The phrase "range error" is commonly used in computer programming to refer to an error that occurs when a value falls outside the acceptable range. The spelling of this phrase follows standard English rules, with the first word "range" being pronounced as /reɪndʒ/ with the "a" sound as in "rain" and the "g" being pronounced as a "j" sound. The second word "error" is pronounced as /ˈerər/ with the "e" sound as in "her" and the "r" sound being emphasized at the end.
A range error refers to a type of error that occurs in programming and computing when a value is outside the valid range for a specified operation, data type, or variable. It indicates that a value being used or manipulated is beyond the acceptable limits or boundaries defined for it. This error often arises due to calculations, comparisons, or operations that involve values that are not within the permitted range.
Range errors can be encountered in various scenarios. For instance, when performing mathematical calculations, attempting to divide a number by zero or taking the square root of a negative number can lead to a range error. Similarly, when working with variables of specific data types, such as integers or characters, assigning a value that exceeds the maximum or minimum allowed range for that type will result in a range error.
In programming, range errors are particularly important to handle as they can cause unexpected program behavior, crashes, or incorrect computation results. To mitigate range errors, developers employ techniques such as input validation, error checking, and exception handling. By implementing these preventive measures, programmers can ensure that values used in their programs are within the appropriate range, thereby reducing the possibility of encountering range errors and improving the overall reliability and stability of the software.
The term "range error" is not derived from a specific etymology but rather consists of two separate components: "range" and "error".
The word "range" originates from the Old French word "renge" meaning "row" or "line". It later evolved to encompass the sense of "extent" or "scope" in English. When referring to numbers, "range" generally indicates a span of values between a minimum and maximum.
On the other hand, "error" comes from the Latin word "error" meaning "wandering" or "straying from the right path". It is associated with mistakes, inaccuracies, or deviations from what is expected.
Thus, when combined, "range error" denotes an error that occurs when a value falls outside a specified range or is inconsistent with what is anticipated or acceptable within a given context, particularly in programming or mathematics.