Long / Extended Double Precision Floating Point Data Type
How is "long double" datatype used in C++?.
Explanation
The "Long Double" or "Extended Double" data type is used to represent floating point numbers that occupies 8 bytes. This extented precision datatype is more precise than the "double" datatype. The range of values for the datatype is between +/- 1.7e and +/- 308.
In the above example the value of the long double floating point precision number is displayed along with the bytes occupied by the "long double" datatype.
Example :
| #include <iostream.h> void main() { double l = 1000000000.0; cout << "Long double floating number is:" << l << '\n'; cout << "The bytes occupied is:" << sizeof(l); } |
Result:
Extended Double precision floating number is: 1e+09
The bytes occupied is: 8
The bytes occupied is: 8
In the above example the value of the long double floating point precision number is displayed along with the bytes occupied by the "long double" datatype.
