C#

Verified against the Rust reference. Every one of Wickra's 514 indicators is replayed through all 10 languages and checked bit-for-bit against the Rust core's golden fixtures in CI — the math here is provably identical to every other binding (how).

The C# binding is the first language shim on the C ABI hub. It ships on NuGet as Wickra with the native library prebuilt for every supported platform; there is nothing to compile.

dotnet add package Wickra

• Distribution: NuGet (Wickra), native libraries bundled per RID (win/linux/osx × x64/arm64).
• Built on: the C ABI hub via [LibraryImport] source-generated P/Invoke, generated from wickra.h.
• Memory model: opaque handles wrapped in a SafeHandle; using for deterministic cleanup, with a finalizer as the safety net.

The class shape

Every indicator is an IDisposable class with Update / Batch / WarmupPeriod / IsReady / Reset. Prefer using so the native handle is freed deterministically.

using Wickra;

using var sma = new Sma(14);     // throws ArgumentException on invalid params
int w = sma.WarmupPeriod();      // updates until ready: 14
double v = sma.Update(42.0);     // NaN while warming up
bool ready = sma.IsReady();      // false until warmed up
sma.Reset();
// freed at the end of the using scope

The alt-chart bar builders (RenkoBars, KagiBars, …) have no WarmupPeriod / IsReady — a candle can complete 0..n bars, so they have no warmup.

Streaming

using var rsi = new Rsi(14);
foreach (var price in feed)
{
    var v = rsi.Update(price);
    if (double.IsFinite(v) && v > 70.0)
    {
        Console.WriteLine($"overbought {v:F2}");
    }
}

Batch (one call over a whole series)

using var ema = new Ema(20);
double[] values = ema.Batch(prices); // NaN at warmup positions

Multi-output indicators

Indicators with several outputs return a nullable record struct — null while warming up:

using var macd = new MacdIndicator(12, 26, 9);
foreach (var price in feed)
{
    if (macd.Update(price) is { } m)
    {
        Console.WriteLine($"macd={m.Macd:F4} signal={m.Signal:F4} hist={m.Histogram:F4}");
    }
}

Candle-input indicators take OHLCV plus a timestamp, e.g. atr.Update(open, high, low, close, volume, timestamp).

More

• Quickstart: C# (docs)
• Examples
• Benchmarks