ConvertToInt64

ConvertToInt64 is a data conversion function used in various programming libraries to convert a value to a 64-bit signed integer, commonly referred to as Int64. The exact signature and behavior vary by language, but the purpose is to produce a numeric integer value suitable for arithmetic, indexing, or data storage. In many ecosystems, a closely related name is ToInt64 or parseLong.

Behavior and inputs vary by implementation. Typically, numeric inputs (integers, floating point, or decimals) are converted to a 64-bit integer, with floating point inputs often subjected to rounding according to the language’s rules. String inputs are parsed as numeric representations, sometimes with culture-invariant parsing. Boolean values may be mapped to 1 for true and 0 for false in some environments. Null inputs are usually rejected with an error.

Exceptions and edge cases. Conversions may fail for null or empty strings, non-numeric strings, or values outside the representable range of a 64-bit signed integer, which is -9223372036854775808 to 9223372036854775807. Depending on the language, failures may throw exceptions such as FormatException, OverflowException, or ArgumentNullException, or may return a default value or indicate failure through a result type.

See also. Similar functionality exists under various names in different languages, such as Convert.ToInt64 in .NET, Long.parseLong in Java, or parseLong in other libraries. The exact behavior—rounding, parsing rules, and error handling—depends on the host language and library version. Examples illustrate typical usage but may vary in details.