98 lines
2.1 KiB
Markdown
98 lines
2.1 KiB
Markdown
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# talib
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Go wrapper for selected [TA-Lib](https://ta-lib.org/) functions using [`purego`](https://github.com/ebitengine/purego) to dynamically load the native TA-Lib shared library at runtime.
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This project currently exposes a small subset of TA-Lib functions:
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- `HT_DCPERIOD`
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- `HT_DCPHASE`
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- `HT_PHASOR`
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- `HT_SINE`
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- `HT_TRENDMODE`
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- `ADD`
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## Requirements
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- Go `1.26`
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- A native TA-Lib shared library installed on the host system
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This package does **not** bundle TA-Lib itself. You must install the native library separately.
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## How library loading works
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Call `talib.Load()` once before using any indicator function. The loader looks for the platform-specific library name:
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- macOS: `libta-lib.dylib`
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- Linux: `libta-lib.so`
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- Windows: `libta-lib.dll`
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Lookup order:
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1. `$TA_LIB_PATH/<library file>`
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2. `./<library file>`
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3. `/usr/local/lib/<library file>`
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4. `/usr/lib/<library file>`
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## Installing TA-Lib
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### macOS
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If you use Homebrew:
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```bash
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brew install ta-lib
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```
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If the library is installed outside the default lookup paths, set:
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```bash
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export TA_LIB_PATH=/path/to/lib
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```
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### Linux
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Install TA-Lib with your package manager if available, or build it from source and place the shared library in a standard library directory such as `/usr/local/lib`.
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### Windows
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Install the TA-Lib DLL and make sure `libta-lib.dll` is reachable through `TA_LIB_PATH` or from the current working directory.
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## Usage
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```go
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package main
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import (
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"fmt"
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"log"
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"math"
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"beejay.kim/lib/talib"
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)
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func main() {
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if _, err := talib.Load(); err != nil {
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log.Fatal(err)
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}
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var series []float64
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for i := 0; i < 100; i++ {
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series = append(series, math.Sin(float64(i)/7)*4.5+math.Cos(float64(i)/19)*1.75)
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}
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period := talib.HT_DCPERIOD(series)
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fmt.Println(period)
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sum := talib.ADD(series, series)
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fmt.Println(sum)
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}
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```
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## API notes
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- Indicator functions return `nil` when the underlying TA-Lib call fails.
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## Project status
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This is currently a focused wrapper around a limited subset of TA-Lib. Additional indicators can be added by registering more native functions in `Load()` and exposing Go wrappers for them.
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