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ANKSigned+Numbers.swift
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//=----------------------------------------------------------------------------=
// This source file is part of the AwesomeNumbersKit open source project.
//
// Copyright (c) 2022 Oscar Byström Ericsson
// Licensed under Apache License, Version 2.0
//
// See http://www.apache.org/licenses/LICENSE-2.0 for license information.
//=----------------------------------------------------------------------------=
#if DEBUG
import ANKFullWidthKit
import ANKSignedKit
import XCTest
//*============================================================================*
// MARK: * ANK x Signed x Numbers
//*============================================================================*
final class ANKSignedTestsOnNumbers: XCTestCase {
typealias S = Int256
typealias M = UInt256
typealias T = ANKSigned<UInt256>
typealias D = ANKSigned<UInt>
//=------------------------------------------------------------------------=
// MARK: Tests
//=------------------------------------------------------------------------=
func testZero() {
ANKAssertIdentical(T( ), T(M( ), as: .plus ))
ANKAssertIdentical(T.zero, T(M( ), as: .plus ))
}
func testEdges() {
ANKAssertIdentical(T.max, T(M.max, as: .plus ))
ANKAssertIdentical(T.min, T(M.max, as: .minus))
}
//=------------------------------------------------------------------------=
// MARK: Tests x Digit
//=------------------------------------------------------------------------=
func testFromDigit() {
ANKAssertIdentical(T(digit: D(4)), T(4))
ANKAssertIdentical(T(digit: -D(4)), -T(4))
ANKAssertIdentical(D(digit: D(4)), D(4))
ANKAssertIdentical(D(digit: -D(4)), -D(4))
}
//=------------------------------------------------------------------------=
// MARK: Tests x Signitude
//=------------------------------------------------------------------------=
func testsToSignitude() {
XCTAssertEqual(S( T(M( 1), as: .plus )), S( 1))
XCTAssertEqual(S(exactly: T(M( 1), as: .plus )), S( 1))
XCTAssertEqual(S(clamping: T(M( 1), as: .plus )), S( 1))
XCTAssertEqual(S( T(M( 1), as: .minus)), S(-1))
XCTAssertEqual(S(exactly: T(M( 1), as: .minus)), S(-1))
XCTAssertEqual(S(clamping: T(M( 1), as: .minus)), S(-1))
XCTAssertEqual(S(exactly: T(M.max, as: .plus )), nil)
XCTAssertEqual(S(clamping: T(M.max, as: .plus )), S.max)
XCTAssertEqual(S(exactly: T(M.max, as: .minus)), nil)
XCTAssertEqual(S(clamping: T(M.max, as: .minus)), S.min)
XCTAssertEqual(S( T(S.max.magnitude, as: .plus )), S.max)
XCTAssertEqual(S(exactly: T(S.max.magnitude, as: .plus )), S.max)
XCTAssertEqual(S(clamping: T(S.max.magnitude, as: .plus )), S.max)
XCTAssertEqual(S( T(S.min.magnitude, as: .minus)), S.min)
XCTAssertEqual(S(exactly: T(S.min.magnitude, as: .minus)), S.min)
XCTAssertEqual(S(clamping: T(S.min.magnitude, as: .minus)), S.min)
}
func testToSignitudeAsPlusMinusZero() {
XCTAssertEqual(S( T(M( ), as: .plus )), S( ))
XCTAssertEqual(S(exactly: T(M( ), as: .plus )), S( ))
XCTAssertEqual(S(clamping: T(M( ), as: .plus )), S( ))
XCTAssertEqual(S( T(M( ), as: .minus)), S( ))
XCTAssertEqual(S(exactly: T(M( ), as: .minus)), S( ))
XCTAssertEqual(S(clamping: T(M( ), as: .minus)), S( ))
}
func testFromSignitude() {
ANKAssertIdentical(T( S( 1)), T(1))
ANKAssertIdentical(T(exactly: S( 1)), T(1))
ANKAssertIdentical(T(clamping: S( 1)), T(1))
ANKAssertIdentical(T( S( )), T( ))
ANKAssertIdentical(T(exactly: S( )), T( ))
ANKAssertIdentical(T(clamping: S( )), T( ))
ANKAssertIdentical(T( S(-1)), -T(1))
ANKAssertIdentical(T(exactly: S(-1)), -T(1))
ANKAssertIdentical(T(clamping: S(-1)), -T(1))
ANKAssertIdentical(T( S.max), T(M(S.max) + 0, as: .plus ))
ANKAssertIdentical(T(exactly: S.max), T(M(S.max) + 0, as: .plus ))
ANKAssertIdentical(T(clamping: S.max), T(M(S.max) + 0, as: .plus ))
ANKAssertIdentical(T( S.min), T(M(S.max) + 1, as: .minus))
ANKAssertIdentical(T(exactly: S.min), T(M(S.max) + 1, as: .minus))
ANKAssertIdentical(T(clamping: S.min), T(M(S.max) + 1, as: .minus))
}
//=------------------------------------------------------------------------=
// MARK: Tests x Magnitude
//=------------------------------------------------------------------------=
func testsToMagnitude() {
XCTAssertEqual(M( T(M( 1), as: .plus )), M( 1))
XCTAssertEqual(M(exactly: T(M( 1), as: .plus )), M( 1))
XCTAssertEqual(M(clamping: T(M( 1), as: .plus )), M( 1))
XCTAssertEqual(M(exactly: T(M( 1), as: .minus)), nil)
XCTAssertEqual(M(clamping: T(M( 1), as: .minus)), M.min)
XCTAssertEqual(M( T(M.max, as: .plus )), M.max)
XCTAssertEqual(M(exactly: T(M.max, as: .plus )), M.max)
XCTAssertEqual(M(clamping: T(M.max, as: .plus )), M.max)
XCTAssertEqual(M(exactly: T(M.max, as: .minus)), nil)
XCTAssertEqual(M(clamping: T(M.max, as: .minus)), M.min)
XCTAssertEqual(M( T(M.max.magnitude, as: .plus )), M.max)
XCTAssertEqual(M(exactly: T(M.max.magnitude, as: .plus )), M.max)
XCTAssertEqual(M(clamping: T(M.max.magnitude, as: .plus )), M.max)
XCTAssertEqual(M( T(M.min.magnitude, as: .minus)), M.min)
XCTAssertEqual(M(exactly: T(M.min.magnitude, as: .minus)), M.min)
XCTAssertEqual(M(clamping: T(M.min.magnitude, as: .minus)), M.min)
}
func testToMagnitudeAsPlusMinusZero() {
XCTAssertEqual(M( T(M( ), as: .plus )), M( ))
XCTAssertEqual(M(exactly: T(M( ), as: .plus )), M( ))
XCTAssertEqual(M(clamping: T(M( ), as: .plus )), M( ))
XCTAssertEqual(M( T(M( ), as: .minus)), M( ))
XCTAssertEqual(M(exactly: T(M( ), as: .minus)), M( ))
XCTAssertEqual(M(clamping: T(M( ), as: .minus)), M( ))
}
func testFromMagnitude() {
ANKAssertIdentical(T( M( )), T( ))
ANKAssertIdentical(T(exactly: M( )), T( ))
ANKAssertIdentical(T(clamping: M( )), T( ))
ANKAssertIdentical(T( M( 1)), T( 1))
ANKAssertIdentical(T(exactly: M( 1)), T( 1))
ANKAssertIdentical(T(clamping: M( 1)), T( 1))
ANKAssertIdentical(T( M.max), T.max)
ANKAssertIdentical(T(exactly: M.max), T.max)
ANKAssertIdentical(T(clamping: M.max), T.max)
}
}
#endif