Precision (computer science)
In computer science, precision of a numerical quantity is a measure of the detail in which the quantity is expressed. This is usually measured in binary bits, but sometimes in decimal digits.
In java, one of the few programming languages with standardized precision data types, the following precisions are defined for the standard numerical types of the language. The ranges given are for signed integer values.
| Type name | Precision (binary bits) | Range |
|---|---|---|
byte
|
8 | -128 to +127 |
short
|
16 | -32,768 to 32,767 |
int
|
32 | -2,147,483,648 to 2,147,483,647 |
long
|
64 | -9,223,372,036,854,775,808 to -9,223,372,036,854,775,807 |