sqrth

Sqrth is a function name encountered in some programming projects and documentation for computing the square root of a numeric value. It is not a universally standardized mathematical symbol; rather, it represents an implementation-specific wrapper or alias around the square-root operation provided by the language or library, commonly mapping to the standard sqrt function.

Domain and return: In real-number contexts, sqrth typically accepts nonnegative inputs and returns the principal, nonnegative square root. Behavior for negative inputs varies: some environments signal a domain error or produce NaN; others may emit a warning or return a complex result, depending on the numeric types supported.

Computation and optimization: Implementations may simply call the language’s built-in sqrt, or use iterative methods such as Newton-Raphson to refine an initial guess. High-performance libraries optimize for accuracy and speed, including handling of special values like zero, infinity, and NaN. The exact numerical method and precision depend on the surrounding system and data types.

Variations and usage: Because sqrth is not standardized, its exact signature (types, precision, error handling) depends on the project. In many languages, developers prefer directly using sqrt or pow(x, 0.5). The name sqrth sometimes appears in tutorials or legacy code as a convention to distinguish square root from other root-related functions.

See also: sqrt, pow, root functions.