However, in most cases, float and double seem to be interchangeable, i.e Using one or the other does not seem to affec. The 53 bits of double s give about 16 digits of precision The 24 bits of float s give about 7 digits of precision. 494 a double is not an integer, so the cast won't work Note the difference between the double class and the double primitive
Also note that a double is a number, so it has the method intvalue, which you can use to get the value as a primitive int. 39 this question already has answers here Double vs double in java [duplicate] (7 answers) difference between decimal, float and double in.net Double d = ((double) num) / denom But is there another way to get the correct double result I don't like casting primitives, who knows what may happen.
I tried to google it but was unab. A double has a much higher precision due to it's difference in size If the numbers you are using will commonly exceed the value of a float, then use a double Several other people have mentioned performance isssues That would be exactly last on my list of considerations Correctness should be your #1 consideration.
The term double precision is something of a misnomer because the precision is not really double In my earlier question i was printing a double using cout that got rounded when i wasn't expecting it How can i make cout print a double using full precision?
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