feat: initial commit

src/error.rs

@@ -0,0 +1,40 @@
+use thiserror::Error;
+
+#[derive(Debug, Error)]
+pub enum Error {
+    #[error("Insufficient data: at least {required} data points required, but got {provided}")]
+    InsufficientData { required: usize, provided: usize },
+
+    #[error("Invalid data: {0}")]
+    InvalidData(String),
+
+    #[error("Fitting error: {0}")]
+    FittingError(String),
+
+    #[error("Fit quality check error: {0}")]
+    FitQualityError(String),
+
+    #[error("Invalid parameter: {0}")]
+    InvalidParameter(String),
+
+    #[error("Math error: {0}")]
+    MathError(String),
+
+    #[error("Invalid percentile: {0}. Must be between 0 and 1.")]
+    InvalidPercentile(f64),
+
+    #[error("Invalid confidence level: {0}. Must be between 0 and 1.")]
+    InvalidConfidenceLevel(f64),
+
+    #[error("Invalid shape: {0}. Must be between 0 and 1.")]
+    InvalidShape(f64),
+
+    #[error("Invalid parameters: min ({min}) must be less than max ({max}).")]
+    InvalidRange { min: f64, max: f64 },
+
+    #[error("Likely value ({likely}) must be between min ({min}) and max ({max}).")]
+    InvalidMode { min: f64, likely: f64, max: f64 },
+
+    #[error("statrs::StatsError: {0}.")]
+    StatsError(#[from] statrs::StatsError),
+}