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Help needed regarding Floating numbers

 
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zeeshan ahmed



Joined: 02 Dec 2010
Posts: 22

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Help needed regarding Floating numbers
PostPosted: Tue Mar 22, 2011 6:59 am     Reply with quote
Hi all ,
I'm new to ccs forum. I need some help regarding floating numbers. What I want to do is to break floating number e.g 998.76 into separate integers & then store in separate variables like i=9, j=9, k=8 etc.
I'm using 18f252 running at 20 MHz.
I use the following code ...but upto my knowledge this only works for 16 bit unsigned numbers. It is working fine with number less than 655.35 . What should I do to make it work for 32 bit numbers also?
Code:

ldiv_t ldivval;
float starting_val;

ldivval=ldiv((signed int16)(starting_val*100),10);
hundredth=ldivval.rem;
ldivval=ldiv(ldivval.quot,10);
tenth=ldivval.rem;
ldivval=ldiv(ldivval.quot,10);
ones=ldivval.rem;
ldivval=ldiv(ldivval.quot,10);
tens=ldivval.rem;
hunds=ldivval.quot;


I also use sprintf function to do the same ....but its taking too much time (arround 8ms at 20MHz) to execute, but working fine.

Please help....
Thanks
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