What type of numbers are represented using Int63 data type?

The Int63 data type is specifically designed to handle whole numbers, which are integers that do not have any fractional or decimal component. This representation allows for both positive and negative values, as well as zero, all within the bounds that a 63-bit integer can offer.

Whole numbers are categorized as such because they do not include any decimal points or fractional parts, making them distinct from fixed precision, variable, or decimal types that do accommodate fractions or more complex numeric structures. The choice of Int63 emphasizes its usage for scenarios where accurate representation of whole numbers is critical, such as in counting or indexing where fractions do not apply.

In contrast, fixed precision numbers can represent a wide range of values with a set number of digits both before and after the decimal point. Variable numbers allow for a flexible range of precision and scale but may not provide the strict whole number integrity that Int63 does. Decimal numbers explicitly involve fractional components, further differentiating them from the strict whole numbers represented by the Int63 data type.