NumericAnnex

NumericAnnex supplements the numeric facilities provided in the Swift standard library.

Features:

• The exponentiation operator ** and the compound assignment operator **=.
• Extension methods for BinaryInteger exponentiation, square root, cube root, greatest common divisor, and least common multiple.
• Math, a protocol for signed numeric types that support elementary functions.
• Real, a protocol for floating-point types that support elementary functions and a selection of special functions.
• PRNG, a protocol for pseudo-random number generators.
• Rational, a value type to represent rational values which supports division by zero.
• Complex, a value type to represent complex values in Cartesian form.
• Random and Random.Xoroshiro, two reference types implementing efficient pseudo-random number generators.