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This commit is contained in:
Miha Kralj
2026-01-25 16:01:45 -08:00
parent 2836f253c4
commit e59665c8f0
399 changed files with 6892 additions and 1323 deletions
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lib/trends_FIR/conv/Conv.cs
+23 -4
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@@ -40,7 +40,9 @@ public sealed class Conv : AbstractBase
public Conv(double[] kernel)
{
if (kernel == null || kernel.Length == 0)
{
throw new ArgumentException("Kernel must not be empty", nameof(kernel));
}
_period = kernel.Length;
_kernel = new double[_period];
@@ -134,7 +136,10 @@ public sealed class Conv : AbstractBase
public override TSeries Update(TSeries source)
{
if (source.Count == 0) return [];
if (source.Count == 0)
{
return [];
}
int len = source.Count;
List<long> t = new(len);
@@ -209,13 +214,21 @@ public sealed class Conv : AbstractBase
public static void Batch(ReadOnlySpan<double> source, Span<double> output, double[] kernel)
{
if (source.Length != output.Length)
{
throw new ArgumentException("Source and output must have the same length", nameof(output));
}
if (kernel == null || kernel.Length == 0)
{
throw new ArgumentException("Kernel must not be empty", nameof(kernel));
}
int len = source.Length;
int period = kernel.Length;
if (len == 0) return;
if (len == 0)
{
return;
}
// Use stackalloc for small kernels to avoid heap allocation
Span<double> window = period <= 256 ? stackalloc double[period] : new double[period];
@@ -240,9 +253,15 @@ public sealed class Conv : AbstractBase
window[windowIdx] = val;
windowIdx = (windowIdx + 1);
if (windowIdx >= period) windowIdx = 0;
if (windowIdx >= period)
{
windowIdx = 0;
}
if (count < period) count++;
if (count < period)
{
count++;
}
double sum = 0;