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c++ - double and accuracy - Stack Overflow A double typically provides 16 (±1) decimal digits Your example shows this: 4 8 12 16 v v v v 0 947368421052631578 long double 0 947368421052631526 double The answers agree to 16 digits This is what should be expected Also, note that there's no guarantee in the C Standard that a long double has more precision than a double The last decimal digit (16th or 17th) is not necessarily accurate
What is the difference between float and double? - Stack Overflow I've read about the difference between double precision and single precision However, in most cases, float and double seem to be interchangeable, i e using one or the other does not seem to affec
C语言中，double**和double (*) [5]有什么区别？怎么理解？ - 知乎 double** 是指向 double* 类型的指针类型。 区别不是很显然的吗？ double [5] 类型能隐式转换成 double* 类型，但它们不是同一类型。 可以考虑一下 short 和 long 这两种类型是能相互隐式转换的，但它们显然没有因此变成同一类型。
methods - Double vs double in java - Stack Overflow Possible Duplicate: Java : different double and Double in comparison In a sample java program for one of my labs, I have two different methods taking Double and double parameters respectively
Should I use double or float? - Stack Overflow 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
What exactly does Double mean in java? - Stack Overflow A Double in Java is the class version of the double basic type - you can use doubles but, if you want to do something with them that requires them to be an object (such as put them in a collection), you'll need to box them up in a Double object
Difference between long double and double in C and C++ Possible Duplicate: long double vs double I am new to programming and I am unable to understand the difference between between long double and double in C and C++ I tried to Google it but was unab