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PICList Thread
'Floating Point.'
1997\04\11@235706 by John Dammeyer

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Walter,

I have a customer that is insisting on 'double' floating point and a PIC(48
or 64 bits).  Having just recently converted 6801 fp routines to 68HC05 fp
routines I know it takes a fair bit of code.

Do you have an FP libary for PIC or can you give me a statement that I can
use to convince the customer that they are 'pushing it'. Or,  should I
convert the 68HC05 routines? 8-(

Cheers,

John Dammeyer

Pioneers are the ones, face down in the mud,
with arrows in their backs.
Automation Artisans Inc.      Ph. 1-250-544-4950
PO Box 20002                  Fax 1-250-544-4954
Sidney, BC CANADA V8L 5C9

1997\04\14@120705 by sdattalo

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John Dammeyer wrote:
>
> Walter,
>
> I have a customer that is insisting on 'double' floating point and a PIC(48
> or 64 bits).

64 bits! Check out this month's issue of Embedded Systems Programming.
Jack Crenshaw writes an article about floating point arithmetic
(specificially about multiplication) in which he notes:

"With a 64-bit counter, we can span the solar system to an
accuracy of one wavelength of light."

Perhaps this is the resolution your customer seeks.

Scott

--
"The problem with television is not the resolution."
                                Hugh. F. Frohbach

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