I have just been through this equation mess, so here are some
tips. Feel free to email me directly at [EMAIL PROTECTED]
or to group.
1. use the floating point manager
#include <NewFloatMgr.h>
2. If you need some math functions,
Install Mathlib.prc on your emulator or device
then include the mathlib header file
#include "MathLib.h"
and add mathlib.c to your project
3. Converting floating point results to strings
is a MOTHER, so I ended up faking it by stuffing
the floating point number into an integer
iResult = (int) (fResult*100); // my result is always between 0 and 1
then I used StrPrintF to create the string
StrPrintF (s, "%d %% (%d - %d)", wSurvival,
(wSurvival <= 10)?0:wSurvival - 10,
(wSurvival >= 90)?100:wSurvival + 10);
There is a simple conversion routine on the developer faq
at www.palm.com
4. To get your floating point result in the right format,
you'll probably have to parse a string which contains the
number in exponential notation, then reconstruct it in
your favorite format.
Hope this helps.
Paul Fearn
-----Original Message-----
From: Abraham Smith [mailto:[EMAIL PROTECTED]]
Sent: Thursday, March 25, 1999 3:26 PM
To: [EMAIL PROTECTED]
Subject: doing math on the palm
I am in need of advice. I am writing a palm program that has to take
numbers from several fields and run an equation with them. The equation
could produce a positive or negative number, with up to 3 decimal
places. I am trying to figure out what data types to store the numbers
from the fields in, as well as the result of the equation. I am also
trying to figure out how to display the results of this equation. I
would appreciate any advice on this issue.
Please feel free to email me directly, as well as post to the group, any
response. My email is [EMAIL PROTECTED]
Thanks in advance,
Avi I. Smith
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