kingchenc
0c925aa9d5
* feat(c-abi): expose warmup_period / is_ready across the C ABI bindings The C ABI hub exposed new/update/batch/reset/free per indicator but not the Indicator::warmup_period / is_ready queries that the native (Python/Node/WASM) bindings already had, so C/C#/Go/Java/R callers could not ask an indicator whether it was warmed up without feeding it and watching for NaN. Regenerated from the ScriptHelpers capi + language generators: - bindings/c: wickra_<ind>_warmup_period (size_t) and wickra_<ind>_is_ready (bool) for every indicator (504; the 10 alt-chart bar builders are excluded by design). wickra.h regenerated via cbindgen (additive only). - bindings/csharp: int WarmupPeriod() / bool IsReady() on each wrapper. - bindings/go: WarmupPeriod() int / IsReady() bool. - bindings/java: int warmupPeriod() / boolean isReady(). - bindings/r: C glue + registration; hand-written warmup_period() / is_ready() S3 generics in methods.R, plus NAMESPACE exports. Tests: C-ABI Rust unit tests, the C examples/archetypes.c suite, and the C#, Go, Java and R archetype suites all gain a warmup/is_ready transition check. * build(go): sync vendored wickra.h with the C ABI header The Go binding vendors bindings/c/include/wickra.h; refresh it with the new warmup_period / is_ready declarations so the CI sync check passes.
Wickra — C#
Streaming-first technical indicators for C#. dotnet add package Wickra —
prebuilt native library, no system dependencies.
Wickra is a multi-language technical-analysis library with a Rust core and
bindings for Python, Node.js and WASM, plus a C ABI for C, C++, C#, Go, Java, R and any
other C-capable language. Every indicator is an O(1)
streaming state machine, so live trading bots and historical backtests share
the exact same implementation. This package is the C# binding; it consumes the
C ABI hub through [LibraryImport] P/Invoke and exposes all 514 streaming-first
indicators as idiomatic IDisposable classes.
Install
dotnet add package Wickra
The native library ships prebuilt per platform (Linux, macOS, Windows — x64 and
arm64) under runtimes/<rid>/native/, selected automatically. There is nothing
to compile. Targets .NET 8 and later.
Quick start
using Wickra;
// Batch: run an indicator over a whole series (NaN at warmup positions).
var prices = Enumerable.Range(0, 1000).Select(i => 100.0 + i * 0.1).ToArray();
using var sma = new Sma(20);
double[] values = sma.Batch(prices);
// Streaming: the same indicator, fed tick by tick in O(1).
using var rsi = new Rsi(14);
foreach (var price in liveFeed)
{
var value = rsi.Update(price); // NaN during warmup, no recomputation
if (double.IsFinite(value) && value > 70)
{
Console.WriteLine("overbought");
}
}
Batch(prices) and feeding the same prices through Update() produce identical
values — the equivalence is enforced by the test suite. Multi-output indicators
(MACD, Bollinger, ADX, …) return a nullable record struct, null while warming up.
Benchmark
benchmarks/ reports streaming and batch updates-per-second for SMA, ATR
and MACD. It measures this binding's FFI overhead, not a cross-library ratio
(the same Rust core runs under every binding) — see the repository
BENCHMARKS.md §3.
cargo build -p wickra-c --release
dotnet run -c Release --project benchmarks
Documentation
The full indicator catalogue, guides, quickstarts, and API reference live in the main repository and documentation site:
- Repository & full indicator list: https://github.com/wickra-lib/wickra
- Docs (quickstarts, cookbook, TA-Lib migration): https://docs.wickra.org
- Runnable examples:
examples/csharp/
Wickra ships native bindings for Python, Node.js, WASM and Rust, plus a
C ABI hub that any C-capable language (C, C++, C#, Go, Java, R) links against —
all exposing the same indicators from the shared, unsafe-forbidden Rust core.
Security
Found a security issue? Please don't open a public issue. Report it privately
via the affected repository's Security tab ("Report a vulnerability") or email
support@wickra.org with a subject line starting [wickra security]. Full
policy: https://github.com/wickra-lib/wickra/blob/main/SECURITY.md.
Disclaimer
Wickra is an indicator toolkit, not a trading system. The values it computes are deterministic transforms of the input data — they are not financial advice and do not predict the market. Any use in a live trading context is at your own risk. The library is provided as is, without warranty of any kind.
License
Licensed under either of Apache-2.0 or MIT at your option.