Sign some documents for Palm and you can get the source for the OS. If you
do find a way to implement printf, please share it with is ;-)
-----Original Message-----
From: Steve Sabram <[EMAIL PROTECTED]>
To: [EMAIL PROTECTED] <[EMAIL PROTECTED]>
Date: Thursday, August 26, 1999 5:07 PM
Subject: Re: Float question (newbie)
>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
>> >
>
>
