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GH-44237: [C#] Use stack allocated buffer when serializing decimal values #44238

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Sep 26, 2024
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GH-44237: [C#] Use stack allocated buffer when serializing decimal values #44238

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7 changes: 7 additions & 0 deletions csharp/src/Apache.Arrow/DecimalUtility.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -223,7 +223,14 @@ internal static void GetBytes(decimal value, int precision, int scale, int byteW
{
// create BigInteger from decimal
BigInteger bigInt;

#if NET5_0_OR_GREATER
Span<int> decimalBits = stackalloc int[4];
decimal.GetBits(value, decimalBits);
#else
int[] decimalBits = decimal.GetBits(value);
#endif

int decScale = (decimalBits[3] >> 16) & 0x7F;
#if NETCOREAPP
Span<byte> bigIntBytes = stackalloc byte[13];
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