Author

Topic: A handy chart for Math class. Check it out.

maha anna
bartender

posted February 09, 2000 10:15 PM

While preparing for the Exam I wrote a small Java appln. to test the Math class's abs(),floor(),ceil(),round() methods for various input values. I thought it may be helpful for others also to verify their readiness in Math class. Any comments welcome. (The Table is well below this page. I don't know why these new lines are added.)

*Input (double)*	*round()* (long)	*ceil()* (double)	*floor()* (double)	*abs()* (double)
Double.NaN or Float.Nan	0	Nan	Nan	Nan
Double.NEGATIVE_INFINITY	-9223372036854775808 Long.MIN_VALUE	-Infinity	-Infinity	Infinity
Double.POSITIVE_INFINITY	9223372036854775807 Long.MAX_VALUE	Infinity	Infinity	Infinity
Float.NEGATIVE_INFINITY	-2147483648 Integer.MIN_VALUE	-Infinity	-Infinity	Infinity
Float.POSITIVE_INFINITY	2147483647 Integer.MAX_VALUE	Infinity	Infinity	Infinity
-4.3	-4	-4.0	-5.0	4.3
-99.1	-99	-99.0	-100.0	99.1
-99.0	-99	-99.0	-99.0	99.0
99.0	99	99.0	99.0	99.0
-0.01	0	-0.0	-1.0	0.01
0.1	0	1.0	0.0	0.1
-4.0	-4	-4.0	-4.0	4.0
-4.5	-4	-4.0	-5.0	4.5
-4.7	-5	-4.0	-5.0	4.7

-inf ... Long.MIN.... Integer.MIN ....-100 -99 -98... -1 -0.0 0.0 +1 .....98 99 100 .... Integer.MAX ... Long.MAX....+inf -- Remember this sale

Double.MIN_VALUE 4.9E-324 Double.MAX_VALUE 1.7976931348623157E308
Float.MIN_VALUE 1.4E-45 Float.MAX_VALUE 3.4028235E38
Long.MIN_VALUE -9223372036854775808 Long.MAX_VALUE 9223372036854775807
Integer.MIN_VALUE -2147483648 Integer.MAX_VALUE 2147483647

[This message has been edited by maha anna (edited February 29, 2000).]

maha anna
bartender

posted February 09, 2000 10:23 PM

What happened? Jim....... Can you edit this Table?

[This message has been edited by maha anna (edited February 10, 2000).]