I believe that Euphoria automatically
turns my double precision atom into a single precision atom when it has the
chance. Is this correct and how can I 'force' Euphoria to always regard my
variable as a double precision value???
Is this asking too much of Euphoria?
Eddy
2. Re: double precision reals??
> Hi all,
> How can I make sure that a variable is always of type "double precision" ?
> If I make it an atom, it 'could' be a double precision real, but if the
> range of the number is small enough, Euphoria turns it into a single
> precision real, is it not?
> For instance, the double precision number 5.123456789012345678e4 can be
> represented by a single precision real but with less accuracy namely
> something like this: 5.123456789e4. I believe that Euphoria automatically
> turns my double precision atom into a single precision atom when it has the
> chance. Is this correct and how can I 'force' Euphoria to always regard my
> variable as a double precision value???
> Is this asking too much of Euphoria?
>
> Eddy
Hi,
That shouldn't be possible, euphoria hides its internal implementation
from the programer.
Thomas Parslow (PatRat) ICQ #:26359483
Rat Software
http://www.rat-software.com/
Please leave quoted text in place when replying
3. Re: double precision reals??
Eddy Van Esch wrote:
>
> Hi all,
> How can I make sure that a variable is always of type "double precision" ?
> If I make it an atom, it 'could' be a double precision real, but if the
> range of the number is small enough, Euphoria turns it into a single
> precision real, is it not?
> For instance, the double precision number 5.123456789012345678e4 can be
> represented by a single precision real but with less accuracy namely
> something like this: 5.123456789e4. I believe that Euphoria automatically
> turns my double precision atom into a single precision atom when it has the
> chance. Is this correct and how can I 'force' Euphoria to always regard my
> variable as a double precision value???
> Is this asking too much of Euphoria?
>
> Eddy
Hi,
there are NO single precisions in EU. There are only integers (32 bit)
or double precisions. Never will be a loss of accuracy within 15 digits.
Read 2.1.1 of the reference manual.
Rolf
4. Re: double precision reals??
Rolf Schroeder wrote:
> ...... There are only integers (32 bit) ...
Of course integers in Eu have 31 bit.
Rolf
