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Old 03-06-2007, 06:18 PM   #1
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floating point number

Hi all!
I have a question about floating point numbers.
How should I find out the smallest float >0.I was suggested to use a loop until I reach the smallest possible float(representable float)>0.
How should I find the infinity for float.Can anyone give suggestions?
I know that the representation for infinity internally is
0/1 11111111 0000000000000000000000
1bit 8bits 23 bits
Thanks in advance
Old 03-07-2007, 09:30 AM   #2
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You did not post what system your penguin is, (hardware and software) neither language (BASIC, Pascal, PL/1, PL/I, fortran, BCPL, CPL, B, Modula, Algol, prolog, LISP, COBOL, Ada, Forth...) The answer varies depending...

If you are using C, these values are defined in float.h
If you are using LISP, usually precision is infinite.
In some languages, there is not such a thing like float.

Happy Penguins!

Last edited by kaz2100; 03-09-2007 at 11:34 AM.
Old 03-07-2007, 04:17 PM   #3
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This sounds like a homework assignment.
Maybe look at /usr/include/ieee754.h
You can probably do it by hand. Hint: 0.1 = 1/2 * 3/15


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