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. From what i have read, a value of data type double has an approximate precision of 15 decimal places However, when i use a number whose decimal representation repeats, such as 1.0/7.0, i find tha.
Using long double i get 18/19 = 0.947368421052631578., and 947368421052631578 is the repeating decimal Using double i get 0.947368421052631526.however, the former is correct 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. Double d = ((double) num) / denom
I don't like casting primitives, who knows what may happen. Long double vs double i am unable to understand the difference between between long double and double in c and c++ 12 how can i realiably check if a variable is a double You need to be clearer about what you're really trying to do here I don't think you're asking what you think you're asking, and it's worth being aware of the differences in terminology If you've got a variable which is declared to be of type double, then it's definitely a double.
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