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Code Issues

(#28) Use bit manipulation for ReadDecimal

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Array.Copy is slightly more inefficient than direct bit shift
This commit is contained in:
Oliver Booth 2021-03-03 19:09:20 +00:00
parent 34ee60437b
commit 3a46d58210
1 changed files with 4 additions and 1 deletions
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5
X10D/src/StreamExtensions/StreamExtensions.cs
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@ -85,7 +85,10 @@ namespace X10D.StreamExtensions
var bits = new int[partitionSize]; var bits = new int[partitionSize];
for (var index = 0; index < partitionSize; index += int32Size) for (var index = 0; index < partitionSize; index += int32Size)
{ {
Array.Copy(buffer, index, bits, 0, int32Size); bits[index] = (buffer[index + 0] << 24) // +0 because aligned code is best code
| (buffer[index + 1] << 16)
| (buffer[index + 2] << 8)
| (buffer[index + 3] << 0); // don't @ me
} }
return new decimal(bits); return new decimal(bits);