Does anyone know of some ftp site that would have some Palm float mananger
code? A full implemented printf shared library would be very helpful.
Steve
Mark Cameron wrote:
> When I was first getting into using floating point math in my app, a lot of
> developers told me to just create my own float manager. I attempted to use
> the built-in float support anyway, but I became exasperated by its lack of
> precision. I finally gave in and wrote my own functions using Ints. I only
> require precision to 2 decimal places, and values ranging from
> approximately -1,000,000 to +1,000,000, so I was able to use Long Ints with
> two extra digits at the end. For example, the number 1 is stored as 100, and
> 12.34 is stored as 1234. It works quite well, but it took me a while to code
> all the arithmetic operators.
>
> Cheers,
> Mark
>
> -----Original Message-----
> From: Freeman, Barry <[EMAIL PROTECTED]>
> To: Palm Dev List (E-mail) <[EMAIL PROTECTED]>
> Date: Thursday, August 26, 1999 4:00 AM
> Subject: Float question (newbie)
>
> >Having just got back into C I'm trying to write a simple app for the palm.
> >
> >Basically it's a mileage calculator. Simple form with 2 edit fields and a
> >button.
> >
> >Litres goes in the first field, miles goes in the second and the button
> >does this:
> >
> > Convert Litres to gallons
> > Divide Miles by Gallons
> > set the text of a label to the Miles/Gallon.
> >
> >So far everything works as far as the event processing goes.
> >
> >One thing I can't quite get a hold of, is how to get the contents of the
> >edit fields and perform the arithmetic on them. They will be floats like
> >14.56 litres and 195.8 miles etc.
> >
> >I can't find the equivalent of strToF in standard C to convert a string to
> a
> >float. Plus I'm a little unclear as to what I have to do to get the text
> out
> >of edit fields: I'm assuming it's something like:
> >
> > Get Handle of Field.Text
> > Get Size of Field.Text
> > Get CharPointer to Field.Text
> > Allocate via MemHandleNew
> > Set a New CharPtr to New Memory
> > Copy the string from *Field.Text to *Newpointer
> >
> >It's all a little confusing <G>
> >
> >BAzz
> >
