Remove unsafe code from BigInteger.TryWriteBigEndian and TryWriteLittleEndian#124858

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Copilot wants to merge 9 commits intomainfrom

copilot/remove-unsafe-code-big-integer

Commits on Feb 25, 2026

Initial plan
Copilot
committed
Remove unsafe code from TryWriteBigEndian and TryWriteLittleEndian in BigInteger

Copilot
and
EgorBo
committed
Add Slice(0, byteCount) before Cast for bounds-check-elimination friendly loops

Copilot
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EgorBo
committed
Replace MemoryMarshal.Cast with BinaryPrimitives.WriteUInt32BigEndian/LittleEndian

Copilot
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EgorBo
committed
Use forward loops in TryWriteBigEndian, compute big-endian offset from index

Copilot
and
EgorBo
committed
Update BigInteger.cs
EgorBo
authored
Fix big-endian byte order regression, restore do-while/while structure

Copilot
and
EgorBo
committed

Commits on Feb 26, 2026