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NumericAnnex supplements the numeric facilities provided in the Swift standard library.
- The exponentiation operator
**and the compound assignment operator
- Extension methods for
BinaryIntegerexponentiation, 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.Xoroshiro, two reference types implementing efficient pseudo-random number generators.
Note: This project is in the early stages of development and is not production-ready at this time.
NumericAnnex requires Swift 4.1 (
swift-4.1-branch) or Swift 4.2 (
Apple platforms, it also requires the Security framework for cryptographically
secure random bytes.
After NumericAnnex has been cloned or downloaded locally, build the library
using the command
swift build (macOS) or
swift build -Xcc -D_GNU_SOURCE
(Linux). Run tests with the command
swift test (macOS) or
swift test -Xcc -D_GNU_SOURCE (Linux). An Xcode project can be generated with
swift package generate-xcodeproj.
To add the package as a dependency using CocoaPods,
insert the following line in your
pod 'NumericAnnex', '~> 0.1.19'
Swift Package Manager can also be used to add the package as a dependency. See Swift documentation for details.
import NumericAnnex print(2 ** 3) // Prints "8". print(4.0 ** 5.0) // Prints "1024.0". print(Int.cbrt(8)) // Prints "2". print(Double.cbrt(27.0)) // Prints "3.0". var x: Ratio = 1 / 4 // Ratio is a type alias for Rational<Int>. print(x.reciprocal()) // Prints "4". x *= 8 print(x + x) // Prints "4". x = Ratio(Float.phi) // Golden ratio. print(x) // Prints "13573053/8388608". var z: Complex64 = 42 * .i // Complex64 is a type alias for Complex<Float>. print(Complex.sqrt(z)) // Prints "4.58258 + 4.58258i". z = .pi + .i * .log(2 - .sqrt(3)) print(Complex.cos(z).real) // Prints "-2.0".
All public protocols, types, and functions have been carefully documented in the code. See the formatted reference for details.
The project adheres to many design patterns found in the Swift standard library.
Math types provide methods such as
FloatingPoint types provide methods such as
No free functions are declared in this library unless they overload existing
ones in the Swift standard library. Instead, functions such as
tan(_:) are provided as static members. This avoids collisions with C standard
library functions that you may wish to use. It also promotes clarity at the call
site when the result of a complex operation differs from that of its real
Complex128.cbrt(-8) != -2).
- Add more tests, including performance tests
- Design and implement additional methods on
All original work is released under the MIT license. See LICENSE for details.
Portions of the complex square root and elementary transcendental functions use checks for special values adapted from libc++. Code in libc++ is dual-licensed under the MIT and UIUC/NCSA licenses.
*Note that all licence references and agreements mentioned in the NumericAnnex README section above are relevant to that project's source code only.