Some improvements ported from Numberick.

• #151 Improved Int strides
• #150 isPowerOf2 should not return true for signed min
• #149 Single perfect radix encoding specialization

• #148 Fix masking shifts by negative multiples of non-power-of-two bit widths

More changes ported from my other project: Numberick.

• #147 Custom index methods
• #146 Shift methods rework
• #145 30% faster decoding
• #144 Galaxy-brain radix exponentiation
• #143 Back to front encoding is fastest
• #142 Future-proof core integer dividingFullWidthReportingOverflow(_:)
• #141 Use xctestplan(s)
• #140 Improved string decoding
• #139 Add uninitialized(_:)

Lots of improvements inspired by my other project: Numberick.

• #137 No Self.DoubleWidth and Self.Plus1 aliases
• #136 No minLastIndex[...] methods
• #135 Req. generic masking shifts
• #134 Bounds checked pointers
• #132 Consistent division by zero semantics
• #131 Expose unchecked shift methods
• #130 Overload Swift's generic masking shifts
• #129 Replace ANKSign and demote ANKSigned to ANKSignedKit
• #128 Remove ANKError model
• #127 Rework core protocols
• #126 Remove redundant type aliases
• #125 Rename ANKFoundation as ANKCoreKit
• #124 Req. dividingFullWidthReportingOverflow(_:)
• #123 No matches(repeating: and isFull
• #122 Galaxy brain multipliedReportingOverflow(by:)
• #121 Req. twosCompelementSubsequence(_:)
• #120 ascending and descending tuple get and set
• #119 High and Low init
• #118 Sneaky signed ± anti-overflow
• #117 Decoding strings without digits
• #112 Move init(x32:|x64:) to test targets
• #111 Add precondition messages

New and improved comparisons. A fix thereof.

• #106 Fix Signed's < operator
• #105 Three-way, and faster, comparisons

New ANKBinaryInteger comparisons

func compared(to other: Self) -> Int // -1, 0, 1

Faster multiplication. Better testing. A fix thereof.

• #104 Fixed-width bitwise inverse of isZero
• #103 Faster signed multiplication
• #102 Low Signed/multiplyFullWidth(by:) sign
• #101 Denormalized Signed tests
• #99 Simultaneous non/mutating tests

New ANKFixedWidthInteger getters

var  isFull: Bool { get }
func matches(repeating bit: Bool) -> Bool

Fewer protocols. Faster builds. What's not to like?

GitHub

• #98 Fix mostSignificantBit comment
• #97 Req. integer text de/encoding
• #96 No Words
• #95 Merge [...]Large[...]Integer
• #94 No IntOrUInt
• #93 No ContiguousBytes
• #92 One Shade of Un/signed™
• #91 Unsigned is Magnitude req.
• #89 The Great Simplification™

Protocols

1. ANKBigEndianTextCodable
2. ANKBinaryInteger
3. ANKBitPatternConvertible
4. ❌ ANKContiguousBytes
5. ANKCoreInteger
6. ANKFixedWidthInteger
7. ❌ ANKIntOrUInt
8. ❌ ANKLargeBinaryInteger
9. ❌ ANKLargeFixedWidthInteger
10. ❌ ANKMutableContiguousBytes
11. ❌ ANKSignedFixedWidthInteger
12. ANKSignedInteger
13. ❌ ANKSignedLargeBinaryInteger
14. ❌ ANKSignedLargeFixedWidthInteger
15. ❌ ANKTrivialContiguousBytes
16. ❌ ANKUnsignedFixedWidthInteger
17. ANKUnsignedInteger
18. ❌ ANKUnsignedLargeBinaryInteger
19. ❌ ANKUnsignedLargeFixedWidthInteger
20. ❌ ANKWords

Some new methods. A precondition fix. Cleanup n' stuff.

• #88 quotientAndRemainderReportingOverflow(dividingBy:)
• #87 Int256.min.quotientAndRemainder(dividingBy: -1) should trap
• #86 ANKFixedWidthInteger.BitPattern
• #84 Lazy division overflow detection
• #82 Arithmetic protocol extensions
• #81 Truncating multiplication operators

Rock. Paper. blackHole(_:)

• #80 Hide unsafe words base
• #79 Keep "[hashtag] good form [trademark]"
• #77 Remove error operations
• #76 Better bitshifts
• #75 Better digit arithmetic
• #72 Better division
• #69 Rock. Paper. blackHole(_:)

Larger literals. Sendable models. Swift(er) encoding.

• #70 Sendable
• #68 [Im]PerfectRadixUIntRoot
• #67 Magic chunk count
• #66 throwing decodeBigEndianText(_:radix:)
• #65 Up to 4x faster encoding
• #64 Remove: ExpressibleByStringLiteral
• #20 StaticBigInt

Requirements

Language and platform requirements were updated to match StaticBigInt.